CINXE.COM

<!DOCTYPE html> <html class="client-nojs vector-feature-language-in-header-enabled vector-feature-language-in-main-page-header-disabled vector-feature-sticky-header-disabled vector-feature-page-tools-pinned-disabled vector-feature-toc-pinned-clientpref-1 vector-feature-main-menu-pinned-disabled vector-feature-limited-width-clientpref-1 vector-feature-limited-width-content-enabled vector-feature-custom-font-size-clientpref-1 vector-feature-appearance-pinned-clientpref-1 vector-feature-night-mode-enabled skin-theme-clientpref-day vector-toc-available" lang="en" dir="ltr"> <head> <meta charset="UTF-8"> <title>Browser Helper Object - Wikipedia</title> <script>(function(){var className="client-js vector-feature-language-in-header-enabled vector-feature-language-in-main-page-header-disabled vector-feature-sticky-header-disabled vector-feature-page-tools-pinned-disabled vector-feature-toc-pinned-clientpref-1 vector-feature-main-menu-pinned-disabled vector-feature-limited-width-clientpref-1 vector-feature-limited-width-content-enabled vector-feature-custom-font-size-clientpref-1 vector-feature-appearance-pinned-clientpref-1 vector-feature-night-mode-enabled skin-theme-clientpref-day vector-toc-available";var cookie=document.cookie.match(/(?:^|; )enwikimwclientpreferences=([^;]+)/);if(cookie){cookie[1].split('%2C').forEach(function(pref){className=className.replace(new RegExp('(^| )'+pref.replace(/-clientpref-\w+$|[^\w-]+/g,'')+'-clientpref-\\w+( |$)'),'$1'+pref+'$2');});}document.documentElement.className=className;}());RLCONF={"wgBreakFrames":false,"wgSeparatorTransformTable":["",""],"wgDigitTransformTable":["",""],"wgDefaultDateFormat":"dmy", "wgMonthNames":["","January","February","March","April","May","June","July","August","September","October","November","December"],"wgRequestId":"f16d5c44-7b7b-4c86-b1d9-edb0613396e4","wgCanonicalNamespace":"","wgCanonicalSpecialPageName":false,"wgNamespaceNumber":0,"wgPageName":"Browser_Helper_Object","wgTitle":"Browser Helper Object","wgCurRevisionId":1223422626,"wgRevisionId":1223422626,"wgArticleId":910726,"wgIsArticle":true,"wgIsRedirect":false,"wgAction":"view","wgUserName":null,"wgUserGroups":["*"],"wgCategories":["Articles with short description","Short description is different from Wikidata","All articles with unsourced statements","Articles with unsourced statements from May 2021","Webarchive template wayback links","Internet Explorer"],"wgPageViewLanguage":"en","wgPageContentLanguage":"en","wgPageContentModel":"wikitext","wgRelevantPageName":"Browser_Helper_Object","wgRelevantArticleId":910726,"wgIsProbablyEditable":true,"wgRelevantPageIsProbablyEditable":true, "wgRestrictionEdit":[],"wgRestrictionMove":[],"wgNoticeProject":"wikipedia","wgCiteReferencePreviewsActive":false,"wgFlaggedRevsParams":{"tags":{"status":{"levels":1}}},"wgMediaViewerOnClick":true,"wgMediaViewerEnabledByDefault":true,"wgPopupsFlags":0,"wgVisualEditor":{"pageLanguageCode":"en","pageLanguageDir":"ltr","pageVariantFallbacks":"en"},"wgMFDisplayWikibaseDescriptions":{"search":true,"watchlist":true,"tagline":false,"nearby":true},"wgWMESchemaEditAttemptStepOversample":false,"wgWMEPageLength":8000,"wgRelatedArticlesCompat":[],"wgCentralAuthMobileDomain":false,"wgEditSubmitButtonLabelPublish":true,"wgULSPosition":"interlanguage","wgULSisCompactLinksEnabled":false,"wgVector2022LanguageInHeader":true,"wgULSisLanguageSelectorEmpty":false,"wgWikibaseItemId":"Q991335","wgCheckUserClientHintsHeadersJsApi":["brands","architecture","bitness","fullVersionList","mobile","model","platform","platformVersion"],"GEHomepageSuggestedEditsEnableTopics":true,"wgGETopicsMatchModeEnabled":false, "wgGEStructuredTaskRejectionReasonTextInputEnabled":false,"wgGELevelingUpEnabledForUser":false};RLSTATE={"ext.globalCssJs.user.styles":"ready","site.styles":"ready","user.styles":"ready","ext.globalCssJs.user":"ready","user":"ready","user.options":"loading","ext.cite.styles":"ready","skins.vector.search.codex.styles":"ready","skins.vector.styles":"ready","skins.vector.icons":"ready","jquery.makeCollapsible.styles":"ready","ext.wikimediamessages.styles":"ready","ext.visualEditor.desktopArticleTarget.noscript":"ready","ext.uls.interlanguage":"ready","wikibase.client.init":"ready","ext.wikimediaBadges":"ready"};RLPAGEMODULES=["ext.cite.ux-enhancements","mediawiki.page.media","site","mediawiki.page.ready","jquery.makeCollapsible","mediawiki.toc","skins.vector.js","ext.centralNotice.geoIP","ext.centralNotice.startUp","ext.gadget.ReferenceTooltips","ext.gadget.switcher","ext.urlShortener.toolbar","ext.centralauth.centralautologin","mmv.bootstrap","ext.popups", "ext.visualEditor.desktopArticleTarget.init","ext.visualEditor.targetLoader","ext.echo.centralauth","ext.eventLogging","ext.wikimediaEvents","ext.navigationTiming","ext.uls.interface","ext.cx.eventlogging.campaigns","ext.cx.uls.quick.actions","wikibase.client.vector-2022","ext.checkUser.clientHints","ext.growthExperiments.SuggestedEditSession","wikibase.sidebar.tracking"];</script> <script>(RLQ=window.RLQ||[]).push(function(){mw.loader.impl(function(){return["user.options@12s5i",function($,jQuery,require,module){mw.user.tokens.set({"patrolToken":"+\\","watchToken":"+\\","csrfToken":"+\\"}); }];});});</script> <link rel="stylesheet" href="/w/load.php?lang=en&modules=ext.cite.styles%7Cext.uls.interlanguage%7Cext.visualEditor.desktopArticleTarget.noscript%7Cext.wikimediaBadges%7Cext.wikimediamessages.styles%7Cjquery.makeCollapsible.styles%7Cskins.vector.icons%2Cstyles%7Cskins.vector.search.codex.styles%7Cwikibase.client.init&only=styles&skin=vector-2022"> <script async="" src="/w/load.php?lang=en&modules=startup&only=scripts&raw=1&skin=vector-2022"></script> <meta name="ResourceLoaderDynamicStyles" content=""> <link rel="stylesheet" href="/w/load.php?lang=en&modules=site.styles&only=styles&skin=vector-2022"> <meta name="generator" content="MediaWiki 1.44.0-wmf.4"> <meta name="referrer" content="origin"> <meta name="referrer" content="origin-when-cross-origin"> <meta name="robots" content="max-image-preview:standard"> <meta name="format-detection" content="telephone=no"> <meta property="og:image" content="https://upload.wikimedia.org/wikipedia/en/c/c7/Am_addon_manager.png"> <meta property="og:image:width" content="1200"> <meta property="og:image:height" content="1185"> <meta property="og:image" content="https://upload.wikimedia.org/wikipedia/en/c/c7/Am_addon_manager.png"> <meta property="og:image:width" content="800"> <meta property="og:image:height" content="790"> <meta property="og:image:width" content="640"> <meta property="og:image:height" content="632"> <meta name="viewport" content="width=1120"> <meta property="og:title" content="Browser Helper Object - Wikipedia"> <meta property="og:type" content="website"> <link rel="preconnect" href="//upload.wikimedia.org"> <link rel="alternate" media="only screen and (max-width: 640px)" href="//en.m.wikipedia.org/wiki/Browser_Helper_Object"> <link rel="alternate" type="application/x-wiki" title="Edit this page" href="/w/index.php?title=Browser_Helper_Object&action=edit"> <link rel="apple-touch-icon" href="/static/apple-touch/wikipedia.png"> <link rel="icon" href="/static/favicon/wikipedia.ico"> <link rel="search" type="application/opensearchdescription+xml" href="/w/rest.php/v1/search" title="Wikipedia (en)"> <link rel="EditURI" type="application/rsd+xml" href="//en.wikipedia.org/w/api.php?action=rsd"> <link rel="canonical" href="https://en.wikipedia.org/wiki/Browser_Helper_Object"> <link rel="license" href="https://creativecommons.org/licenses/by-sa/4.0/deed.en"> <link rel="alternate" type="application/atom+xml" title="Wikipedia Atom feed" href="/w/index.php?title=Special:RecentChanges&feed=atom"> <link rel="dns-prefetch" href="//meta.wikimedia.org" /> <link rel="dns-prefetch" href="//login.wikimedia.org"> </head> <body class="skin--responsive skin-vector skin-vector-search-vue mediawiki ltr sitedir-ltr mw-hide-empty-elt ns-0 ns-subject mw-editable page-Browser_Helper_Object rootpage-Browser_Helper_Object skin-vector-2022 action-view"><a class="mw-jump-link" href="#bodyContent">Jump to content</a> <div class="vector-header-container"> <header class="vector-header mw-header"> <div class="vector-header-start"> <nav class="vector-main-menu-landmark" aria-label="Site"> <div id="vector-main-menu-dropdown" class="vector-dropdown vector-main-menu-dropdown vector-button-flush-left vector-button-flush-right" > <input type="checkbox" id="vector-main-menu-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-main-menu-dropdown" class="vector-dropdown-checkbox " aria-label="Main menu" > <label id="vector-main-menu-dropdown-label" for="vector-main-menu-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-menu mw-ui-icon-wikimedia-menu"></span> <span class="vector-dropdown-label-text">Main menu</span> </label> <div class="vector-dropdown-content"> <div id="vector-main-menu-unpinned-container" class="vector-unpinned-container"> <div id="vector-main-menu" class="vector-main-menu vector-pinnable-element"> <div class="vector-pinnable-header vector-main-menu-pinnable-header vector-pinnable-header-unpinned" data-feature-name="main-menu-pinned" data-pinnable-element-id="vector-main-menu" data-pinned-container-id="vector-main-menu-pinned-container" data-unpinned-container-id="vector-main-menu-unpinned-container" > <div class="vector-pinnable-header-label">Main menu</div> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-main-menu.pin">move to sidebar</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-main-menu.unpin">hide</button> </div> <div id="p-navigation" class="vector-menu mw-portlet mw-portlet-navigation" > <div class="vector-menu-heading"> Navigation </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="n-mainpage-description" class="mw-list-item"><a href="/wiki/Main_Page" title="Visit the main page [z]" accesskey="z"><span>Main page</span></a></li><li id="n-contents" class="mw-list-item"><a href="/wiki/Wikipedia:Contents" title="Guides to browsing Wikipedia"><span>Contents</span></a></li><li id="n-currentevents" class="mw-list-item"><a href="/wiki/Portal:Current_events" title="Articles related to current events"><span>Current events</span></a></li><li id="n-randompage" class="mw-list-item"><a href="/wiki/Special:Random" title="Visit a randomly selected article [x]" accesskey="x"><span>Random article</span></a></li><li id="n-aboutsite" class="mw-list-item"><a href="/wiki/Wikipedia:About" title="Learn about Wikipedia and how it works"><span>About Wikipedia</span></a></li><li id="n-contactpage" class="mw-list-item"><a href="//en.wikipedia.org/wiki/Wikipedia:Contact_us" title="How to contact Wikipedia"><span>Contact us</span></a></li> </ul> </div> </div> <div id="p-interaction" class="vector-menu mw-portlet mw-portlet-interaction" > <div class="vector-menu-heading"> Contribute </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="n-help" class="mw-list-item"><a href="/wiki/Help:Contents" title="Guidance on how to use and edit Wikipedia"><span>Help</span></a></li><li id="n-introduction" class="mw-list-item"><a href="/wiki/Help:Introduction" title="Learn how to edit Wikipedia"><span>Learn to edit</span></a></li><li id="n-portal" class="mw-list-item"><a href="/wiki/Wikipedia:Community_portal" title="The hub for editors"><span>Community portal</span></a></li><li id="n-recentchanges" class="mw-list-item"><a href="/wiki/Special:RecentChanges" title="A list of recent changes to Wikipedia [r]" accesskey="r"><span>Recent changes</span></a></li><li id="n-upload" class="mw-list-item"><a href="/wiki/Wikipedia:File_upload_wizard" title="Add images or other media for use on Wikipedia"><span>Upload file</span></a></li> </ul> </div> </div> </div> </div> </div> </div> </nav> <a href="/wiki/Main_Page" class="mw-logo"> <img class="mw-logo-icon" src="/static/images/icons/wikipedia.png" alt="" aria-hidden="true" height="50" width="50"> <span class="mw-logo-container skin-invert"> <img class="mw-logo-wordmark" alt="Wikipedia" src="/static/images/mobile/copyright/wikipedia-wordmark-en.svg" style="width: 7.5em; height: 1.125em;"> <img class="mw-logo-tagline" alt="The Free Encyclopedia" src="/static/images/mobile/copyright/wikipedia-tagline-en.svg" width="117" height="13" style="width: 7.3125em; height: 0.8125em;"> </span> </a> </div> <div class="vector-header-end"> <div id="p-search" role="search" class="vector-search-box-vue vector-search-box-collapses vector-search-box-show-thumbnail vector-search-box-auto-expand-width vector-search-box"> <a href="/wiki/Special:Search" class="cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only search-toggle" title="Search Wikipedia [f]" accesskey="f"><span class="vector-icon mw-ui-icon-search mw-ui-icon-wikimedia-search"></span> <span>Search</span> </a> <div class="vector-typeahead-search-container"> <div class="cdx-typeahead-search cdx-typeahead-search--show-thumbnail cdx-typeahead-search--auto-expand-width"> <form action="/w/index.php" id="searchform" class="cdx-search-input cdx-search-input--has-end-button"> <div id="simpleSearch" class="cdx-search-input__input-wrapper" data-search-loc="header-moved"> <div class="cdx-text-input cdx-text-input--has-start-icon"> <input class="cdx-text-input__input" type="search" name="search" placeholder="Search Wikipedia" aria-label="Search Wikipedia" autocapitalize="sentences" title="Search Wikipedia [f]" accesskey="f" id="searchInput" > <span class="cdx-text-input__icon cdx-text-input__start-icon"></span> </div> <input type="hidden" name="title" value="Special:Search"> </div> <button class="cdx-button cdx-search-input__end-button">Search</button> </form> </div> </div> </div> <nav class="vector-user-links vector-user-links-wide" aria-label="Personal tools"> <div class="vector-user-links-main"> <div id="p-vector-user-menu-preferences" class="vector-menu mw-portlet emptyPortlet" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> </ul> </div> </div> <div id="p-vector-user-menu-userpage" class="vector-menu mw-portlet emptyPortlet" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> </ul> </div> </div> <nav class="vector-appearance-landmark" aria-label="Appearance"> <div id="vector-appearance-dropdown" class="vector-dropdown " title="Change the appearance of the page's font size, width, and color" > <input type="checkbox" id="vector-appearance-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-appearance-dropdown" class="vector-dropdown-checkbox " aria-label="Appearance" > <label id="vector-appearance-dropdown-label" for="vector-appearance-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-appearance mw-ui-icon-wikimedia-appearance"></span> <span class="vector-dropdown-label-text">Appearance</span> </label> <div class="vector-dropdown-content"> <div id="vector-appearance-unpinned-container" class="vector-unpinned-container"> </div> </div> </div> </nav> <div id="p-vector-user-menu-notifications" class="vector-menu mw-portlet emptyPortlet" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> </ul> </div> </div> <div id="p-vector-user-menu-overflow" class="vector-menu mw-portlet" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="pt-sitesupport-2" class="user-links-collapsible-item mw-list-item user-links-collapsible-item"><a data-mw="interface" href="https://donate.wikimedia.org/wiki/Special:FundraiserRedirector?utm_source=donate&utm_medium=sidebar&utm_campaign=C13_en.wikipedia.org&uselang=en" class=""><span>Donate</span></a> </li> <li id="pt-createaccount-2" class="user-links-collapsible-item mw-list-item user-links-collapsible-item"><a data-mw="interface" href="/w/index.php?title=Special:CreateAccount&returnto=Browser+Helper+Object" title="You are encouraged to create an account and log in; however, it is not mandatory" class=""><span>Create account</span></a> </li> <li id="pt-login-2" class="user-links-collapsible-item mw-list-item user-links-collapsible-item"><a data-mw="interface" href="/w/index.php?title=Special:UserLogin&returnto=Browser+Helper+Object" title="You're encouraged to log in; however, it's not mandatory. [o]" accesskey="o" class=""><span>Log in</span></a> </li> </ul> </div> </div> </div> <div id="vector-user-links-dropdown" class="vector-dropdown vector-user-menu vector-button-flush-right vector-user-menu-logged-out" title="Log in and more options" > <input type="checkbox" id="vector-user-links-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-user-links-dropdown" class="vector-dropdown-checkbox " aria-label="Personal tools" > <label id="vector-user-links-dropdown-label" for="vector-user-links-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-ellipsis mw-ui-icon-wikimedia-ellipsis"></span> <span class="vector-dropdown-label-text">Personal tools</span> </label> <div class="vector-dropdown-content"> <div id="p-personal" class="vector-menu mw-portlet mw-portlet-personal user-links-collapsible-item" title="User menu" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="pt-sitesupport" class="user-links-collapsible-item mw-list-item"><a href="https://donate.wikimedia.org/wiki/Special:FundraiserRedirector?utm_source=donate&utm_medium=sidebar&utm_campaign=C13_en.wikipedia.org&uselang=en"><span>Donate</span></a></li><li id="pt-createaccount" class="user-links-collapsible-item mw-list-item"><a href="/w/index.php?title=Special:CreateAccount&returnto=Browser+Helper+Object" title="You are encouraged to create an account and log in; however, it is not mandatory"><span class="vector-icon mw-ui-icon-userAdd mw-ui-icon-wikimedia-userAdd"></span> <span>Create account</span></a></li><li id="pt-login" class="user-links-collapsible-item mw-list-item"><a href="/w/index.php?title=Special:UserLogin&returnto=Browser+Helper+Object" title="You're encouraged to log in; however, it's not mandatory. [o]" accesskey="o"><span class="vector-icon mw-ui-icon-logIn mw-ui-icon-wikimedia-logIn"></span> <span>Log in</span></a></li> </ul> </div> </div> <div id="p-user-menu-anon-editor" class="vector-menu mw-portlet mw-portlet-user-menu-anon-editor" > <div class="vector-menu-heading"> Pages for logged out editors <a href="/wiki/Help:Introduction" aria-label="Learn more about editing"><span>learn more</span></a> </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="pt-anoncontribs" class="mw-list-item"><a href="/wiki/Special:MyContributions" title="A list of edits made from this IP address [y]" accesskey="y"><span>Contributions</span></a></li><li id="pt-anontalk" class="mw-list-item"><a href="/wiki/Special:MyTalk" title="Discussion about edits from this IP address [n]" accesskey="n"><span>Talk</span></a></li> </ul> </div> </div> </div> </div> </nav> </div> </header> </div> <div class="mw-page-container"> <div class="mw-page-container-inner"> <div class="vector-sitenotice-container"> <div id="siteNotice"></div> </div> <div class="vector-column-start"> <div class="vector-main-menu-container"> <div id="mw-navigation"> <nav id="mw-panel" class="vector-main-menu-landmark" aria-label="Site"> <div id="vector-main-menu-pinned-container" class="vector-pinned-container"> </div> </nav> </div> </div> <div class="vector-sticky-pinned-container"> <nav id="mw-panel-toc" aria-label="Contents" data-event-name="ui.sidebar-toc" class="mw-table-of-contents-container vector-toc-landmark"> <div id="vector-toc-pinned-container" class="vector-pinned-container"> <div id="vector-toc" class="vector-toc vector-pinnable-element"> <div class="vector-pinnable-header vector-toc-pinnable-header vector-pinnable-header-pinned" data-feature-name="toc-pinned" data-pinnable-element-id="vector-toc" > <h2 class="vector-pinnable-header-label">Contents</h2> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-toc.pin">move to sidebar</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-toc.unpin">hide</button> </div> <ul class="vector-toc-contents" id="mw-panel-toc-list"> <li id="toc-mw-content-text" class="vector-toc-list-item vector-toc-level-1"> <a href="#" class="vector-toc-link"> <div class="vector-toc-text">(Top)</div> </a> </li> <li id="toc-Implementation" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Implementation"> <div class="vector-toc-text"> <span class="vector-toc-numb">1</span> <span>Implementation</span> </div> </a> <ul id="toc-Implementation-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Examples" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Examples"> <div class="vector-toc-text"> <span class="vector-toc-numb">2</span> <span>Examples</span> </div> </a> <ul id="toc-Examples-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Concerns" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Concerns"> <div class="vector-toc-text"> <span class="vector-toc-numb">3</span> <span>Concerns</span> </div> </a> <ul id="toc-Concerns-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-See_also" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#See_also"> <div class="vector-toc-text"> <span class="vector-toc-numb">4</span> <span>See also</span> </div> </a> <ul id="toc-See_also-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-References" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#References"> <div class="vector-toc-text"> <span class="vector-toc-numb">5</span> <span>References</span> </div> </a> <ul id="toc-References-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-External_links" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#External_links"> <div class="vector-toc-text"> <span class="vector-toc-numb">6</span> <span>External links</span> </div> </a> <button aria-controls="toc-External_links-sublist" class="cdx-button cdx-button--weight-quiet cdx-button--icon-only vector-toc-toggle"> <span class="vector-icon mw-ui-icon-wikimedia-expand"></span> <span>Toggle External links subsection</span> </button> <ul id="toc-External_links-sublist" class="vector-toc-list"> <li id="toc-Microsoft_sites" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Microsoft_sites"> <div class="vector-toc-text"> <span class="vector-toc-numb">6.1</span> <span>Microsoft sites</span> </div> </a> <ul id="toc-Microsoft_sites-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Listings_and_examples" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Listings_and_examples"> <div class="vector-toc-text"> <span class="vector-toc-numb">6.2</span> <span>Listings and examples</span> </div> </a> <ul id="toc-Listings_and_examples-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> </ul> </div> </div> </nav> </div> </div> <div class="mw-content-container"> <main id="content" class="mw-body"> <header class="mw-body-header vector-page-titlebar"> <nav aria-label="Contents" class="vector-toc-landmark"> <div id="vector-page-titlebar-toc" class="vector-dropdown vector-page-titlebar-toc vector-button-flush-left" > <input type="checkbox" id="vector-page-titlebar-toc-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-page-titlebar-toc" class="vector-dropdown-checkbox " aria-label="Toggle the table of contents" > <label id="vector-page-titlebar-toc-label" for="vector-page-titlebar-toc-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-listBullet mw-ui-icon-wikimedia-listBullet"></span> <span class="vector-dropdown-label-text">Toggle the table of contents</span> </label> <div class="vector-dropdown-content"> <div id="vector-page-titlebar-toc-unpinned-container" class="vector-unpinned-container"> </div> </div> </div> </nav> <h1 id="firstHeading" class="firstHeading mw-first-heading"><span class="mw-page-title-main">Browser Helper Object</span></h1> <div id="p-lang-btn" class="vector-dropdown mw-portlet mw-portlet-lang" > <input type="checkbox" id="p-lang-btn-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-p-lang-btn" class="vector-dropdown-checkbox mw-interlanguage-selector" aria-label="Go to an article in another language. Available in 9 languages" > <label id="p-lang-btn-label" for="p-lang-btn-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--action-progressive mw-portlet-lang-heading-9" aria-hidden="true" ><span class="vector-icon mw-ui-icon-language-progressive mw-ui-icon-wikimedia-language-progressive"></span> <span class="vector-dropdown-label-text">9 languages</span> </label> <div class="vector-dropdown-content"> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="interlanguage-link interwiki-da mw-list-item"><a href="https://da.wikipedia.org/wiki/Browser_Helper_Object" title="Browser Helper Object – Danish" lang="da" hreflang="da" data-title="Browser Helper Object" data-language-autonym="Dansk" data-language-local-name="Danish" class="interlanguage-link-target"><span>Dansk</span></a></li><li class="interlanguage-link interwiki-de mw-list-item"><a href="https://de.wikipedia.org/wiki/Browser_Helper_Object" title="Browser Helper Object – German" lang="de" hreflang="de" data-title="Browser Helper Object" data-language-autonym="Deutsch" data-language-local-name="German" class="interlanguage-link-target"><span>Deutsch</span></a></li><li class="interlanguage-link interwiki-es mw-list-item"><a href="https://es.wikipedia.org/wiki/Browser_Helper_Object" title="Browser Helper Object – Spanish" lang="es" hreflang="es" data-title="Browser Helper Object" data-language-autonym="Español" data-language-local-name="Spanish" class="interlanguage-link-target"><span>Español</span></a></li><li class="interlanguage-link interwiki-ko mw-list-item"><a href="https://ko.wikipedia.org/wiki/%EB%B8%8C%EB%9D%BC%EC%9A%B0%EC%A0%80_%EB%8F%84%EC%9A%B0%EB%AF%B8_%EA%B0%9D%EC%B2%B4" title="브라우저 도우미 객체 – Korean" lang="ko" hreflang="ko" data-title="브라우저 도우미 객체" data-language-autonym="한국어" data-language-local-name="Korean" class="interlanguage-link-target"><span>한국어</span></a></li><li class="interlanguage-link interwiki-it mw-list-item"><a href="https://it.wikipedia.org/wiki/Browser_Helper_Object" title="Browser Helper Object – Italian" lang="it" hreflang="it" data-title="Browser Helper Object" data-language-autonym="Italiano" data-language-local-name="Italian" class="interlanguage-link-target"><span>Italiano</span></a></li><li class="interlanguage-link interwiki-ml mw-list-item"><a href="https://ml.wikipedia.org/wiki/%E0%B4%AC%E0%B5%8D%E0%B4%B0%E0%B5%97%E0%B4%B8%E0%B5%BC_%E0%B4%B9%E0%B5%86%E0%B5%BD%E0%B4%AA%E0%B5%8D%E0%B4%AA%E0%B5%BC_%E0%B4%92%E0%B4%AC%E0%B5%8D%E2%80%8D%E0%B4%9C%E0%B4%95%E0%B5%8D%E0%B4%9F%E0%B5%8D" title="ബ്രൗസർ ഹെൽപ്പർ ഒബ്‍ജക്ട് – Malayalam" lang="ml" hreflang="ml" data-title="ബ്രൗസർ ഹെൽപ്പർ ഒബ്‍ജക്ട്" data-language-autonym="മലയാളം" data-language-local-name="Malayalam" class="interlanguage-link-target"><span>മലയാളം</span></a></li><li class="interlanguage-link interwiki-ja mw-list-item"><a href="https://ja.wikipedia.org/wiki/Browser_Helper_Object" title="Browser Helper Object – Japanese" lang="ja" hreflang="ja" data-title="Browser Helper Object" data-language-autonym="日本語" data-language-local-name="Japanese" class="interlanguage-link-target"><span>日本語</span></a></li><li class="interlanguage-link interwiki-ru mw-list-item"><a href="https://ru.wikipedia.org/wiki/Browser_Helper_Object" title="Browser Helper Object – Russian" lang="ru" hreflang="ru" data-title="Browser Helper Object" data-language-autonym="Русский" data-language-local-name="Russian" class="interlanguage-link-target"><span>Русский</span></a></li><li class="interlanguage-link interwiki-zh mw-list-item"><a href="https://zh.wikipedia.org/wiki/%E6%B5%8F%E8%A7%88%E5%99%A8%E8%BE%85%E5%8A%A9%E5%AF%B9%E8%B1%A1" title="浏览器辅助对象 – Chinese" lang="zh" hreflang="zh" data-title="浏览器辅助对象" data-language-autonym="中文" data-language-local-name="Chinese" class="interlanguage-link-target"><span>中文</span></a></li> </ul> <div class="after-portlet after-portlet-lang"><span class="wb-langlinks-edit wb-langlinks-link"><a href="https://www.wikidata.org/wiki/Special:EntityPage/Q991335#sitelinks-wikipedia" title="Edit interlanguage links" class="wbc-editpage">Edit links</a></span></div> </div> </div> </div> </header> <div class="vector-page-toolbar"> <div class="vector-page-toolbar-container"> <div id="left-navigation"> <nav aria-label="Namespaces"> <div id="p-associated-pages" class="vector-menu vector-menu-tabs mw-portlet mw-portlet-associated-pages" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="ca-nstab-main" class="selected vector-tab-noicon mw-list-item"><a href="/wiki/Browser_Helper_Object" title="View the content page [c]" accesskey="c"><span>Article</span></a></li><li id="ca-talk" class="vector-tab-noicon mw-list-item"><a href="/wiki/Talk:Browser_Helper_Object" rel="discussion" title="Discuss improvements to the content page [t]" accesskey="t"><span>Talk</span></a></li> </ul> </div> </div> <div id="vector-variants-dropdown" class="vector-dropdown emptyPortlet" > <input type="checkbox" id="vector-variants-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-variants-dropdown" class="vector-dropdown-checkbox " aria-label="Change language variant" > <label id="vector-variants-dropdown-label" for="vector-variants-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet" aria-hidden="true" ><span class="vector-dropdown-label-text">English</span> </label> <div class="vector-dropdown-content"> <div id="p-variants" class="vector-menu mw-portlet mw-portlet-variants emptyPortlet" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> </ul> </div> </div> </div> </div> </nav> </div> <div id="right-navigation" class="vector-collapsible"> <nav aria-label="Views"> <div id="p-views" class="vector-menu vector-menu-tabs mw-portlet mw-portlet-views" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="ca-view" class="selected vector-tab-noicon mw-list-item"><a href="/wiki/Browser_Helper_Object"><span>Read</span></a></li><li id="ca-edit" class="vector-tab-noicon mw-list-item"><a href="/w/index.php?title=Browser_Helper_Object&action=edit" title="Edit this page [e]" accesskey="e"><span>Edit</span></a></li><li id="ca-history" class="vector-tab-noicon mw-list-item"><a href="/w/index.php?title=Browser_Helper_Object&action=history" title="Past revisions of this page [h]" accesskey="h"><span>View history</span></a></li> </ul> </div> </div> </nav> <nav class="vector-page-tools-landmark" aria-label="Page tools"> <div id="vector-page-tools-dropdown" class="vector-dropdown vector-page-tools-dropdown" > <input type="checkbox" id="vector-page-tools-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-page-tools-dropdown" class="vector-dropdown-checkbox " aria-label="Tools" > <label id="vector-page-tools-dropdown-label" for="vector-page-tools-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet" aria-hidden="true" ><span class="vector-dropdown-label-text">Tools</span> </label> <div class="vector-dropdown-content"> <div id="vector-page-tools-unpinned-container" class="vector-unpinned-container"> <div id="vector-page-tools" class="vector-page-tools vector-pinnable-element"> <div class="vector-pinnable-header vector-page-tools-pinnable-header vector-pinnable-header-unpinned" data-feature-name="page-tools-pinned" data-pinnable-element-id="vector-page-tools" data-pinned-container-id="vector-page-tools-pinned-container" data-unpinned-container-id="vector-page-tools-unpinned-container" > <div class="vector-pinnable-header-label">Tools</div> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-page-tools.pin">move to sidebar</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-page-tools.unpin">hide</button> </div> <div id="p-cactions" class="vector-menu mw-portlet mw-portlet-cactions emptyPortlet vector-has-collapsible-items" title="More options" > <div class="vector-menu-heading"> Actions </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="ca-more-view" class="selected vector-more-collapsible-item mw-list-item"><a href="/wiki/Browser_Helper_Object"><span>Read</span></a></li><li id="ca-more-edit" class="vector-more-collapsible-item mw-list-item"><a href="/w/index.php?title=Browser_Helper_Object&action=edit" title="Edit this page [e]" accesskey="e"><span>Edit</span></a></li><li id="ca-more-history" class="vector-more-collapsible-item mw-list-item"><a href="/w/index.php?title=Browser_Helper_Object&action=history"><span>View history</span></a></li> </ul> </div> </div> <div id="p-tb" class="vector-menu mw-portlet mw-portlet-tb" > <div class="vector-menu-heading"> General </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="t-whatlinkshere" class="mw-list-item"><a href="/wiki/Special:WhatLinksHere/Browser_Helper_Object" title="List of all English Wikipedia pages containing links to this page [j]" accesskey="j"><span>What links here</span></a></li><li id="t-recentchangeslinked" class="mw-list-item"><a href="/wiki/Special:RecentChangesLinked/Browser_Helper_Object" rel="nofollow" title="Recent changes in pages linked from this page [k]" accesskey="k"><span>Related changes</span></a></li><li id="t-upload" class="mw-list-item"><a href="/wiki/Wikipedia:File_Upload_Wizard" title="Upload files [u]" accesskey="u"><span>Upload file</span></a></li><li id="t-specialpages" class="mw-list-item"><a href="/wiki/Special:SpecialPages" title="A list of all special pages [q]" accesskey="q"><span>Special pages</span></a></li><li id="t-permalink" class="mw-list-item"><a href="/w/index.php?title=Browser_Helper_Object&oldid=1223422626" title="Permanent link to this revision of this page"><span>Permanent link</span></a></li><li id="t-info" class="mw-list-item"><a href="/w/index.php?title=Browser_Helper_Object&action=info" title="More information about this page"><span>Page information</span></a></li><li id="t-cite" class="mw-list-item"><a href="/w/index.php?title=Special:CiteThisPage&page=Browser_Helper_Object&id=1223422626&wpFormIdentifier=titleform" title="Information on how to cite this page"><span>Cite this page</span></a></li><li id="t-urlshortener" class="mw-list-item"><a href="/w/index.php?title=Special:UrlShortener&url=https%3A%2F%2Fen.wikipedia.org%2Fwiki%2FBrowser_Helper_Object"><span>Get shortened URL</span></a></li><li id="t-urlshortener-qrcode" class="mw-list-item"><a href="/w/index.php?title=Special:QrCode&url=https%3A%2F%2Fen.wikipedia.org%2Fwiki%2FBrowser_Helper_Object"><span>Download QR code</span></a></li> </ul> </div> </div> <div id="p-coll-print_export" class="vector-menu mw-portlet mw-portlet-coll-print_export" > <div class="vector-menu-heading"> Print/export </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="coll-download-as-rl" class="mw-list-item"><a href="/w/index.php?title=Special:DownloadAsPdf&page=Browser_Helper_Object&action=show-download-screen" title="Download this page as a PDF file"><span>Download as PDF</span></a></li><li id="t-print" class="mw-list-item"><a href="/w/index.php?title=Browser_Helper_Object&printable=yes" title="Printable version of this page [p]" accesskey="p"><span>Printable version</span></a></li> </ul> </div> </div> <div id="p-wikibase-otherprojects" class="vector-menu mw-portlet mw-portlet-wikibase-otherprojects" > <div class="vector-menu-heading"> In other projects </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="t-wikibase" class="wb-otherproject-link wb-otherproject-wikibase-dataitem mw-list-item"><a href="https://www.wikidata.org/wiki/Special:EntityPage/Q991335" title="Structured data on this page hosted by Wikidata [g]" accesskey="g"><span>Wikidata item</span></a></li> </ul> </div> </div> </div> </div> </div> </div> </nav> </div> </div> </div> <div class="vector-column-end"> <div class="vector-sticky-pinned-container"> <nav class="vector-page-tools-landmark" aria-label="Page tools"> <div id="vector-page-tools-pinned-container" class="vector-pinned-container"> </div> </nav> <nav class="vector-appearance-landmark" aria-label="Appearance"> <div id="vector-appearance-pinned-container" class="vector-pinned-container"> <div id="vector-appearance" class="vector-appearance vector-pinnable-element"> <div class="vector-pinnable-header vector-appearance-pinnable-header vector-pinnable-header-pinned" data-feature-name="appearance-pinned" data-pinnable-element-id="vector-appearance" data-pinned-container-id="vector-appearance-pinned-container" data-unpinned-container-id="vector-appearance-unpinned-container" > <div class="vector-pinnable-header-label">Appearance</div> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-appearance.pin">move to sidebar</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-appearance.unpin">hide</button> </div> </div> </div> </nav> </div> </div> <div id="bodyContent" class="vector-body" aria-labelledby="firstHeading" data-mw-ve-target-container> <div class="vector-body-before-content"> <div class="mw-indicators"> </div> <div id="siteSub" class="noprint">From Wikipedia, the free encyclopedia</div> </div> <div id="contentSub"><div id="mw-content-subtitle"></div></div> <div id="mw-content-text" class="mw-body-content"><div class="mw-content-ltr mw-parser-output" lang="en" dir="ltr"><div class="shortdescription nomobile noexcerpt noprint searchaux" style="display:none">Plug-in module for Internet Explorer</div> <figure class="mw-default-size mw-halign-right" typeof="mw:File/Thumb"><a href="/wiki/File:Am_addon_manager.png" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/en/thumb/c/c7/Am_addon_manager.png/220px-Am_addon_manager.png" decoding="async" width="220" height="217" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/c/c7/Am_addon_manager.png/330px-Am_addon_manager.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/c/c7/Am_addon_manager.png/440px-Am_addon_manager.png 2x" data-file-width="566" data-file-height="559" /></a><figcaption>Add-on Manager from <a href="/wiki/Windows_XP" title="Windows XP">Windows XP</a> SP2 Internet Explorer</figcaption></figure> <p>A <b>Browser Helper Object</b> (<b>BHO</b>) is a <a href="/wiki/Library_(computer_science)" class="mw-redirect" title="Library (computer science)">DLL</a> <a href="/wiki/Module_(programming)" class="mw-redirect" title="Module (programming)">module</a> designed as a <a href="/wiki/Plug-in_(computing)" title="Plug-in (computing)">plugin</a> for the <a href="/wiki/Microsoft" title="Microsoft">Microsoft</a> <a href="/wiki/Internet_Explorer" title="Internet Explorer">Internet Explorer</a> <a href="/wiki/Web_browser" title="Web browser">web browser</a> to provide added functionality. BHOs were introduced in October 1997 with the release of <a href="/wiki/Internet_Explorer_4" title="Internet Explorer 4">version 4</a> of Internet Explorer. Most BHOs are loaded once by each new instance of Internet Explorer. However, in the case of <a href="/wiki/Windows_Explorer" class="mw-redirect" title="Windows Explorer">Windows Explorer</a>, a new instance is launched for each window. </p><p>BHOs are still supported as of Windows 10, through <a href="/wiki/Internet_Explorer_11" title="Internet Explorer 11">Internet Explorer 11</a>, while BHOs are not supported in <a href="/wiki/Microsoft_Edge" title="Microsoft Edge">Microsoft Edge</a>. </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="Implementation">Implementation</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Browser_Helper_Object&action=edit&section=1" title="Edit section: Implementation"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Each time a new instance of Internet Explorer starts, it checks the <a href="/wiki/Windows_Registry" title="Windows Registry">Windows Registry</a> for the key <i>HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects</i>. If Internet Explorer finds this key in the registry, it looks for a <a href="/wiki/Universally_unique_identifier#In_COM" title="Universally unique identifier">CLSID</a> key listed below the key. The CLSID keys under Browser Helper Objects tell the browser which BHOs to load. Removing the registry key prevents the BHO from being loaded. For each CLSID that is listed below the BHO key, Internet Explorer calls CoCreateInstance to start the instance of the BHO in the same process space as the browser. If the BHO is started and implements the IObjectWithSite interface, it can control and receive events from Internet Explorer. BHOs can be created in any language that supports <a href="/wiki/Component_Object_Model" title="Component Object Model">COM</a>.<sup id="cite_ref-1" class="reference"><a href="#cite_note-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="Examples">Examples</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Browser_Helper_Object&action=edit&section=2" title="Edit section: Examples"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Some modules enable the display of different file formats not ordinarily interpretable by the browser. The <a href="/wiki/Adobe_Acrobat" title="Adobe Acrobat">Adobe Acrobat</a> plug-in that allows Internet Explorer users to read <a href="/wiki/Portable_Document_Format" class="mw-redirect" title="Portable Document Format">PDF</a> files within their browser is a BHO. </p><p>Other modules add toolbars to Internet Explorer, such as the <a href="/wiki/Alexa_Toolbar" class="mw-redirect" title="Alexa Toolbar">Alexa Toolbar</a> that provides a list of web sites related to the one you are currently browsing, or the <a href="/wiki/Google_Toolbar" title="Google Toolbar">Google Toolbar</a> that adds a toolbar with a Google search box to the browser <a href="/wiki/User_interface" title="User interface">user interface</a>. </p><p>The Conduit toolbars are based on a BHO that can be used on <a href="/wiki/Internet_Explorer_7" title="Internet Explorer 7">Internet Explorer 7</a> and up. This BHO provides a search facility that connects to <a href="/wiki/Microsoft" title="Microsoft">Microsoft</a>'s <a href="/wiki/Bing_(search_engine)" class="mw-redirect" title="Bing (search engine)">Bing</a> search. </p> <div class="mw-heading mw-heading2"><h2 id="Concerns">Concerns</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Browser_Helper_Object&action=edit&section=3" title="Edit section: Concerns"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>The BHO <a href="/wiki/Application_programming_interface" class="mw-redirect" title="Application programming interface">API</a> exposes <a href="/wiki/Hooking" title="Hooking">hooks</a> that allow the BHO to access the <a href="/wiki/Document_Object_Model" title="Document Object Model">Document Object Model</a> (DOM) of the current page and to control navigation. Because BHOs have unrestricted access to the Internet Explorer event model, some forms of <a href="/wiki/Malware" title="Malware">malware</a> (such as adware and spyware) have also been created as BHOs.<sup id="cite_ref-2" class="reference"><a href="#cite_note-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-3" class="reference"><a href="#cite_note-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup> </p><p>For example, the <a href="/wiki/Download.ject" title="Download.ject">Download.ject</a> malware is a BHO that is activated when a secure <a href="/wiki/HTTP" title="HTTP">HTTP</a> connection is made to a financial institution, then begins to <a href="/wiki/Keystroke_logging" title="Keystroke logging">record keystrokes</a> for the purpose of capturing user passwords. The <a href="/wiki/MyWay_Searchbar" class="mw-redirect" title="MyWay Searchbar">MyWay Searchbar</a> tracks users' browsing patterns and passes the information it records to third parties. The <a href="/wiki/C2.LOP" class="mw-redirect" title="C2.LOP">C2.LOP</a> malware adds links and popups of its own to web pages in order to drive users to <a href="/wiki/Pay-per-click" title="Pay-per-click">pay-per-click</a> websites.<sup class="noprint Inline-Template Template-Fact" style="white-space:nowrap;">[<i><a href="/wiki/Wikipedia:Citation_needed" title="Wikipedia:Citation needed"><span title="This claim needs references to reliable sources. (May 2021)">citation needed</span></a></i>]</sup> </p><p>Many BHOs introduce visible changes to a browser's interface, such as installing toolbars in <a href="/wiki/Internet_Explorer" title="Internet Explorer">Internet Explorer</a> and the like, but others run without any change to the interface. This renders it easy for malicious coders to conceal the actions of their browser add-on, especially since, after being installed, the BHO seldom requires permission before performing further actions. For instance, variants of the ClSpring trojan use BHOs to install scripts to provide a number of instructions to be performed such as adding and deleting registry values and downloading additional executable files, all completely transparently to the user.<sup id="cite_ref-4" class="reference"><a href="#cite_note-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup> </p><p>In response to the problems associated with BHOs and similar extensions to Internet Explorer, Microsoft debuted an <i>Add-on Manager</i> in <a href="/wiki/Internet_Explorer_6" title="Internet Explorer 6">Internet Explorer 6</a> with the release of <a href="/wiki/Windows_XP#Service_Pack_2" title="Windows XP">Service Pack 2</a> for <a href="/wiki/Windows_XP" title="Windows XP">Windows XP</a> (updating it to IE6 Security Version 1, a.k.a. SP2). This utility displays a list of all installed BHOs, <a href="/wiki/Browser_extension" title="Browser extension">browser extensions</a> and <a href="/wiki/ActiveX_control" class="mw-redirect" title="ActiveX control">ActiveX controls</a>, and allows the user to enable or disable them at will. There are also free tools (such as BHODemon) that list installed BHOs and allow the user to disable malicious extensions. <a href="/wiki/Spybot_%E2%80%93_Search_%26_Destroy" title="Spybot – Search & Destroy">Spybot S&D</a> advanced mode has a similar tool built in to allow the user to disable installed BHO. </p> <div class="mw-heading mw-heading2"><h2 id="See_also">See also</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Browser_Helper_Object&action=edit&section=4" title="Edit section: See also"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a href="/wiki/Browser_extension" title="Browser extension">Browser extension</a></li> <li><a href="/wiki/Plug-in_(computing)" title="Plug-in (computing)">Plug-in (computing)</a></li> <li><a href="/wiki/HTML_Components" title="HTML Components">HTML Components</a></li> <li><a href="/wiki/Add-on_(Mozilla)" title="Add-on (Mozilla)">Add-on (Mozilla)</a></li> <li><a href="/wiki/Google_Chrome_Extensions" class="mw-redirect" title="Google Chrome Extensions">Google Chrome Extensions</a></li></ul> <div class="mw-heading mw-heading2"><h2 id="References">References</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Browser_Helper_Object&action=edit&section=5" title="Edit section: References"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <div class="mw-references-wrap"><ol class="references"> <li id="cite_note-1"><span class="mw-cite-backlink"><b><a href="#cite_ref-1">^</a></b></span> <span class="reference-text">Roberts Scott, <i>Programming Microsoft Internet Explorer 5</i>, Microsoft Press, 1999, <style data-mw-deduplicate="TemplateStyles:r1238218222">.mw-parser-output cite.citation{font-style:inherit;word-wrap:break-word}.mw-parser-output .citation q{quotes:"\"""\"""'""'"}.mw-parser-output .citation:target{background-color:rgba(0,127,255,0.133)}.mw-parser-output .id-lock-free.id-lock-free a{background:url("//upload.wikimedia.org/wikipedia/commons/6/65/Lock-green.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-limited.id-lock-limited a,.mw-parser-output .id-lock-registration.id-lock-registration a{background:url("//upload.wikimedia.org/wikipedia/commons/d/d6/Lock-gray-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-subscription.id-lock-subscription a{background:url("//upload.wikimedia.org/wikipedia/commons/a/aa/Lock-red-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .cs1-ws-icon a{background:url("//upload.wikimedia.org/wikipedia/commons/4/4c/Wikisource-logo.svg")right 0.1em center/12px no-repeat}body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-free a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-limited a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-registration a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-subscription a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .cs1-ws-icon a{background-size:contain;padding:0 1em 0 0}.mw-parser-output .cs1-code{color:inherit;background:inherit;border:none;padding:inherit}.mw-parser-output .cs1-hidden-error{display:none;color:var(--color-error,#d33)}.mw-parser-output .cs1-visible-error{color:var(--color-error,#d33)}.mw-parser-output .cs1-maint{display:none;color:#085;margin-left:0.3em}.mw-parser-output .cs1-kern-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right{padding-right:0.2em}.mw-parser-output .citation .mw-selflink{font-weight:inherit}@media screen{.mw-parser-output .cs1-format{font-size:95%}html.skin-theme-clientpref-night .mw-parser-output .cs1-maint{color:#18911f}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .cs1-maint{color:#18911f}}</style><a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/0-7356-0781-8" title="Special:BookSources/0-7356-0781-8">0-7356-0781-8</a></span> </li> <li id="cite_note-2"><span class="mw-cite-backlink"><b><a href="#cite_ref-2">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://blog.malwarebytes.com/threats/browser-hijack-objects-bhos/">"Browser Hijack Objects (BHOs)"</a>. <i>Malwarebytes Labs</i><span class="reference-accessdate">. Retrieved <span class="nowrap">2021-12-05</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Malwarebytes+Labs&rft.atitle=Browser+Hijack+Objects+%28BHOs%29&rft_id=https%3A%2F%2Fblog.malwarebytes.com%2Fthreats%2Fbrowser-hijack-objects-bhos%2F&rfr_id=info%3Asid%2Fen.wikipedia.org%3ABrowser+Helper+Object" class="Z3988"></span></span> </li> <li id="cite_note-3"><span class="mw-cite-backlink"><b><a href="#cite_ref-3">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFParkHongOhLee2005" class="citation journal cs1">Park, Beomsoo; Hong, Sungjin; Oh, Jaewook; Lee, Heejo (2005). Kantor, Paul; Muresan, Gheorghe; Roberts, Fred; Zeng, Daniel D.; Wang, Fei-Yue; Chen, Hsinchun; Merkle, Ralph C. (eds.). <a rel="nofollow" class="external text" href="https://link.springer.com/chapter/10.1007/11427995_85">"Defending a Web Browser Against Spying with Browser Helper Objects"</a>. <i>Intelligence and Security Informatics</i>. Lecture Notes in Computer Science. Berlin, Heidelberg: Springer: 638–639. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1007%2F11427995_85">10.1007/11427995_85</a>. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-3-540-32063-0" title="Special:BookSources/978-3-540-32063-0"><bdi>978-3-540-32063-0</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Intelligence+and+Security+Informatics&rft.atitle=Defending+a+Web+Browser+Against+Spying+with+Browser+Helper+Objects&rft.pages=638-639&rft.date=2005&rft_id=info%3Adoi%2F10.1007%2F11427995_85&rft.isbn=978-3-540-32063-0&rft.aulast=Park&rft.aufirst=Beomsoo&rft.au=Hong%2C+Sungjin&rft.au=Oh%2C+Jaewook&rft.au=Lee%2C+Heejo&rft_id=https%3A%2F%2Flink.springer.com%2Fchapter%2F10.1007%2F11427995_85&rfr_id=info%3Asid%2Fen.wikipedia.org%3ABrowser+Helper+Object" class="Z3988"></span></span> </li> <li id="cite_note-4"><span class="mw-cite-backlink"><b><a href="#cite_ref-4">^</a></b></span> <span class="reference-text">Computer Associates malware entry at <a rel="nofollow" class="external text" href="http://www.ca.com/us/securityadvisor/virusinfo/virus.aspx?id=42280">ca.com</a>, retrieved 1/16/2009</span> </li> </ol></div> <div class="mw-heading mw-heading2"><h2 id="External_links">External links</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Browser_Helper_Object&action=edit&section=6" title="Edit section: External links"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a rel="nofollow" class="external text" href="https://sites.google.com/site/bhosearch/">Sites.google.com</a> <a rel="nofollow" class="external text" href="https://web.archive.org/web/20141224114851/https://sites.google.com/site/bhosearch/">Archived</a> 2014-12-24 at the <a href="/wiki/Wayback_Machine" title="Wayback Machine">Wayback Machine</a></li></ul> <div class="mw-heading mw-heading3"><h3 id="Microsoft_sites">Microsoft sites</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Browser_Helper_Object&action=edit&section=7" title="Edit section: Microsoft sites"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a rel="nofollow" class="external text" href="http://support.microsoft.com/default.aspx?scid=kb%3BEN-US%3Bq179230"><i>IEHelper-Attaching to Internet Explorer 4.0 by Using a Browser Helper Object</i></a></li> <li><a rel="nofollow" class="external text" href="https://web.archive.org/web/20050109091250/http://www.microsoft.com/windowsxp/using/web/sp2_addonmanager.mspx">Control Internet Explorer Add-ons with Add-on Manager</a> – an article on Microsoft.com that explains this new feature of Windows XP Service Pack 2</li> <li><a rel="nofollow" class="external text" href="http://msdn2.microsoft.com/en-us/library/bb250489.aspx">Building Browser Helper Objects with Visual Studio 2005</a> – an October 2006 MSDN article by Tony Schreiner and John Sudds</li></ul> <div class="mw-heading mw-heading3"><h3 id="Listings_and_examples">Listings and examples</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Browser_Helper_Object&action=edit&section=8" title="Edit section: Listings and examples"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a rel="nofollow" class="external text" href="http://www.systemlookup.com/lists.php?list=1">CLSID List</a> – master list created by Tony Kleinkramer, which attempts to record and identify every BHO available (previously located at – the now defunct – <a href="/wiki/CastleCops" title="CastleCops">castlecops.com</a>) – also includes Toolbar, Explorer Bar and URLSearchHook GUIDs</li> <li><a rel="nofollow" class="external text" href="http://www.adp-gmbh.ch/win/com/bho.html">C++ example code for a BHO</a></li> <li><a rel="nofollow" class="external text" href="http://www.codeproject.com/Articles/19971/How-to-attach-to-Browser-Helper-Object-BHO-with-C">C# example code for a BHO</a></li></ul> <div class="navbox-styles"><style data-mw-deduplicate="TemplateStyles:r1129693374">.mw-parser-output .hlist dl,.mw-parser-output .hlist ol,.mw-parser-output .hlist ul{margin:0;padding:0}.mw-parser-output .hlist dd,.mw-parser-output .hlist dt,.mw-parser-output .hlist li{margin:0;display:inline}.mw-parser-output .hlist.inline,.mw-parser-output .hlist.inline dl,.mw-parser-output .hlist.inline ol,.mw-parser-output .hlist.inline ul,.mw-parser-output .hlist dl dl,.mw-parser-output .hlist dl ol,.mw-parser-output .hlist dl ul,.mw-parser-output .hlist ol dl,.mw-parser-output .hlist ol ol,.mw-parser-output .hlist ol ul,.mw-parser-output .hlist ul dl,.mw-parser-output .hlist ul ol,.mw-parser-output .hlist ul ul{display:inline}.mw-parser-output .hlist .mw-empty-li{display:none}.mw-parser-output .hlist dt::after{content:": "}.mw-parser-output .hlist dd::after,.mw-parser-output .hlist li::after{content:" · ";font-weight:bold}.mw-parser-output .hlist dd:last-child::after,.mw-parser-output .hlist dt:last-child::after,.mw-parser-output .hlist li:last-child::after{content:none}.mw-parser-output .hlist dd dd:first-child::before,.mw-parser-output .hlist dd dt:first-child::before,.mw-parser-output .hlist dd li:first-child::before,.mw-parser-output .hlist dt dd:first-child::before,.mw-parser-output .hlist dt dt:first-child::before,.mw-parser-output .hlist dt li:first-child::before,.mw-parser-output .hlist li dd:first-child::before,.mw-parser-output .hlist li dt:first-child::before,.mw-parser-output .hlist li li:first-child::before{content:" (";font-weight:normal}.mw-parser-output .hlist dd dd:last-child::after,.mw-parser-output .hlist dd dt:last-child::after,.mw-parser-output .hlist dd li:last-child::after,.mw-parser-output .hlist dt dd:last-child::after,.mw-parser-output .hlist dt dt:last-child::after,.mw-parser-output .hlist dt li:last-child::after,.mw-parser-output .hlist li dd:last-child::after,.mw-parser-output .hlist li dt:last-child::after,.mw-parser-output .hlist li li:last-child::after{content:")";font-weight:normal}.mw-parser-output .hlist ol{counter-reset:listitem}.mw-parser-output .hlist ol>li{counter-increment:listitem}.mw-parser-output .hlist ol>li::before{content:" "counter(listitem)"\a0 "}.mw-parser-output .hlist dd ol>li:first-child::before,.mw-parser-output .hlist dt ol>li:first-child::before,.mw-parser-output .hlist li ol>li:first-child::before{content:" ("counter(listitem)"\a0 "}</style><style data-mw-deduplicate="TemplateStyles:r1236075235">.mw-parser-output .navbox{box-sizing:border-box;border:1px solid #a2a9b1;width:100%;clear:both;font-size:88%;text-align:center;padding:1px;margin:1em auto 0}.mw-parser-output .navbox .navbox{margin-top:0}.mw-parser-output .navbox+.navbox,.mw-parser-output .navbox+.navbox-styles+.navbox{margin-top:-1px}.mw-parser-output .navbox-inner,.mw-parser-output .navbox-subgroup{width:100%}.mw-parser-output .navbox-group,.mw-parser-output .navbox-title,.mw-parser-output .navbox-abovebelow{padding:0.25em 1em;line-height:1.5em;text-align:center}.mw-parser-output .navbox-group{white-space:nowrap;text-align:right}.mw-parser-output .navbox,.mw-parser-output .navbox-subgroup{background-color:#fdfdfd}.mw-parser-output .navbox-list{line-height:1.5em;border-color:#fdfdfd}.mw-parser-output .navbox-list-with-group{text-align:left;border-left-width:2px;border-left-style:solid}.mw-parser-output tr+tr>.navbox-abovebelow,.mw-parser-output tr+tr>.navbox-group,.mw-parser-output tr+tr>.navbox-image,.mw-parser-output tr+tr>.navbox-list{border-top:2px solid #fdfdfd}.mw-parser-output .navbox-title{background-color:#ccf}.mw-parser-output .navbox-abovebelow,.mw-parser-output .navbox-group,.mw-parser-output .navbox-subgroup .navbox-title{background-color:#ddf}.mw-parser-output .navbox-subgroup .navbox-group,.mw-parser-output .navbox-subgroup .navbox-abovebelow{background-color:#e6e6ff}.mw-parser-output .navbox-even{background-color:#f7f7f7}.mw-parser-output .navbox-odd{background-color:transparent}.mw-parser-output .navbox .hlist td dl,.mw-parser-output .navbox .hlist td ol,.mw-parser-output .navbox .hlist td ul,.mw-parser-output .navbox td.hlist dl,.mw-parser-output .navbox td.hlist ol,.mw-parser-output .navbox td.hlist ul{padding:0.125em 0}.mw-parser-output .navbox .navbar{display:block;font-size:100%}.mw-parser-output .navbox-title .navbar{float:left;text-align:left;margin-right:0.5em}body.skin--responsive .mw-parser-output .navbox-image img{max-width:none!important}@media print{body.ns-0 .mw-parser-output .navbox{display:none!important}}</style></div><div role="navigation" class="navbox" aria-labelledby="Information_security" style="padding:3px"><table class="nowraplinks mw-collapsible autocollapse navbox-inner" style="border-spacing:0;background:transparent;color:inherit"><tbody><tr><th scope="col" class="navbox-title" colspan="3"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><style data-mw-deduplicate="TemplateStyles:r1239400231">.mw-parser-output .navbar{display:inline;font-size:88%;font-weight:normal}.mw-parser-output .navbar-collapse{float:left;text-align:left}.mw-parser-output .navbar-boxtext{word-spacing:0}.mw-parser-output .navbar ul{display:inline-block;white-space:nowrap;line-height:inherit}.mw-parser-output .navbar-brackets::before{margin-right:-0.125em;content:"[ "}.mw-parser-output .navbar-brackets::after{margin-left:-0.125em;content:" ]"}.mw-parser-output .navbar li{word-spacing:-0.125em}.mw-parser-output .navbar a>span,.mw-parser-output .navbar a>abbr{text-decoration:inherit}.mw-parser-output .navbar-mini abbr{font-variant:small-caps;border-bottom:none;text-decoration:none;cursor:inherit}.mw-parser-output .navbar-ct-full{font-size:114%;margin:0 7em}.mw-parser-output .navbar-ct-mini{font-size:114%;margin:0 4em}html.skin-theme-clientpref-night .mw-parser-output .navbar li a abbr{color:var(--color-base)!important}@media(prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .navbar li a abbr{color:var(--color-base)!important}}@media print{.mw-parser-output .navbar{display:none!important}}</style><div class="navbar plainlinks hlist navbar-mini"><ul><li class="nv-view"><a href="/wiki/Template:Information_security" title="Template:Information security"><abbr title="View this template">v</abbr></a></li><li class="nv-talk"><a href="/wiki/Template_talk:Information_security" title="Template talk:Information security"><abbr title="Discuss this template">t</abbr></a></li><li class="nv-edit"><a href="/wiki/Special:EditPage/Template:Information_security" title="Special:EditPage/Template:Information security"><abbr title="Edit this template">e</abbr></a></li></ul></div><div id="Information_security" style="font-size:114%;margin:0 4em"><a href="/wiki/Information_security" title="Information security">Information security</a></div></th></tr><tr><th scope="row" class="navbox-group" style="width:1%">Related security categories</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Computer_security" title="Computer security">Computer security</a></li> <li><a href="/wiki/Automotive_security" title="Automotive security">Automotive security</a></li> <li><a href="/wiki/Cybercrime" title="Cybercrime">Cybercrime</a> <ul><li><a href="/wiki/Cybersex_trafficking" title="Cybersex trafficking">Cybersex trafficking</a></li> <li><a href="/wiki/Computer_fraud" title="Computer fraud">Computer fraud</a></li></ul></li> <li><a href="/wiki/Cybergeddon" title="Cybergeddon">Cybergeddon</a></li> <li><a href="/wiki/Cyberterrorism" title="Cyberterrorism">Cyberterrorism</a></li> <li><a href="/wiki/Cyberwarfare" title="Cyberwarfare">Cyberwarfare</a></li> <li><a href="/wiki/Electromagnetic_warfare" class="mw-redirect" title="Electromagnetic warfare">Electromagnetic warfare</a></li> <li><a href="/wiki/Information_warfare" title="Information warfare">Information warfare</a></li> <li><a href="/wiki/Internet_security" title="Internet security">Internet security</a></li> <li><a href="/wiki/Mobile_security" title="Mobile security">Mobile security</a></li> <li><a href="/wiki/Network_security" title="Network security">Network security</a></li> <li><a href="/wiki/Copy_protection" title="Copy protection">Copy protection</a></li> <li><a href="/wiki/Digital_rights_management" title="Digital rights management">Digital rights management</a></li></ul> </div></td><td class="noviewer navbox-image" rowspan="3" style="width:1px;padding:0 0 0 2px"><div><figure class="mw-halign-center" typeof="mw:File"><a href="/wiki/File:CIAJMK1209-en.svg" class="mw-file-description" title="vectorial version"><img alt="vectorial version" src="//upload.wikimedia.org/wikipedia/commons/thumb/c/c5/CIAJMK1209-en.svg/150px-CIAJMK1209-en.svg.png" decoding="async" width="150" height="150" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/c/c5/CIAJMK1209-en.svg/225px-CIAJMK1209-en.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/c/c5/CIAJMK1209-en.svg/300px-CIAJMK1209-en.svg.png 2x" data-file-width="496" data-file-height="496" /></a><figcaption>vectorial version</figcaption></figure></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Threat_(computer)" class="mw-redirect" title="Threat (computer)">Threats</a></th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Adware" title="Adware">Adware</a></li> <li><a href="/wiki/Advanced_persistent_threat" title="Advanced persistent threat">Advanced persistent threat</a></li> <li><a href="/wiki/Arbitrary_code_execution" title="Arbitrary code execution">Arbitrary code execution</a></li> <li><a href="/wiki/Backdoor_(computing)" title="Backdoor (computing)">Backdoors</a></li> <li>Bombs <ul><li><a href="/wiki/Fork_bomb" title="Fork bomb">Fork</a></li> <li><a href="/wiki/Logic_bomb" title="Logic bomb">Logic</a></li> <li><a href="/wiki/Time_bomb_(software)" title="Time bomb (software)">Time</a></li> <li><a href="/wiki/Zip_bomb" title="Zip bomb">Zip</a></li></ul></li> <li><a href="/wiki/Hardware_backdoor" title="Hardware backdoor">Hardware backdoors</a></li> <li><a href="/wiki/Code_injection" title="Code injection">Code injection</a></li> <li><a href="/wiki/Crimeware" title="Crimeware">Crimeware</a></li> <li><a href="/wiki/Cross-site_scripting" title="Cross-site scripting">Cross-site scripting</a></li> <li><a href="/wiki/Cross-site_leaks" title="Cross-site leaks">Cross-site leaks</a></li> <li><a href="/wiki/DOM_clobbering" title="DOM clobbering">DOM clobbering</a></li> <li><a href="/wiki/History_sniffing" title="History sniffing">History sniffing</a></li> <li><a href="/wiki/Cryptojacking" title="Cryptojacking">Cryptojacking</a></li> <li><a href="/wiki/Botnet" title="Botnet">Botnets</a></li> <li><a href="/wiki/Data_breach" title="Data breach">Data breach</a></li> <li><a href="/wiki/Drive-by_download" title="Drive-by download">Drive-by download</a></li> <li><a class="mw-selflink selflink">Browser Helper Objects</a></li> <li><a href="/wiki/Computer_virus" title="Computer virus">Viruses</a></li> <li><a href="/wiki/Data_scraping" title="Data scraping">Data scraping</a></li> <li><a href="/wiki/Denial-of-service_attack" title="Denial-of-service attack">Denial-of-service attack</a></li> <li><a href="/wiki/Eavesdropping" title="Eavesdropping">Eavesdropping</a></li> <li><a href="/wiki/Email_fraud" title="Email fraud">Email fraud</a></li> <li><a href="/wiki/Email_spoofing" title="Email spoofing">Email spoofing</a></li> <li><a href="/wiki/Exploit_(computer_security)" title="Exploit (computer security)">Exploits</a></li> <li><a href="/wiki/Dialer#Fraudulent_dialer" title="Dialer">Fraudulent dialers</a></li> <li><a href="/wiki/Hacktivism" title="Hacktivism">Hacktivism</a></li> <li><a href="/wiki/Infostealer" title="Infostealer">Infostealer</a></li> <li><a href="/wiki/Insecure_direct_object_reference" title="Insecure direct object reference">Insecure direct object reference</a></li> <li><a href="/wiki/Keystroke_logging" title="Keystroke logging">Keystroke loggers</a></li> <li><a href="/wiki/Malware" title="Malware">Malware</a></li> <li><a href="/wiki/Payload_(computing)" title="Payload (computing)">Payload</a></li> <li><a href="/wiki/Phishing" title="Phishing">Phishing</a> <ul><li><a href="/wiki/Voice_phishing" title="Voice phishing">Voice</a></li></ul></li> <li><a href="/wiki/Polymorphic_engine" title="Polymorphic engine">Polymorphic engine</a></li> <li><a href="/wiki/Privilege_escalation" title="Privilege escalation">Privilege escalation</a></li> <li><a href="/wiki/Ransomware" title="Ransomware">Ransomware</a></li> <li><a href="/wiki/Rootkit" title="Rootkit">Rootkits</a></li> <li><a href="/wiki/Scareware" title="Scareware">Scareware</a></li> <li><a href="/wiki/Shellcode" title="Shellcode">Shellcode</a></li> <li><a href="/wiki/Spamming" title="Spamming">Spamming</a></li> <li><a href="/wiki/Social_engineering_(security)" title="Social engineering (security)">Social engineering</a></li> <li><a href="/wiki/Spyware" title="Spyware">Spyware</a></li> <li><a href="/wiki/Software_bug" title="Software bug">Software bugs</a></li> <li><a href="/wiki/Trojan_horse_(computing)" title="Trojan horse (computing)">Trojan horses</a></li> <li><a href="/wiki/Hardware_Trojan" title="Hardware Trojan">Hardware Trojans</a></li> <li><a href="/wiki/Remote_access_trojan" class="mw-redirect" title="Remote access trojan">Remote access trojans</a></li> <li><a href="/wiki/Vulnerability_(computing)" class="mw-redirect" title="Vulnerability (computing)">Vulnerability</a></li> <li><a href="/wiki/Web_shell" title="Web shell">Web shells</a></li> <li><a href="/wiki/Wiper_(malware)" title="Wiper (malware)">Wiper</a></li> <li><a href="/wiki/Computer_worm" title="Computer worm">Worms</a></li> <li><a href="/wiki/SQL_injection" title="SQL injection">SQL injection</a></li> <li><a href="/wiki/Rogue_security_software" title="Rogue security software">Rogue security software</a></li> <li><a href="/wiki/Zombie_(computing)" title="Zombie (computing)">Zombie</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Defenses</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Application_security" title="Application security">Application security</a> <ul><li><a href="/wiki/Secure_coding" title="Secure coding">Secure coding</a></li> <li>Secure by default</li> <li><a href="/wiki/Secure_by_design" title="Secure by design">Secure by design</a> <ul><li><a href="/wiki/Misuse_case" title="Misuse case">Misuse case</a></li></ul></li></ul></li> <li><a href="/wiki/Computer_access_control" title="Computer access control">Computer access control</a> <ul><li><a href="/wiki/Authentication" title="Authentication">Authentication</a> <ul><li><a href="/wiki/Multi-factor_authentication" title="Multi-factor authentication">Multi-factor authentication</a></li></ul></li> <li><a href="/wiki/Authorization" title="Authorization">Authorization</a></li></ul></li> <li><a href="/wiki/Computer_security_software" title="Computer security software">Computer security software</a> <ul><li><a href="/wiki/Antivirus_software" title="Antivirus software">Antivirus software</a></li> <li><a href="/wiki/Security-focused_operating_system" title="Security-focused operating system">Security-focused operating system</a></li></ul></li> <li><a href="/wiki/Data-centric_security" title="Data-centric security">Data-centric security</a></li> <li><a href="/wiki/Code_obfuscation" class="mw-redirect" title="Code obfuscation">Obfuscation (software)</a></li> <li><a href="/wiki/Data_masking" title="Data masking">Data masking</a></li> <li><a href="/wiki/Encryption" title="Encryption">Encryption</a></li> <li><a href="/wiki/Firewall_(computing)" title="Firewall (computing)">Firewall</a></li> <li><a href="/wiki/Intrusion_detection_system" title="Intrusion detection system">Intrusion detection system</a> <ul><li><a href="/wiki/Host-based_intrusion_detection_system" title="Host-based intrusion detection system">Host-based intrusion detection system</a> (HIDS)</li> <li><a href="/wiki/Anomaly_detection" title="Anomaly detection">Anomaly detection</a></li></ul></li> <li><a href="/wiki/Information_security_management" title="Information security management">Information security management</a> <ul><li><a href="/wiki/Information_risk_management" class="mw-redirect" title="Information risk management">Information risk management</a></li> <li><a href="/wiki/Security_information_and_event_management" title="Security information and event management">Security information and event management</a> (SIEM)</li></ul></li> <li><a href="/wiki/Runtime_application_self-protection" title="Runtime application self-protection">Runtime application self-protection</a></li> <li><a href="/wiki/Site_isolation" title="Site isolation">Site isolation</a></li></ul> </div></td></tr></tbody></table></div> <div class="navbox-styles"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236075235"></div><div role="navigation" class="navbox" aria-labelledby="Microsoft_APIs_and_frameworks" style="padding:3px"><table class="nowraplinks mw-collapsible autocollapse navbox-inner" style="border-spacing:0;background:transparent;color:inherit"><tbody><tr><th scope="col" class="navbox-title" colspan="2"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1239400231"><div class="navbar plainlinks hlist navbar-mini"><ul><li class="nv-view"><a href="/wiki/Template:Microsoft_APIs" title="Template:Microsoft APIs"><abbr title="View this template">v</abbr></a></li><li class="nv-talk"><a href="/wiki/Template_talk:Microsoft_APIs" title="Template talk:Microsoft APIs"><abbr title="Discuss this template">t</abbr></a></li><li class="nv-edit"><a href="/wiki/Special:EditPage/Template:Microsoft_APIs" title="Special:EditPage/Template:Microsoft APIs"><abbr title="Edit this template">e</abbr></a></li></ul></div><div id="Microsoft_APIs_and_frameworks" style="font-size:114%;margin:0 4em"><a href="/wiki/List_of_Microsoft_Windows_application_programming_interfaces_and_frameworks" title="List of Microsoft Windows application programming interfaces and frameworks">Microsoft APIs and frameworks</a></div></th></tr><tr><th scope="row" class="navbox-group" style="width:1%;line-height:1.2em">Graphics and UI</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Desktop_Window_Manager" title="Desktop Window Manager">Desktop Window Manager</a></li> <li><a href="/wiki/Direct2D" title="Direct2D">Direct2D</a></li> <li><a href="/wiki/Direct3D" title="Direct3D">Direct3D</a></li> <li><a href="/wiki/D3DX" title="D3DX">D3D (extensions)</a></li> <li><a href="/wiki/Graphics_Device_Interface" title="Graphics Device Interface">GDI / GDI+</a></li> <li><a href="/wiki/Windows_Presentation_Foundation" title="Windows Presentation Foundation">WPF</a></li> <li><a href="/wiki/Microsoft_Silverlight" title="Microsoft Silverlight">Silverlight</a></li> <li><a href="/wiki/Windows_UI_Library" title="Windows UI Library">WinUI</a></li> <li><a href="/wiki/Windows_Color_System" title="Windows Color System">Windows Color System</a></li> <li><a href="/wiki/Windows_Image_Acquisition" title="Windows Image Acquisition">Windows Image Acquisition</a></li> <li><a href="/wiki/Windows_Imaging_Component" title="Windows Imaging Component">Windows Imaging Component</a></li> <li><a href="/wiki/DirectX_Graphics_Infrastructure" title="DirectX Graphics Infrastructure">DirectX Graphics Infrastructure (DXGI)</a></li> <li><a href="/wiki/Windows_Advanced_Rasterization_Platform" title="Windows Advanced Rasterization Platform">Windows Advanced Rasterization Platform</a></li> <li><a href="/wiki/WinG" title="WinG">WinG</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%;line-height:1.2em">Audio</th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/DirectMusic" title="DirectMusic">DirectMusic</a></li> <li><a href="/wiki/DirectSound" title="DirectSound">DirectSound</a></li> <li><a href="/wiki/DirectX_plugin" title="DirectX plugin">DirectX plugin</a></li> <li><a href="/wiki/Cross-platform_Audio_Creation_Tool" title="Cross-platform Audio Creation Tool">XACT</a></li> <li><a href="/wiki/Microsoft_Speech_API" title="Microsoft Speech API">Speech API</a></li> <li><a href="/wiki/XAudio2" title="XAudio2">XAudio2</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%;line-height:1.2em">Multimedia</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/DirectX" title="DirectX">DirectX</a> <ul><li><a href="/wiki/DirectX_Media_Objects" class="mw-redirect" title="DirectX Media Objects">Media Objects</a></li> <li><a href="/wiki/DirectX_Video_Acceleration" title="DirectX Video Acceleration">Video Acceleration</a></li></ul></li> <li><a href="/wiki/Xinput" class="mw-redirect" title="Xinput">Xinput</a></li> <li><a href="/wiki/DirectInput" title="DirectInput">DirectInput</a></li> <li><a href="/wiki/DirectShow" title="DirectShow">DirectShow</a></li> <li><a href="/wiki/Image_Mastering_API" title="Image Mastering API">Image Mastering API</a></li> <li><a href="/wiki/Managed_DirectX" title="Managed DirectX">Managed DirectX</a></li> <li><a href="/wiki/Media_Foundation" title="Media Foundation">Media Foundation</a></li> <li><a href="/wiki/Microsoft_XNA" title="Microsoft XNA">XNA</a></li> <li><a href="/wiki/Windows_Media" title="Windows Media">Windows Media</a></li> <li><a href="/wiki/Video_for_Windows" title="Video for Windows">Video for Windows</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%;line-height:1.2em">Web</th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Trident_(software)" title="Trident (software)">MSHTML</a></li> <li><a href="/wiki/Windows_RSS_Platform" title="Windows RSS Platform">RSS Platform</a></li> <li><a href="/wiki/JScript" title="JScript">JScript</a></li> <li><a href="/wiki/VBScript" title="VBScript">VBScript</a></li> <li><a class="mw-selflink selflink">BHO</a></li> <li><a href="/wiki/XMLHttpRequest" title="XMLHttpRequest">XDR</a></li> <li><a href="/wiki/Microsoft_Gadgets" title="Microsoft Gadgets">SideBar Gadgets</a></li> <li><a href="/wiki/TypeScript" title="TypeScript">TypeScript</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%;line-height:1.2em">Data access</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Microsoft_Data_Access_Components" title="Microsoft Data Access Components">Data Access Components (MDAC)</a> <ul><li><a href="/wiki/ActiveX_Data_Objects" title="ActiveX Data Objects">ADO</a></li> <li><a href="/wiki/ADO.NET" title="ADO.NET">ADO.NET</a></li> <li><a href="/wiki/ODBC" class="mw-redirect" title="ODBC">ODBC</a></li> <li><a href="/wiki/OLE_DB" title="OLE DB">OLE DB</a></li></ul></li> <li><a href="/wiki/Extensible_Storage_Engine" title="Extensible Storage Engine">Extensible Storage Engine</a></li> <li><a href="/wiki/Entity_Framework" title="Entity Framework">Entity Framework</a></li> <li><a href="/wiki/Microsoft_Sync_Framework" title="Microsoft Sync Framework">Sync Framework</a></li> <li><a href="/wiki/Access_Database_Engine" title="Access Database Engine">Access Database Engine</a></li> <li><a href="/wiki/MSXML" title="MSXML">MSXML</a></li> <li><a href="/wiki/Open_Packaging_Conventions" title="Open Packaging Conventions">OPC</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%;line-height:1.2em">Networking</th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Winsock" title="Winsock">Winsock</a> <ul><li><a href="/wiki/Layered_Service_Provider" title="Layered Service Provider">LSP</a></li></ul></li> <li><a href="/wiki/Windows_Vista_networking_technologies#Winsock_Kernel" title="Windows Vista networking technologies">Winsock Kernel</a></li> <li><a href="/wiki/Windows_Filtering_Platform" title="Windows Filtering Platform">Filtering Platform</a></li> <li><a href="/wiki/Network_Driver_Interface_Specification" title="Network Driver Interface Specification">NDIS</a></li> <li><a href="/wiki/Windows_Rally" title="Windows Rally">Windows Rally</a></li> <li><a href="/wiki/Background_Intelligent_Transfer_Service" title="Background Intelligent Transfer Service">BITS</a></li> <li><a href="/wiki/Windows_Vista_networking_technologies#Peer-to-peer_communication" title="Windows Vista networking technologies">P2P API</a></li> <li><a href="/wiki/Microsoft_Message_Queuing" title="Microsoft Message Queuing">MSMQ</a></li> <li><a href="/wiki/Microsoft_Messaging_Passing_Interface" class="mw-redirect" title="Microsoft Messaging Passing Interface">MS MPI</a></li> <li><a href="/wiki/DirectPlay" title="DirectPlay">DirectPlay</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%;line-height:1.2em">Communication</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/MAPI" title="MAPI">Messaging API</a></li> <li><a href="/wiki/Telephony_Application_Programming_Interface" title="Telephony Application Programming Interface">Telephony API</a></li> <li><a href="/wiki/Windows_Communication_Foundation" title="Windows Communication Foundation">WCF</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%;line-height:1.2em">Administration and<br />management</th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Win32_console" class="mw-redirect" title="Win32 console">Win32 console</a></li> <li><a href="/wiki/Windows_Script_Host" title="Windows Script Host">Windows Script Host</a></li> <li><a href="/wiki/Windows_Management_Instrumentation" title="Windows Management Instrumentation">WMI (extensions)</a></li> <li><a href="/wiki/PowerShell" title="PowerShell">PowerShell</a></li> <li><a href="/wiki/Windows_Task_Scheduler" title="Windows Task Scheduler">Task Scheduler</a></li> <li><a href="/wiki/Windows_Vista_I/O_technologies#Offline_Files" title="Windows Vista I/O technologies">Offline Files</a></li> <li><a href="/wiki/Shadow_Copy" title="Shadow Copy">Shadow Copy</a></li> <li><a href="/wiki/Windows_Installer" title="Windows Installer">Windows Installer</a></li> <li><a href="/wiki/Windows_Error_Reporting" title="Windows Error Reporting">Error Reporting</a></li> <li><a href="/wiki/Event_Viewer#Windows_Event_Log" title="Event Viewer">Event Log</a></li> <li><a href="/wiki/Common_Log_File_System" title="Common Log File System">Common Log File System</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%;line-height:1.2em"><a href="/wiki/Component-based_software_engineering" title="Component-based software engineering">Component model</a></th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Component_Object_Model" title="Component Object Model">COM</a></li> <li><a href="/wiki/Component_Object_Model#COM+" title="Component Object Model">COM+</a></li> <li><a href="/wiki/ActiveX" title="ActiveX">ActiveX</a></li> <li><a href="/wiki/Distributed_Component_Object_Model" title="Distributed Component Object Model">Distributed Component Object Model</a></li> <li><a href="/wiki/.NET_Framework" title=".NET Framework">.NET Framework</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%;line-height:1.2em"><a href="/wiki/Library_(computing)" title="Library (computing)">Libraries</a></th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Framework_Class_Library" title="Framework Class Library">Framework Class Library</a></li> <li><a href="/wiki/Microsoft_Foundation_Class_Library" title="Microsoft Foundation Class Library">Microsoft Foundation Classes (MFC)</a></li> <li><a href="/wiki/Active_Template_Library" title="Active Template Library">Active Template Library (ATL)</a></li> <li><a href="/wiki/Windows_Template_Library" title="Windows Template Library">Windows Template Library (WTL)</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%;line-height:1.2em"><a href="/wiki/Device_driver" title="Device driver">Device drivers</a></th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Windows_Driver_Model" title="Windows Driver Model">WDM</a></li> <li><a href="/wiki/Windows_Driver_Frameworks" title="Windows Driver Frameworks">WDF</a> <ul><li><a href="/wiki/Kernel-Mode_Driver_Framework" title="Kernel-Mode Driver Framework">KMDF</a></li> <li><a href="/wiki/User-Mode_Driver_Framework" title="User-Mode Driver Framework">UMDF</a></li></ul></li> <li><a href="/wiki/Windows_Display_Driver_Model" title="Windows Display Driver Model">WDDM</a></li> <li><a href="/wiki/Network_Driver_Interface_Specification" title="Network Driver Interface Specification">NDIS</a></li> <li><a href="/wiki/Universal_Audio_Architecture" title="Universal Audio Architecture">UAA</a></li> <li><a href="/wiki/Broadcast_Driver_Architecture" title="Broadcast Driver Architecture">BDA</a></li> <li><a href="/wiki/VxD" title="VxD">VxD</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%;line-height:1.2em">Security</th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Microsoft_CryptoAPI" title="Microsoft CryptoAPI">Crypto API</a> <ul><li><a href="/wiki/CAPICOM" title="CAPICOM">CAPICOM</a></li></ul></li> <li><a href="/wiki/Windows_CardSpace" title="Windows CardSpace">Windows CardSpace</a></li> <li><a href="/wiki/Data_Protection_API" title="Data Protection API">Data Protection API</a></li> <li><a href="/wiki/Security_Support_Provider_Interface" title="Security Support Provider Interface">Security Support Provider Interface (SSPI)</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%;line-height:1.2em"><a href="/wiki/.NET_Framework" title=".NET Framework">.NET</a></th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/ASP.NET" title="ASP.NET">ASP.NET</a></li> <li><a href="/wiki/ADO.NET" title="ADO.NET">ADO.NET</a></li> <li><a href="/wiki/.NET_Remoting" title=".NET Remoting">Remoting</a></li> <li><a href="/wiki/Microsoft_Silverlight" title="Microsoft Silverlight">Silverlight</a></li> <li><a href="/wiki/Task_Parallel_Library" class="mw-redirect" title="Task Parallel Library">TPL</a></li> <li><a href="/wiki/Windows_Communication_Foundation" title="Windows Communication Foundation">WCF</a></li> <li><a href="/wiki/Windows_CardSpace" title="Windows CardSpace">WCS</a></li> <li><a href="/wiki/Windows_Presentation_Foundation" title="Windows Presentation Foundation">WPF</a></li> <li><a href="/wiki/Windows_Workflow_Foundation" title="Windows Workflow Foundation">WF</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%;line-height:1.2em"><a href="/wiki/Software_Factory_(Microsoft_.NET)" class="mw-redirect" title="Software Factory (Microsoft .NET)">Software factories</a></th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Microsoft_Enterprise_Library" title="Microsoft Enterprise Library">Enterprise Library</a></li> <li><a href="/wiki/Composite_UI_Application_Block" title="Composite UI Application Block">Composite UI</a></li> <li><a href="/wiki/Microsoft_Customer_Care_Framework" title="Microsoft Customer Care Framework">CCF</a></li> <li><a href="/wiki/Microsoft_Connected_Services_Framework" title="Microsoft Connected Services Framework">CSF</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%;line-height:1.2em"><a href="/wiki/Inter-process_communication" title="Inter-process communication">IPC</a></th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Microsoft_RPC" title="Microsoft RPC">MSRPC</a></li> <li><a href="/wiki/Dynamic_Data_Exchange" title="Dynamic Data Exchange">Dynamic Data Exchange (DDE)</a></li> <li><a href="/wiki/.NET_Remoting" title=".NET Remoting">Remoting</a></li> <li><a href="/wiki/Windows_Communication_Foundation" title="Windows Communication Foundation">WCF</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%;line-height:1.2em">Accessibility</th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Microsoft_Active_Accessibility" title="Microsoft Active Accessibility">Active Accessibility</a></li> <li><a href="/wiki/Microsoft_UI_Automation" title="Microsoft UI Automation">UI Automation</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%;line-height:1.2em">Text and multilingual<br />support</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/DirectWrite" title="DirectWrite">DirectWrite</a></li> <li><a href="/wiki/Text_Services_Framework" title="Text Services Framework">Text Services Framework</a></li> <li><a href="/wiki/Text_Object_Model" title="Text Object Model">Text Object Model</a></li> <li><a href="/wiki/Input_method" title="Input method">Input method editor</a></li> <li><a href="/wiki/Language_Interface_Pack" title="Language Interface Pack">Language Interface Pack</a></li> <li><a href="/wiki/Multilingual_User_Interface" title="Multilingual User Interface">Multilingual User Interface</a></li> <li><a href="/wiki/Uniscribe" title="Uniscribe">Uniscribe</a></li></ul> </div></td></tr></tbody></table></div> <div class="navbox-styles"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236075235"></div><div role="navigation" class="navbox" aria-labelledby="Internet_Explorer" style="padding:3px"><table class="nowraplinks hlist mw-collapsible autocollapse navbox-inner" style="border-spacing:0;background:transparent;color:inherit"><tbody><tr><th scope="col" class="navbox-title" colspan="2"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1239400231"><div class="navbar plainlinks hlist navbar-mini"><ul><li class="nv-view"><a href="/wiki/Template:Internet_Explorer" title="Template:Internet Explorer"><abbr title="View this template">v</abbr></a></li><li class="nv-talk"><a href="/wiki/Template_talk:Internet_Explorer" title="Template talk:Internet Explorer"><abbr title="Discuss this template">t</abbr></a></li><li class="nv-edit"><a href="/wiki/Special:EditPage/Template:Internet_Explorer" title="Special:EditPage/Template:Internet Explorer"><abbr title="Edit this template">e</abbr></a></li></ul></div><div id="Internet_Explorer" style="font-size:114%;margin:0 4em"><a href="/wiki/Internet_Explorer" title="Internet Explorer">Internet Explorer</a></div></th></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Internet_Explorer_version_history" title="Internet Explorer version history">Versions</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:7em">Main</th><td class="navbox-list-with-group navbox-list navbox-odd" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Internet_Explorer_1" class="mw-redirect" title="Internet Explorer 1">1</a></li> <li><a href="/wiki/Internet_Explorer_2" title="Internet Explorer 2">2</a></li> <li><a href="/wiki/Internet_Explorer_3" title="Internet Explorer 3">3</a></li> <li><a href="/wiki/Internet_Explorer_4" title="Internet Explorer 4">4</a></li> <li><a href="/wiki/Internet_Explorer_5" title="Internet Explorer 5">5</a></li> <li><a href="/wiki/Internet_Explorer_6" title="Internet Explorer 6">6</a></li> <li><a href="/wiki/Internet_Explorer_7" title="Internet Explorer 7">7</a></li> <li><a href="/wiki/Internet_Explorer_8" title="Internet Explorer 8">8</a></li> <li><a href="/wiki/Internet_Explorer_9" title="Internet Explorer 9">9</a></li> <li><a href="/wiki/Internet_Explorer_10" title="Internet Explorer 10">10</a></li> <li><a href="/wiki/Internet_Explorer_11" title="Internet Explorer 11">11</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:7em">Other</th><td class="navbox-list-with-group navbox-list navbox-even" style="padding:0"><div style="padding:0 0.25em"> <ul><li><i><a href="/wiki/Internet_Explorer_Mobile" title="Internet Explorer Mobile">Mobile</a></i></li> <li><i><a href="/wiki/Internet_Explorer_for_Mac" title="Internet Explorer for Mac">for Mac</a></i></li> <li><i><a href="/wiki/Internet_Explorer_for_UNIX" title="Internet Explorer for UNIX">for UNIX</a></i></li> <li><a href="/wiki/IEs4Linux" title="IEs4Linux">IEs4Linux</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Overview</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/History_of_Internet_Explorer" title="History of Internet Explorer">History</a></li> <li><a href="/wiki/List_of_Internet_Explorer_add-ons" title="List of Internet Explorer add-ons">Add-ons</a></li> <li><a href="/wiki/CSS_box_model" title="CSS box model">Box model</a></li> <li><a class="mw-selflink selflink">Browser Helper Object (BHO)</a></li> <li><a href="/wiki/List_of_Internet_Explorer_extensions" class="mw-redirect" title="List of Internet Explorer extensions">Extensions</a></li> <li><a href="/wiki/Removal_of_Internet_Explorer" title="Removal of Internet Explorer">Removal</a></li> <li><a href="/wiki/Internet_Explorer_shell" title="Internet Explorer shell">Shells</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Technologies</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Accelerator_(Internet_Explorer)" title="Accelerator (Internet Explorer)">Accelerator</a></li> <li><a href="/wiki/ActiveX" title="ActiveX">ActiveX</a></li> <li><a href="/wiki/HTML" title="HTML">HTML</a> <ul><li><a href="/wiki/HTML_Application" title="HTML Application">HTA</a></li> <li><a href="/wiki/HTML_Components" title="HTML Components">HTML Components</a></li></ul></li> <li><a href="/wiki/Favicon" title="Favicon">favicon.ico</a></li> <li><a href="/wiki/HTML%2BTIME" title="HTML+TIME">HTML+TIME</a></li> <li><a href="/wiki/Index.dat" title="Index.dat">Index.dat</a></li> <li><a href="/wiki/JScript" title="JScript">JScript</a></li> <li><a href="/wiki/MHTML" title="MHTML">MHTML</a></li> <li><a href="/wiki/MSXML" title="MSXML">MSXML</a></li> <li><a href="/wiki/Windows_RSS_Platform" title="Windows RSS Platform">RSS Platform</a></li> <li><a href="/wiki/Smart_tag_(Microsoft)" title="Smart tag (Microsoft)">Smart tags</a></li> <li><a href="/wiki/Temporary_Internet_Files" title="Temporary Internet Files">Temporary Internet Files</a></li> <li><a href="/wiki/Vector_Markup_Language" title="Vector Markup Language">Vector Markup Language</a></li> <li><a href="/wiki/Web_Slice" title="Web Slice">Web Slice</a></li> <li><a href="/wiki/Web_Proxy_Autodiscovery_Protocol" class="mw-redirect" title="Web Proxy Autodiscovery Protocol">WPAD</a></li> <li><a href="/wiki/XMLHttpRequest" title="XMLHttpRequest">XHR/XDomainRequest</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Software and engines</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Internet_Explorer_Administration_Kit" title="Internet Explorer Administration Kit">Administration Kit</a></li> <li><a href="/wiki/Internet_Explorer_Developer_Tools" class="mw-redirect" title="Internet Explorer Developer Tools">Developer Tools</a></li> <li><a href="/wiki/Integrated_Windows_Authentication" title="Integrated Windows Authentication">Integrated Windows Authentication</a></li> <li><a href="/wiki/Tasman_(browser_engine)" title="Tasman (browser engine)">Tasman</a></li> <li><a href="/wiki/Trident_(software)" title="Trident (software)">MSHTML</a> <ul><li><a href="/wiki/Chakra_(JScript_engine)" title="Chakra (JScript engine)">Chakra</a></li></ul></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Implementations</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Active_Channel" title="Active Channel">Active Channel</a></li> <li><a href="/wiki/Active_Desktop" title="Active Desktop">Active Desktop</a></li> <li><a href="/wiki/ActiveMovie" title="ActiveMovie">ActiveMovie</a></li> <li><a href="/wiki/Channel_Definition_Format" title="Channel Definition Format">Channel Definition Format (.cdf)</a></li> <li><a href="/wiki/Microsoft_Comic_Chat" title="Microsoft Comic Chat">Comic Chat/Chat 2.0</a></li> <li><a href="/wiki/DirectX_Media" title="DirectX Media">DirectX Media</a></li> <li><a href="/wiki/Microsoft_Internet_Mail_and_News" class="mw-redirect" title="Microsoft Internet Mail and News">Internet Mail and News</a></li> <li><a href="/wiki/Microsoft_Java_Virtual_Machine" title="Microsoft Java Virtual Machine">Microsoft Java Virtual Machine (MSJVM)</a></li> <li><a href="/wiki/MSN_Explorer" class="mw-redirect" title="MSN Explorer">MSN Explorer</a></li> <li><a href="/wiki/MSN_for_Mac_OS_X" class="mw-redirect" title="MSN for Mac OS X">MSN for Mac OS X</a></li> <li><a href="/wiki/Microsoft_NetMeeting" title="Microsoft NetMeeting">NetMeeting</a></li> <li><a href="/wiki/NetShow" title="NetShow">NetShow</a></li> <li><a href="/wiki/Outlook_Express" title="Outlook Express">Outlook Express</a></li> <li><a href="/wiki/Server_gated_cryptography" class="mw-redirect" title="Server gated cryptography">Server Gated Cryptography (SGC)</a></li> <li><a href="/wiki/Spyglass,_Inc." title="Spyglass, Inc.">Spyglass</a></li> <li><a href="/wiki/Windows_Address_Book" title="Windows Address Book">Windows Address Book</a></li> <li><a href="/wiki/Windows_Desktop_Update" title="Windows Desktop Update">Windows Desktop Update</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Events</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Browser_wars#First_Browser_War" title="Browser wars">First Browser War</a></li> <li><a href="/wiki/Browser_wars#Second_Browser_War" title="Browser wars">Second Browser War</a></li> <li><a href="/wiki/Download.ject" title="Download.ject">Download.ject</a></li> <li><a href="/wiki/Eolas#Patents" title="Eolas"><i>Eolas v. Microsoft</i></a></li> <li><a href="/wiki/Microsoft_Java_Virtual_Machine#Sun_vs._Microsoft" title="Microsoft Java Virtual Machine"><i>Sun v. Microsoft</i></a></li> <li><i><a href="/wiki/United_States_v._Microsoft_Corp." title="United States v. Microsoft Corp.">United States v. Microsoft Corp.</a></i></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">People</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Tantek_%C3%87elik" title="Tantek Çelik">Tantek Çelik</a></li> <li><a href="/wiki/Thomas_Reardon" title="Thomas Reardon">Thomas Reardon</a></li> <li><a href="/wiki/Dean_Hachamovitch" title="Dean Hachamovitch">Dean Hachamovitch</a></li> <li>Scott Isaacs</li> <li><a href="/wiki/Inori_Aizawa" title="Inori Aizawa">Inori Aizawa</a></li></ul> </div></td></tr><tr><td class="navbox-abovebelow" colspan="2"><div> <ul><li><span class="noviewer" typeof="mw:File"><span title="Category"><img alt="" src="//upload.wikimedia.org/wikipedia/en/thumb/9/96/Symbol_category_class.svg/16px-Symbol_category_class.svg.png" decoding="async" width="16" height="16" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/9/96/Symbol_category_class.svg/23px-Symbol_category_class.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/9/96/Symbol_category_class.svg/31px-Symbol_category_class.svg.png 2x" data-file-width="180" data-file-height="185" /></span></span> <a href="/wiki/Category:Internet_Explorer" title="Category:Internet Explorer">Category</a></li></ul> </div></td></tr></tbody></table></div> <div class="navbox-styles"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236075235"></div><div role="navigation" class="navbox" aria-labelledby="Web_interfaces" style="padding:3px"><table class="nowraplinks mw-collapsible autocollapse navbox-inner" style="border-spacing:0;background:transparent;color:inherit"><tbody><tr><th scope="col" class="navbox-title" colspan="2"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1239400231"><div class="navbar plainlinks hlist navbar-mini"><ul><li class="nv-view"><a href="/wiki/Template:Web_interfaces" title="Template:Web interfaces"><abbr title="View this template">v</abbr></a></li><li class="nv-talk"><a href="/wiki/Template_talk:Web_interfaces" title="Template talk:Web interfaces"><abbr title="Discuss this template">t</abbr></a></li><li class="nv-edit"><a href="/wiki/Special:EditPage/Template:Web_interfaces" title="Special:EditPage/Template:Web interfaces"><abbr title="Edit this template">e</abbr></a></li></ul></div><div id="Web_interfaces" style="font-size:114%;margin:0 4em"><a href="/wiki/Web_API" title="Web API">Web interfaces</a></div></th></tr><tr><td colspan="2" class="navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><td class="navbox-abovebelow" colspan="2" style="font-weight:bold"><div id="Server-side"><a href="/wiki/Server-side" class="mw-redirect" title="Server-side">Server-side</a></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Communication_protocol" title="Communication protocol">Protocols</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/HTTP" title="HTTP">HTTP</a> <ul><li><a href="/wiki/HTTP/2" title="HTTP/2">v2</a></li> <li><a href="/wiki/HTTP/3" title="HTTP/3">v3</a></li> <li><a href="/wiki/HTTPS" title="HTTPS">Encryption</a></li> <li><a href="/wiki/WebDAV" title="WebDAV">WebDAV</a></li></ul></li> <li><a href="/wiki/Common_Gateway_Interface" title="Common Gateway Interface">CGI</a></li> <li><a href="/wiki/Simple_Common_Gateway_Interface" title="Simple Common Gateway Interface">SCGI</a></li> <li><a href="/wiki/FastCGI" title="FastCGI">FCGI</a></li> <li><a href="/wiki/Apache_JServ_Protocol" title="Apache JServ Protocol">AJP</a></li> <li><a href="/wiki/Web_Services_for_Remote_Portlets" title="Web Services for Remote Portlets">WSRP</a></li> <li><a href="/wiki/WebSocket" title="WebSocket">WebSocket</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Server_application_programming_interface" title="Server application programming interface">Server APIs</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Netscape_Server_Application_Programming_Interface" title="Netscape Server Application Programming Interface">C NSAPI</a></li> <li><a href="/wiki/Apache_HTTP_Server#Feature_overview" title="Apache HTTP Server">C ASAPI</a></li> <li><a href="/wiki/Internet_Server_Application_Programming_Interface" title="Internet Server Application Programming Interface">C ISAPI</a></li> <li><a href="/wiki/Active_Server_Pages" title="Active Server Pages">COM ASP</a></li> <li><a href="/wiki/Jakarta_Servlet" title="Jakarta Servlet">Jakarta Servlet</a> <ul><li><a href="/wiki/Web_container" title="Web container">container</a></li></ul></li> <li><a href="/wiki/Open_Web_Interface_for_.NET" title="Open Web Interface for .NET">CLI OWIN</a></li> <li><a href="/wiki/HTTP_handler" title="HTTP handler">ASP.NET Handler</a></li> <li><a href="/wiki/Web_Server_Gateway_Interface" title="Web Server Gateway Interface">Python WSGI</a></li> <li><a href="/wiki/Asynchronous_Server_Gateway_Interface" title="Asynchronous Server Gateway Interface">Python ASGI</a></li> <li><a href="/wiki/Rack_(web_server_interface)" title="Rack (web server interface)">Ruby Rack</a></li> <li><a href="/wiki/JSGI" title="JSGI">JavaScript JSGI</a></li> <li><a href="/wiki/Plack_(software)#PSGI" title="Plack (software)">Perl PSGI</a></li> <li><a href="/wiki/Java_Portlet_Specification" title="Java Portlet Specification">Portlet</a> <ul><li><a href="/wiki/Java_Portlet_Specification" title="Java Portlet Specification">container</a></li></ul></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/List_of_Apache_modules" title="List of Apache modules">Apache modules</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Server_Side_Includes" title="Server Side Includes">mod_include</a></li> <li><a href="/wiki/Mod_jk" class="mw-redirect" title="Mod jk">mod_jk</a></li> <li><a href="/wiki/Mod_lisp" title="Mod lisp">mod_lisp</a></li> <li><a href="/wiki/Mod_mono" title="Mod mono">mod_mono</a></li> <li><a href="/wiki/Mod_parrot" class="mw-redirect" title="Mod parrot">mod_parrot</a></li> <li><a href="/wiki/Mod_perl" title="Mod perl">mod_perl</a></li> <li><a href="/wiki/PHP" title="PHP">mod_php</a></li> <li><a href="/wiki/Mod_proxy" title="Mod proxy">mod_proxy</a></li> <li><a href="/wiki/Mod_python" title="Mod python">mod_python</a></li> <li><a href="/wiki/Mod_wsgi" title="Mod wsgi">mod_wsgi</a></li> <li><a href="/wiki/Mod_ruby" title="Mod ruby">mod_ruby</a></li> <li><a href="/wiki/Phusion_Passenger" title="Phusion Passenger">Phusion Passenger</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Topics</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Web_service" title="Web service">Web service</a> vs. <a href="/wiki/Web_resource" title="Web resource">Web resource</a></li> <li><a href="/wiki/Web-oriented_architecture" title="Web-oriented architecture">WOA</a> vs. <a href="/wiki/Resource-oriented_architecture" title="Resource-oriented architecture">ROA</a></li> <li><a href="/wiki/Open_API" title="Open API">Open API</a></li> <li><a href="/wiki/Webhook" title="Webhook">Webhook</a></li> <li><a href="/wiki/Application_server" title="Application server">Application server</a> <ul><li><a href="/wiki/List_of_application_servers" title="List of application servers">comparison</a></li></ul></li> <li><a href="/wiki/Server-side_scripting" title="Server-side scripting">Scripting</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><td colspan="2" class="navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><td class="navbox-abovebelow" colspan="2" style="font-weight:bold"><div id="Client-side"><a href="/wiki/Client-side" class="mw-redirect" title="Client-side">Client-side</a></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Plug-in_(computing)" title="Plug-in (computing)">Browser APIs</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/NPAPI" title="NPAPI">C NPAPI</a> <ul><li><a href="/wiki/NPAPI#LiveConnect" title="NPAPI">LiveConnect</a></li> <li><a href="/wiki/NPAPI#XPConnect" title="NPAPI">XPConnect</a></li></ul></li> <li><a href="/wiki/NPAPI#NPRuntime" title="NPAPI">C NPRuntime</a></li> <li><a href="/wiki/Google_Native_Client#Pepper" title="Google Native Client">C PPAPI</a> <ul><li><a href="/wiki/Google_Native_Client" title="Google Native Client">NaCl</a></li></ul></li> <li><a href="/wiki/ActiveX" title="ActiveX">ActiveX</a></li> <li><a class="mw-selflink selflink">BHO</a></li> <li><a href="/wiki/XAML_Browser_Applications" title="XAML Browser Applications">XBAP</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Web_API#Client_side" title="Web API">Web APIs</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/WHATWG" title="WHATWG">WHATWG</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/HTML_audio" title="HTML audio">Audio</a></li> <li><a href="/wiki/Canvas_element" title="Canvas element">Canvas</a></li> <li><a href="/wiki/Document_Object_Model" title="Document Object Model">DOM</a></li> <li><a href="/wiki/Server-sent_events" title="Server-sent events">SSE</a></li> <li><a href="/wiki/HTML_video" title="HTML video">Video</a></li> <li><a href="/wiki/WebSocket" title="WebSocket">WebSockets</a></li> <li><a href="/wiki/Web_Messaging" title="Web Messaging">Web messaging</a></li> <li><a href="/wiki/Web_storage" title="Web storage">Web storage</a></li> <li><a href="/wiki/Web_worker" title="Web worker">Web worker</a></li> <li><a href="/wiki/XMLHttpRequest" title="XMLHttpRequest">XMLHttpRequest</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/World_Wide_Web_Consortium" title="World Wide Web Consortium">W3C</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/DOM_event" title="DOM event">DOM events</a></li> <li><a href="/wiki/Encrypted_Media_Extensions" title="Encrypted Media Extensions">EME</a></li> <li><a href="/wiki/HTML5_File_API" title="HTML5 File API">File</a></li> <li><a href="/wiki/W3C_Geolocation_API" title="W3C Geolocation API">Geolocation</a></li> <li><a href="/wiki/Indexed_Database_API" title="Indexed Database API">IndexedDB</a></li> <li><a href="/wiki/Media_Source_Extensions" title="Media Source Extensions">MSE</a></li> <li><a href="/wiki/SVG" title="SVG">SVG</a></li> <li><a href="/wiki/WebAssembly" title="WebAssembly">WebAssembly</a></li> <li><a href="/wiki/WebAuthn" title="WebAuthn">WebAuthn</a></li> <li><a href="/wiki/WebGPU" title="WebGPU">WebGPU</a></li> <li><a href="/wiki/WebRTC" title="WebRTC">WebRTC</a></li> <li><a href="/wiki/WebXR" title="WebXR">WebXR</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Khronos_Group" title="Khronos Group">Khronos</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/WebCL" title="WebCL">WebCL</a></li> <li><a href="/wiki/WebGL" title="WebGL">WebGL</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Others</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Gears_(software)" title="Gears (software)">Gears</a></li> <li><a href="/wiki/Web_SQL_Database" title="Web SQL Database">Web SQL Database</a> (formerly W3C)</li> <li><a href="/wiki/WebUSB" title="WebUSB">WebUSB</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Topics</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Ajax_(programming)" title="Ajax (programming)">Ajax</a> and <a href="/wiki/Remote_scripting" title="Remote scripting">Remote scripting</a> vs. <a href="/wiki/Dynamic_HTML" title="Dynamic HTML">DHTML</a></li> <li><a href="/wiki/Browser_extension" title="Browser extension">Browser extension</a></li> <li><a href="/wiki/Cross-site_scripting" title="Cross-site scripting">Cross-site scripting</a> and <a href="/wiki/Cross-origin_resource_sharing" title="Cross-origin resource sharing">CORS</a></li> <li><a href="/wiki/Hydration_(web_development)" title="Hydration (web development)">Hydration</a></li> <li><a href="/wiki/Mashup_(web_application_hybrid)" title="Mashup (web application hybrid)">Mashup</a></li> <li><a href="/wiki/Client-side_persistent_data" title="Client-side persistent data">Persistent data</a></li> <li><a href="/wiki/Web_IDL" title="Web IDL">Web IDL</a></li> <li><a href="/wiki/Dynamic_web_page#Client-side_scripting" title="Dynamic web page">Scripting</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><td colspan="2" class="navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><td class="navbox-abovebelow" colspan="2"><div id="Related_topics">Related topics</div></td></tr><tr><td colspan="2" class="navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Frontend_and_backend" title="Frontend and backend">Frontend and backend</a></li> <li><a href="/wiki/Microservices" title="Microservices">Microservices</a> <ul><li><a href="/wiki/REST" title="REST">REST</a></li> <li><a href="/wiki/GraphQL" title="GraphQL">GraphQL</a></li></ul></li> <li><a href="/wiki/Push_technology" title="Push technology">Push technology</a></li> <li><a href="/wiki/Solution_stack" title="Solution stack">Solution stack</a></li> <li><a href="/wiki/Web_page" title="Web page">Web page</a> <ul><li><a href="/wiki/Static_web_page" title="Static web page">Static</a></li> <li><a href="/wiki/Dynamic_web_page" title="Dynamic web page">Dynamic</a></li></ul></li> <li><a href="/wiki/Web_standards" title="Web standards">Web standards</a></li> <li><a href="/wiki/Web_API_security" title="Web API security">Web API security</a></li> <li><a href="/wiki/Web_application" title="Web application">Web application</a> <ul><li><a href="/wiki/Rich_Internet_Application" title="Rich Internet Application">Rich</a></li> <li><a href="/wiki/Single-page_application" title="Single-page application">Single-page</a></li> <li><a href="/wiki/Progressive_web_app" title="Progressive web app">Progressive</a></li></ul></li> <li><a href="/wiki/Web_framework" title="Web framework">Web framework</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr></tbody></table></div>    </div><noscript><img src="https://login.wikimedia.org/wiki/Special:CentralAutoLogin/start?type=1x1" alt="" width="1" height="1" style="border: none; position: absolute;"></noscript> <div class="printfooter" data-nosnippet="">Retrieved from "<a dir="ltr" href="https://en.wikipedia.org/w/index.php?title=Browser_Helper_Object&oldid=1223422626">https://en.wikipedia.org/w/index.php?title=Browser_Helper_Object&oldid=1223422626</a>"</div></div> <div id="catlinks" class="catlinks" data-mw="interface"><div id="mw-normal-catlinks" class="mw-normal-catlinks"><a href="/wiki/Help:Category" title="Help:Category">Category</a>: <ul><li><a href="/wiki/Category:Internet_Explorer" title="Category:Internet Explorer">Internet Explorer</a></li></ul></div><div id="mw-hidden-catlinks" class="mw-hidden-catlinks mw-hidden-cats-hidden">Hidden categories: <ul><li><a href="/wiki/Category:Articles_with_short_description" title="Category:Articles with short description">Articles with short description</a></li><li><a href="/wiki/Category:Short_description_is_different_from_Wikidata" title="Category:Short description is different from Wikidata">Short description is different from Wikidata</a></li><li><a href="/wiki/Category:All_articles_with_unsourced_statements" title="Category:All articles with unsourced statements">All articles with unsourced statements</a></li><li><a href="/wiki/Category:Articles_with_unsourced_statements_from_May_2021" title="Category:Articles with unsourced statements from May 2021">Articles with unsourced statements from May 2021</a></li><li><a href="/wiki/Category:Webarchive_template_wayback_links" title="Category:Webarchive template wayback links">Webarchive template wayback links</a></li></ul></div></div> </div> </main> </div> <div class="mw-footer-container"> <footer id="footer" class="mw-footer" > <ul id="footer-info"> <li id="footer-info-lastmod"> This page was last edited on 12 May 2024, at 00:58<span class="anonymous-show"> (UTC)</span>.</li> <li id="footer-info-copyright">Text is available under the <a href="/wiki/Wikipedia:Text_of_the_Creative_Commons_Attribution-ShareAlike_4.0_International_License" title="Wikipedia:Text of the Creative Commons Attribution-ShareAlike 4.0 International License">Creative Commons Attribution-ShareAlike 4.0 License</a>; additional terms may apply. By using this site, you agree to the <a href="https://foundation.wikimedia.org/wiki/Special:MyLanguage/Policy:Terms_of_Use" class="extiw" title="foundation:Special:MyLanguage/Policy:Terms of Use">Terms of Use</a> and <a href="https://foundation.wikimedia.org/wiki/Special:MyLanguage/Policy:Privacy_policy" class="extiw" title="foundation:Special:MyLanguage/Policy:Privacy policy">Privacy Policy</a>. Wikipedia® is a registered trademark of the <a rel="nofollow" class="external text" href="https://wikimediafoundation.org/">Wikimedia Foundation, Inc.</a>, a non-profit organization.</li> </ul> <ul id="footer-places"> <li id="footer-places-privacy"><a href="https://foundation.wikimedia.org/wiki/Special:MyLanguage/Policy:Privacy_policy">Privacy policy</a></li> <li id="footer-places-about"><a href="/wiki/Wikipedia:About">About Wikipedia</a></li> <li id="footer-places-disclaimers"><a href="/wiki/Wikipedia:General_disclaimer">Disclaimers</a></li> <li id="footer-places-contact"><a href="//en.wikipedia.org/wiki/Wikipedia:Contact_us">Contact Wikipedia</a></li> <li id="footer-places-wm-codeofconduct"><a href="https://foundation.wikimedia.org/wiki/Special:MyLanguage/Policy:Universal_Code_of_Conduct">Code of Conduct</a></li> <li id="footer-places-developers"><a href="https://developer.wikimedia.org">Developers</a></li> <li id="footer-places-statslink"><a href="https://stats.wikimedia.org/#/en.wikipedia.org">Statistics</a></li> <li id="footer-places-cookiestatement"><a href="https://foundation.wikimedia.org/wiki/Special:MyLanguage/Policy:Cookie_statement">Cookie statement</a></li> <li id="footer-places-mobileview"><a href="//en.m.wikipedia.org/w/index.php?title=Browser_Helper_Object&mobileaction=toggle_view_mobile" class="noprint stopMobileRedirectToggle">Mobile view</a></li> </ul> <ul id="footer-icons" class="noprint"> <li id="footer-copyrightico"><a href="https://wikimediafoundation.org/" class="cdx-button cdx-button--fake-button cdx-button--size-large cdx-button--fake-button--enabled"><img src="/static/images/footer/wikimedia-button.svg" width="84" height="29" alt="Wikimedia Foundation" loading="lazy"></a></li> <li id="footer-poweredbyico"><a href="https://www.mediawiki.org/" class="cdx-button cdx-button--fake-button cdx-button--size-large cdx-button--fake-button--enabled"><img src="/w/resources/assets/poweredby_mediawiki.svg" alt="Powered by MediaWiki" width="88" height="31" loading="lazy"></a></li> </ul> </footer> </div> </div> </div> <div class="vector-settings" id="p-dock-bottom"> <ul></ul> </div><script>(RLQ=window.RLQ||[]).push(function(){mw.config.set({"wgHostname":"mw-web.codfw.main-f69cdc8f6-828bf","wgBackendResponseTime":136,"wgPageParseReport":{"limitreport":{"cputime":"0.439","walltime":"0.568","ppvisitednodes":{"value":1283,"limit":1000000},"postexpandincludesize":{"value":93769,"limit":2097152},"templateargumentsize":{"value":1145,"limit":2097152},"expansiondepth":{"value":15,"limit":100},"expensivefunctioncount":{"value":2,"limit":500},"unstrip-depth":{"value":1,"limit":20},"unstrip-size":{"value":43504,"limit":5000000},"entityaccesscount":{"value":0,"limit":400},"timingprofile":["100.00% 443.853 1 -total"," 29.24% 129.767 5 Template:Navbox"," 24.62% 109.296 1 Template:Information_security"," 19.15% 85.001 1 Template:Short_description"," 13.23% 58.712 1 Template:Cite_web"," 12.46% 55.295 1 Template:ISBN"," 10.56% 46.890 1 Template:Catalog_lookup_link"," 9.73% 43.187 2 Template:Pagetype"," 9.27% 41.124 1 Template:Cn"," 7.70% 34.196 1 Template:Fix"]},"scribunto":{"limitreport-timeusage":{"value":"0.245","limit":"10.000"},"limitreport-memusage":{"value":5225253,"limit":52428800}},"cachereport":{"origin":"mw-web.codfw.main-f69cdc8f6-mf4ts","timestamp":"20241122141810","ttl":2592000,"transientcontent":false}}});});</script> <script type="application/ld+json">{"@context":"https:\/\/schema.org","@type":"Article","name":"Browser Helper Object","url":"https:\/\/en.wikipedia.org\/wiki\/Browser_Helper_Object","sameAs":"http:\/\/www.wikidata.org\/entity\/Q991335","mainEntity":"http:\/\/www.wikidata.org\/entity\/Q991335","author":{"@type":"Organization","name":"Contributors to Wikimedia projects"},"publisher":{"@type":"Organization","name":"Wikimedia Foundation, Inc.","logo":{"@type":"ImageObject","url":"https:\/\/www.wikimedia.org\/static\/images\/wmf-hor-googpub.png"}},"datePublished":"2004-08-19T00:06:50Z","dateModified":"2024-05-12T00:58:19Z","image":"https:\/\/upload.wikimedia.org\/wikipedia\/en\/c\/c7\/Am_addon_manager.png","headline":"DLL module designed as a plugin for Microsoft's Internet Explorer web browser to provide added functionality"}</script> </body> </html>