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>Eavesdropping - 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":"f1df7ecb-ab29-486b-9866-c8e9a78ed767","wgCanonicalNamespace":"","wgCanonicalSpecialPageName":false,"wgNamespaceNumber":0,"wgPageName":"Eavesdropping","wgTitle":"Eavesdropping","wgCurRevisionId":1243328136,"wgRevisionId":1243328136,"wgArticleId":372656,"wgIsArticle":true,"wgIsRedirect":false,"wgAction":"view","wgUserName":null,"wgUserGroups":["*"],"wgCategories":["All articles with incomplete citations","Articles with incomplete citations from June 2014","Articles with short description","Short description is different from Wikidata","Use mdy dates from September 2023","Commons category link is on Wikidata","Espionage techniques","Fiction","Plot (narrative)"],"wgPageViewLanguage":"en","wgPageContentLanguage":"en","wgPageContentModel":"wikitext","wgRelevantPageName":"Eavesdropping","wgRelevantArticleId":372656,"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":7000,"wgRelatedArticlesCompat":[],"wgCentralAuthMobileDomain":false,"wgEditSubmitButtonLabelPublish":true,"wgULSPosition":"interlanguage","wgULSisCompactLinksEnabled":false,"wgVector2022LanguageInHeader":true,"wgULSisLanguageSelectorEmpty":false,"wgWikibaseItemId":"Q320769","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.quicksurveys.init","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/commons/thumb/7/7b/Henri_Adolphe_Laissement_Kardin%C3%A4le_im_Vorzimmer_1895.jpg/1200px-Henri_Adolphe_Laissement_Kardin%C3%A4le_im_Vorzimmer_1895.jpg"> <meta property="og:image:width" content="1200"> <meta property="og:image:height" content="914"> <meta property="og:image" content="https://upload.wikimedia.org/wikipedia/commons/thumb/7/7b/Henri_Adolphe_Laissement_Kardin%C3%A4le_im_Vorzimmer_1895.jpg/800px-Henri_Adolphe_Laissement_Kardin%C3%A4le_im_Vorzimmer_1895.jpg"> <meta property="og:image:width" content="800"> <meta property="og:image:height" content="610"> <meta property="og:image" content="https://upload.wikimedia.org/wikipedia/commons/thumb/7/7b/Henri_Adolphe_Laissement_Kardin%C3%A4le_im_Vorzimmer_1895.jpg/640px-Henri_Adolphe_Laissement_Kardin%C3%A4le_im_Vorzimmer_1895.jpg"> <meta property="og:image:width" content="640"> <meta property="og:image:height" content="488"> <meta name="viewport" content="width=1120"> <meta property="og:title" content="Eavesdropping - 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/Eavesdropping"> <link rel="alternate" type="application/x-wiki" title="Edit this page" href="/w/index.php?title=Eavesdropping&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/Eavesdropping"> <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-Eavesdropping rootpage-Eavesdropping 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=Eavesdropping" 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=Eavesdropping" 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=Eavesdropping" 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=Eavesdropping" 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-Etymology" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Etymology"> <div class="vector-toc-text"> <span class="vector-toc-numb">1</span> <span>Etymology</span> </div> </a> <ul id="toc-Etymology-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Techniques" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Techniques"> <div class="vector-toc-text"> <span class="vector-toc-numb">2</span> <span>Techniques</span> </div> </a> <ul id="toc-Techniques-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Network_attacks" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Network_attacks"> <div class="vector-toc-text"> <span class="vector-toc-numb">3</span> <span>Network attacks</span> </div> </a> <ul id="toc-Network_attacks-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Security" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Security"> <div class="vector-toc-text"> <span class="vector-toc-numb">4</span> <span>Security</span> </div> </a> <ul id="toc-Security-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">5</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">6</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">7</span> <span>External links</span> </div> </a> <ul id="toc-External_links-sublist" class="vector-toc-list"> </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">Eavesdropping</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 24 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-24" 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">24 languages</span> </label> <div class="vector-dropdown-content"> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="interlanguage-link interwiki-ar mw-list-item"><a href="https://ar.wikipedia.org/wiki/%D8%AA%D9%86%D8%B5%D8%AA" title="تنصت – Arabic" lang="ar" hreflang="ar" data-title="تنصت" data-language-autonym="العربية" data-language-local-name="Arabic" class="interlanguage-link-target"><span>العربية</span></a></li><li class="interlanguage-link interwiki-de mw-list-item"><a href="https://de.wikipedia.org/wiki/Abh%C3%B6ren" title="Abhören – German" lang="de" hreflang="de" data-title="Abhören" data-language-autonym="Deutsch" data-language-local-name="German" class="interlanguage-link-target"><span>Deutsch</span></a></li><li class="interlanguage-link interwiki-el mw-list-item"><a href="https://el.wikipedia.org/wiki/%CE%9B%CE%B1%CE%B8%CF%81%CE%B1%CE%BA%CF%81%CF%8C%CE%B1%CF%83%CE%B7" title="Λαθρακρόαση – Greek" lang="el" hreflang="el" data-title="Λαθρακρόαση" data-language-autonym="Ελληνικά" data-language-local-name="Greek" class="interlanguage-link-target"><span>Ελληνικά</span></a></li><li class="interlanguage-link interwiki-es mw-list-item"><a href="https://es.wikipedia.org/wiki/Eavesdropping" title="Eavesdropping – Spanish" lang="es" hreflang="es" data-title="Eavesdropping" data-language-autonym="Español" data-language-local-name="Spanish" class="interlanguage-link-target"><span>Español</span></a></li><li class="interlanguage-link interwiki-fa mw-list-item"><a href="https://fa.wikipedia.org/wiki/%D8%B4%D9%86%D9%88%D8%AF" title="شنود – Persian" lang="fa" hreflang="fa" data-title="شنود" data-language-autonym="فارسی" data-language-local-name="Persian" class="interlanguage-link-target"><span>فارسی</span></a></li><li class="interlanguage-link interwiki-fr mw-list-item"><a href="https://fr.wikipedia.org/wiki/%C3%89coute_clandestine" title="Écoute clandestine – French" lang="fr" hreflang="fr" data-title="Écoute clandestine" data-language-autonym="Français" data-language-local-name="French" class="interlanguage-link-target"><span>Français</span></a></li><li class="interlanguage-link interwiki-ko mw-list-item"><a href="https://ko.wikipedia.org/wiki/%EA%B0%90%EC%B2%AD" title="감청 – Korean" lang="ko" hreflang="ko" data-title="감청" data-language-autonym="한국어" data-language-local-name="Korean" class="interlanguage-link-target"><span>한국어</span></a></li><li class="interlanguage-link interwiki-hy mw-list-item"><a href="https://hy.wikipedia.org/wiki/%D4%B3%D5%A1%D5%B2%D5%BF%D5%B6%D5%A1%D5%AC%D5%BD%D5%B8%D6%82%D5%B4" title="Գաղտնալսում – Armenian" lang="hy" hreflang="hy" data-title="Գաղտնալսում" data-language-autonym="Հայերեն" data-language-local-name="Armenian" class="interlanguage-link-target"><span>Հայերեն</span></a></li><li class="interlanguage-link interwiki-hi mw-list-item"><a href="https://hi.wikipedia.org/wiki/%E0%A4%88%E0%A4%B5%E0%A5%8D%E0%A4%B8%E0%A4%A1%E0%A5%8D%E0%A4%B0%E0%A5%89%E0%A4%AA%E0%A4%BF%E0%A4%82%E0%A4%97_(%E0%A4%9A%E0%A5%8B%E0%A4%B0%E0%A5%80_%E0%A4%9B%E0%A5%81%E0%A4%AA%E0%A5%87_%E0%A4%B8%E0%A5%81%E0%A4%A8%E0%A4%A8%E0%A4%BE)" title="ईव्सड्रॉपिंग (चोरी छुपे सुनना) – Hindi" lang="hi" hreflang="hi" data-title="ईव्सड्रॉपिंग (चोरी छुपे सुनना)" data-language-autonym="हिन्दी" data-language-local-name="Hindi" class="interlanguage-link-target"><span>हिन्दी</span></a></li><li class="interlanguage-link interwiki-id mw-list-item"><a href="https://id.wikipedia.org/wiki/Menguping" title="Menguping – Indonesian" lang="id" hreflang="id" data-title="Menguping" data-language-autonym="Bahasa Indonesia" data-language-local-name="Indonesian" class="interlanguage-link-target"><span>Bahasa Indonesia</span></a></li><li class="interlanguage-link interwiki-he mw-list-item"><a href="https://he.wikipedia.org/wiki/%D7%94%D7%90%D7%96%D7%A0%D7%AA_%D7%A1%D7%AA%D7%A8" title="האזנת סתר – Hebrew" lang="he" hreflang="he" data-title="האזנת סתר" data-language-autonym="עברית" data-language-local-name="Hebrew" class="interlanguage-link-target"><span>עברית</span></a></li><li class="interlanguage-link interwiki-ml mw-list-item"><a href="https://ml.wikipedia.org/wiki/%E0%B4%92%E0%B4%B3%E0%B4%BF%E0%B4%9E%E0%B5%8D%E0%B4%9E%E0%B5%81%E0%B4%95%E0%B5%87%E0%B5%BE%E0%B4%95%E0%B5%8D%E0%B4%95%E0%B5%BD" title="ഒളിഞ്ഞുകേൾക്കൽ – Malayalam" lang="ml" hreflang="ml" data-title="ഒളിഞ്ഞുകേൾക്കൽ" 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/%E7%9B%97%E8%81%B4" title="盗聴 – Japanese" lang="ja" hreflang="ja" data-title="盗聴" 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-no mw-list-item"><a href="https://no.wikipedia.org/wiki/Tyvlytting" title="Tyvlytting – Norwegian Bokmål" lang="nb" hreflang="nb" data-title="Tyvlytting" data-language-autonym="Norsk bokmål" data-language-local-name="Norwegian Bokmål" class="interlanguage-link-target"><span>Norsk bokmål</span></a></li><li class="interlanguage-link interwiki-nn mw-list-item"><a href="https://nn.wikipedia.org/wiki/Tjuvlytting" title="Tjuvlytting – Norwegian Nynorsk" lang="nn" hreflang="nn" data-title="Tjuvlytting" data-language-autonym="Norsk nynorsk" data-language-local-name="Norwegian Nynorsk" class="interlanguage-link-target"><span>Norsk nynorsk</span></a></li><li class="interlanguage-link interwiki-pa mw-list-item"><a href="https://pa.wikipedia.org/wiki/%E0%A8%88%E0%A8%B5%E0%A8%B8%E0%A8%A1%E0%A9%8D%E0%A8%B0%E0%A9%8C%E0%A8%AA%E0%A8%BF%E0%A9%B0%E0%A8%97" title="ਈਵਸਡ੍ਰੌਪਿੰਗ – Punjabi" lang="pa" hreflang="pa" data-title="ਈਵਸਡ੍ਰੌਪਿੰਗ" data-language-autonym="ਪੰਜਾਬੀ" data-language-local-name="Punjabi" class="interlanguage-link-target"><span>ਪੰਜਾਬੀ</span></a></li><li class="interlanguage-link interwiki-pt mw-list-item"><a href="https://pt.wikipedia.org/wiki/Escutas" title="Escutas – Portuguese" lang="pt" hreflang="pt" data-title="Escutas" data-language-autonym="Português" data-language-local-name="Portuguese" class="interlanguage-link-target"><span>Português</span></a></li><li class="interlanguage-link interwiki-sq mw-list-item"><a href="https://sq.wikipedia.org/wiki/P%C3%ABrgjimi" title="Përgjimi – Albanian" lang="sq" hreflang="sq" data-title="Përgjimi" data-language-autonym="Shqip" data-language-local-name="Albanian" class="interlanguage-link-target"><span>Shqip</span></a></li><li class="interlanguage-link interwiki-fi mw-list-item"><a href="https://fi.wikipedia.org/wiki/Salakuuntelu" title="Salakuuntelu – Finnish" lang="fi" hreflang="fi" data-title="Salakuuntelu" data-language-autonym="Suomi" data-language-local-name="Finnish" class="interlanguage-link-target"><span>Suomi</span></a></li><li class="interlanguage-link interwiki-sv mw-list-item"><a href="https://sv.wikipedia.org/wiki/Avlyssning" title="Avlyssning – Swedish" lang="sv" hreflang="sv" data-title="Avlyssning" data-language-autonym="Svenska" data-language-local-name="Swedish" class="interlanguage-link-target"><span>Svenska</span></a></li><li class="interlanguage-link interwiki-tr mw-list-item"><a href="https://tr.wikipedia.org/wiki/Eavesdropping" title="Eavesdropping – Turkish" lang="tr" hreflang="tr" data-title="Eavesdropping" data-language-autonym="Türkçe" data-language-local-name="Turkish" class="interlanguage-link-target"><span>Türkçe</span></a></li><li class="interlanguage-link interwiki-uk mw-list-item"><a href="https://uk.wikipedia.org/wiki/%D0%9F%D1%96%D0%B4%D1%81%D0%BB%D1%83%D1%85%D0%BE%D0%B2%D1%83%D0%B2%D0%B0%D0%BD%D0%BD%D1%8F" title="Підслуховування – Ukrainian" lang="uk" hreflang="uk" data-title="Підслуховування" data-language-autonym="Українська" data-language-local-name="Ukrainian" class="interlanguage-link-target"><span>Українська</span></a></li><li class="interlanguage-link interwiki-vi mw-list-item"><a href="https://vi.wikipedia.org/wiki/Nghe_l%C3%A9n" title="Nghe lén – Vietnamese" lang="vi" hreflang="vi" data-title="Nghe lén" data-language-autonym="Tiếng Việt" data-language-local-name="Vietnamese" class="interlanguage-link-target"><span>Tiếng Việt</span></a></li><li class="interlanguage-link interwiki-zh mw-list-item"><a href="https://zh.wikipedia.org/wiki/%E7%AB%8A%E8%81%BD" title="竊聽 – Chinese" lang="zh" hreflang="zh" data-title="竊聽" 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/Q320769#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/Eavesdropping" 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:Eavesdropping" 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/Eavesdropping"><span>Read</span></a></li><li id="ca-edit" class="vector-tab-noicon mw-list-item"><a href="/w/index.php?title=Eavesdropping&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=Eavesdropping&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/Eavesdropping"><span>Read</span></a></li><li id="ca-more-edit" class="vector-more-collapsible-item mw-list-item"><a href="/w/index.php?title=Eavesdropping&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=Eavesdropping&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/Eavesdropping" 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/Eavesdropping" 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=Eavesdropping&oldid=1243328136" 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=Eavesdropping&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=Eavesdropping&id=1243328136&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%2FEavesdropping"><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%2FEavesdropping"><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=Eavesdropping&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=Eavesdropping&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 class="wb-otherproject-link wb-otherproject-commons mw-list-item"><a href="https://commons.wikimedia.org/wiki/Category:Eavesdropping" hreflang="en"><span>Wikimedia Commons</span></a></li><li id="t-wikibase" class="wb-otherproject-link wb-otherproject-wikibase-dataitem mw-list-item"><a href="https://www.wikidata.org/wiki/Special:EntityPage/Q320769" 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">Act of secretly listening to the private conversation of others</div> <style data-mw-deduplicate="TemplateStyles:r1236090951">.mw-parser-output .hatnote{font-style:italic}.mw-parser-output div.hatnote{padding-left:1.6em;margin-bottom:0.5em}.mw-parser-output .hatnote i{font-style:normal}.mw-parser-output .hatnote+link+.hatnote{margin-top:-0.5em}@media print{body.ns-0 .mw-parser-output .hatnote{display:none!important}}</style><div role="note" class="hatnote navigation-not-searchable">"Eavesdrop" redirects here. For water dripping from eaves, see <a href="/wiki/Eavesdrip" title="Eavesdrip">Eavesdrip</a>.</div> <p class="mw-empty-elt"> </p> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Henri_Adolphe_Laissement_Kardin%C3%A4le_im_Vorzimmer_1895.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/7/7b/Henri_Adolphe_Laissement_Kardin%C3%A4le_im_Vorzimmer_1895.jpg/300px-Henri_Adolphe_Laissement_Kardin%C3%A4le_im_Vorzimmer_1895.jpg" decoding="async" width="300" height="229" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/7/7b/Henri_Adolphe_Laissement_Kardin%C3%A4le_im_Vorzimmer_1895.jpg/450px-Henri_Adolphe_Laissement_Kardin%C3%A4le_im_Vorzimmer_1895.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/7/7b/Henri_Adolphe_Laissement_Kardin%C3%A4le_im_Vorzimmer_1895.jpg/600px-Henri_Adolphe_Laissement_Kardin%C3%A4le_im_Vorzimmer_1895.jpg 2x" data-file-width="8102" data-file-height="6174" /></a><figcaption><a href="/wiki/Cardinal_(Catholicism)" class="mw-redirect" title="Cardinal (Catholicism)">Cardinals</a> eavesdropping in the <a href="/wiki/Vatican_City" title="Vatican City">Vatican</a>. A painting by <a href="/w/index.php?title=Henri_Adolphe_Laissement&action=edit&redlink=1" class="new" title="Henri Adolphe Laissement (page does not exist)">Henri Adolphe Laissement</a><span class="noprint" style="font-size:85%; font-style: normal;"> [<a href="https://fr.wikipedia.org/wiki/Henri_Adolphe_Laissement" class="extiw" title="fr:Henri Adolphe Laissement">fr</a>]</span>, 1895</figcaption></figure> <p><b>Eavesdropping</b> is the act of secretly or stealthily listening to the private conversation or communications of others without their consent in order to gather information. </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="Etymology">Etymology</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Eavesdropping&action=edit&section=1" title="Edit section: Etymology"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>The verb <i>eavesdrop</i> is a back-formation from the noun <i>eavesdropper</i> ("a person who eavesdrops"), which was formed from the related noun <i>eavesdrop</i> ("the dripping of water from the <a href="/wiki/Eaves" title="Eaves">eaves</a> of a house; the ground on which such water falls").<sup id="cite_ref-:0_1-0" class="reference"><a href="#cite_note-:0-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> </p><p>An eavesdropper was someone who would hang from the <a href="/wiki/Eave" class="mw-redirect" title="Eave">eave</a> of a building so as to hear what is said within. The <a href="/wiki/PBS" title="PBS">PBS</a> documentaries <i>Inside the Court of Henry VIII</i> (April 8, 2015)<sup id="cite_ref-auto_2-0" class="reference"><a href="#cite_note-auto-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> and <i>Secrets of Henry VIII’s Palace</i> (June 30, 2013) include segments that display and discuss "eavedrops", carved wooden figures <a href="/wiki/Henry_VIII" title="Henry VIII">Henry VIII</a> had built into the <a href="/wiki/Eaves" title="Eaves">eaves</a> (overhanging edges of the beams in the ceiling) of <a href="/wiki/Hampton_Court" class="mw-redirect" title="Hampton Court">Hampton Court</a> to discourage unwanted gossip or dissension from the King's wishes and rule, to foment paranoia and fear,<sup id="cite_ref-auto_2-1" class="reference"><a href="#cite_note-auto-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> and demonstrate that everything said there was being overheard; literally, that the walls had ears.<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> <div class="mw-heading mw-heading2"><h2 id="Techniques">Techniques</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Eavesdropping&action=edit&section=2" title="Edit section: Techniques"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Eavesdropping vectors include <a href="/wiki/Telephone" title="Telephone">telephone</a> lines, <a href="/wiki/Cellular_network" title="Cellular network">cellular networks</a>, <a href="/wiki/Email" title="Email">email</a>, and other methods of private instant messaging. Devices that support <a href="/wiki/VoIP" class="mw-redirect" title="VoIP">VoIP</a> and other communication software are also vulnerable to electronic eavesdropping by computer viruses categorized as <a href="/wiki/Trojan_horse_(computing)" title="Trojan horse (computing)">trojan</a> viruses or more broadly as <a href="/wiki/Spyware" title="Spyware">spyware</a>.<sup id="cite_ref-:1_4-0" class="reference"><a href="#cite_note-:1-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="Network_attacks">Network attacks</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Eavesdropping&action=edit&section=3" title="Edit section: Network attacks"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p><a href="/wiki/Network_eavesdropping" title="Network eavesdropping">Network eavesdropping</a> is a network layer attack that focuses on capturing small <i>packets</i> from the network transmitted by other computers and reading the data content in search of any type of information.<sup id="cite_ref-5" class="reference"><a href="#cite_note-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup> This type of network attack is generally one of the most effective as a lack of <a href="/wiki/Encryption" title="Encryption">encryption</a> services are used and when the connection between the two endpoints are weak and not secure.<sup id="cite_ref-6" class="reference"><a href="#cite_note-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-7" class="reference"><a href="#cite_note-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup> It is also linked to the collection of <a href="/wiki/Metadata" title="Metadata">metadata</a>. </p> <div class="mw-heading mw-heading2"><h2 id="Security">Security</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Eavesdropping&action=edit&section=4" title="Edit section: Security"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>There is a growing importance of security in communication systems, specifically in <a href="/wiki/Wireless" title="Wireless">wireless</a> technology. The need for security measures at different levels, including software encryption, hardware protection (e.g., <a href="/wiki/Trusted_Platform_Module" title="Trusted Platform Module">trusted platform modules</a>), and even the physical layer using wave-front engineering is as crucial than ever.<sup id="cite_ref-8" class="reference"><a href="#cite_note-8"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup> </p><p>Researchers have expressed the importance of addressing the privacy concerns from eavesdropping attacks because they impact the rights of users and the ability to have confidence in the devices as well as the entire <a href="/wiki/Internet" title="Internet">Internet</a>. Ensuring that users have trust and confidence in their Internet activities so users continue to engage actively in the system and share <a href="/wiki/Data" title="Data">data</a>.<sup id="cite_ref-9" class="reference"><a href="#cite_note-9"><span class="cite-bracket">[</span>9<span class="cite-bracket">]</span></a></sup> </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=Eavesdropping&action=edit&section=5" title="Edit section: See also"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r1184024115">.mw-parser-output .div-col{margin-top:0.3em;column-width:30em}.mw-parser-output .div-col-small{font-size:90%}.mw-parser-output .div-col-rules{column-rule:1px solid #aaa}.mw-parser-output .div-col dl,.mw-parser-output .div-col ol,.mw-parser-output .div-col ul{margin-top:0}.mw-parser-output .div-col li,.mw-parser-output .div-col dd{page-break-inside:avoid;break-inside:avoid-column}</style><div class="div-col" style="column-width: 30em;"> <ul><li><a href="/wiki/Cellphone_surveillance" title="Cellphone surveillance">Cellphone surveillance</a></li> <li><a href="/wiki/Computer_surveillance" class="mw-redirect" title="Computer surveillance">Computer surveillance</a></li> <li><a href="/wiki/Covert_listening_device" title="Covert listening device">Covert listening device</a></li> <li><a href="/wiki/ECHELON" title="ECHELON">ECHELON</a></li> <li><a href="/wiki/Espionage" title="Espionage">Espionage</a></li> <li><a href="/wiki/Fiber_tapping" title="Fiber tapping">Fiber tapping</a></li> <li><a href="/wiki/Global_surveillance_disclosures_(2013%E2%80%93present)" class="mw-redirect" title="Global surveillance disclosures (2013–present)">Global surveillance disclosures (2013–present)</a></li> <li><i><a href="/wiki/Katz_v._United_States" title="Katz v. United States">Katz v. United States</a></i> (1967)</li> <li><a href="/wiki/Keystroke_logging" title="Keystroke logging">Keystroke logging</a></li> <li><a href="/wiki/Listening_station" title="Listening station">Listening station</a></li> <li><a href="/wiki/Magic_(cryptography)" title="Magic (cryptography)">Magic (cryptography)</a></li> <li><a href="/wiki/Man-in-the-middle_attack" title="Man-in-the-middle attack">Man-in-the-middle attack</a></li> <li><a href="/wiki/Mass_surveillance" title="Mass surveillance">Mass surveillance</a></li> <li><a href="/wiki/NSA_warrantless_surveillance_controversy" class="mw-redirect" title="NSA warrantless surveillance controversy">NSA warrantless surveillance controversy</a> (December 2005 – 2006)</li> <li><a href="/wiki/Opportunistic_encryption" title="Opportunistic encryption">Opportunistic encryption</a></li> <li><a href="/wiki/Party_line_(telephony)" title="Party line (telephony)">Party line</a></li> <li><a href="/wiki/People_watching" class="mw-redirect" title="People watching">People watching</a></li> <li><a href="/wiki/Privacy" title="Privacy">Privacy</a></li> <li><a href="/wiki/Secure_communication" title="Secure communication">Secure communication</a></li> <li><a href="/wiki/Speke_Hall" title="Speke Hall">Speke Hall</a>, containing a physical eavesdrop for listening to people waiting at the door</li> <li><a href="/wiki/Surveillance" title="Surveillance">Surveillance</a></li> <li><a href="/wiki/Ultra_(cryptography)" title="Ultra (cryptography)">Ultra (cryptography)</a></li> <li><a href="/wiki/Wiretapping" title="Wiretapping">Wiretapping</a></li></ul> </div> <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=Eavesdropping&action=edit&section=6" title="Edit section: References"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r1239543626">.mw-parser-output .reflist{margin-bottom:0.5em;list-style-type:decimal}@media screen{.mw-parser-output .reflist{font-size:90%}}.mw-parser-output .reflist .references{font-size:100%;margin-bottom:0;list-style-type:inherit}.mw-parser-output .reflist-columns-2{column-width:30em}.mw-parser-output .reflist-columns-3{column-width:25em}.mw-parser-output .reflist-columns{margin-top:0.3em}.mw-parser-output .reflist-columns ol{margin-top:0}.mw-parser-output .reflist-columns li{page-break-inside:avoid;break-inside:avoid-column}.mw-parser-output .reflist-upper-alpha{list-style-type:upper-alpha}.mw-parser-output .reflist-upper-roman{list-style-type:upper-roman}.mw-parser-output .reflist-lower-alpha{list-style-type:lower-alpha}.mw-parser-output .reflist-lower-greek{list-style-type:lower-greek}.mw-parser-output .reflist-lower-roman{list-style-type:lower-roman}</style><div class="reflist"> <div class="mw-references-wrap"><ol class="references"> <li id="cite_note-:0-1"><span class="mw-cite-backlink"><b><a href="#cite_ref-:0_1-0">^</a></b></span> <span class="reference-text"><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><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://web.archive.org/web/20170811143412/https://en.oxforddictionaries.com/definition/eavesdrop">"eavesdrop – Definition of eavesdrop in English by Oxford Dictionaries"</a>. <i>Oxford Dictionaries – English</i>. Archived from <a rel="nofollow" class="external text" href="https://en.oxforddictionaries.com/definition/eavesdrop">the original</a> on August 11, 2017<span class="reference-accessdate">. Retrieved <span class="nowrap">September 10,</span> 2023</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Oxford+Dictionaries+%E2%80%93+English&rft.atitle=eavesdrop+%E2%80%93+Definition+of+eavesdrop+in+English+by+Oxford+Dictionaries&rft_id=https%3A%2F%2Fen.oxforddictionaries.com%2Fdefinition%2Feavesdrop&rfr_id=info%3Asid%2Fen.wikipedia.org%3AEavesdropping" class="Z3988"></span></span> </li> <li id="cite_note-auto-2"><span class="mw-cite-backlink">^ <a href="#cite_ref-auto_2-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-auto_2-1"><sup><i><b>b</b></i></sup></a></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation book cs1"><a rel="nofollow" class="external text" href="https://www.pbs.org/program/inside-court-henry-viii/"><i>Inside the Court of Henry VIII</i></a>. Public Broadcasting Service. April 8, 2016.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Inside+the+Court+of+Henry+VIII&rft.pub=Public+Broadcasting+Service&rft.date=2016-04-08&rft_id=https%3A%2F%2Fwww.pbs.org%2Fprogram%2Finside-court-henry-viii%2F&rfr_id=info%3Asid%2Fen.wikipedia.org%3AEavesdropping" 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="CITEREFStollznow,_Karen2014" class="citation web cs1"><a href="/wiki/Karen_Stollznow" title="Karen Stollznow">Stollznow, Karen</a> (August 7, 2014). <a rel="nofollow" class="external text" href="https://web.archive.org/web/20180728181842/http://karenstollznow.com/eavesdropping/">"Eavesdropping: etymology, meaning, and some creepy little statues"</a>. <i>KarenStollznow.com</i>. Archived from <a rel="nofollow" class="external text" href="http://karenstollznow.com/eavesdropping/">the original</a> on July 28, 2018<span class="reference-accessdate">. Retrieved <span class="nowrap">June 23,</span> 2016</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=KarenStollznow.com&rft.atitle=Eavesdropping%3A+etymology%2C+meaning%2C+and+some+creepy+little+statues&rft.date=2014-08-07&rft.au=Stollznow%2C+Karen&rft_id=http%3A%2F%2Fkarenstollznow.com%2Feavesdropping%2F&rfr_id=info%3Asid%2Fen.wikipedia.org%3AEavesdropping" class="Z3988"></span></span> </li> <li id="cite_note-:1-4"><span class="mw-cite-backlink"><b><a href="#cite_ref-:1_4-0">^</a></b></span> <span class="reference-text">Garner, p. 550<sup class="noprint Inline-Template" style="white-space:nowrap;">[<i><a href="/wiki/Wikipedia:Citing_sources#What_information_to_include" title="Wikipedia:Citing sources"><span title="A complete citation is needed. (June 2014)">full citation needed</span></a></i>]</sup></span> </li> <li id="cite_note-5"><span class="mw-cite-backlink"><b><a href="#cite_ref-5">^</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://web.archive.org/web/20190927063206/https://vulnerabilities.teammentor.net/article/6a32e2d5-dba5-4f6d-9fe0-a51605fd0557">"TeamMentor 3.5"</a>. <i>vulnerabilities.teammentor.net</i>. Archived from <a rel="nofollow" class="external text" href="https://vulnerabilities.teammentor.net/article/6a32e2d5-dba5-4f6d-9fe0-a51605fd0557">the original</a> on September 27, 2019<span class="reference-accessdate">. Retrieved <span class="nowrap">September 27,</span> 2019</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=vulnerabilities.teammentor.net&rft.atitle=TeamMentor+3.5&rft_id=https%3A%2F%2Fvulnerabilities.teammentor.net%2Farticle%2F6a32e2d5-dba5-4f6d-9fe0-a51605fd0557&rfr_id=info%3Asid%2Fen.wikipedia.org%3AEavesdropping" class="Z3988"></span></span> </li> <li id="cite_note-6"><span class="mw-cite-backlink"><b><a href="#cite_ref-6">^</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://www.fortinet.com/resources/cyberglossary/eavesdropping">"What Are Eavesdropping Attacks?"</a>. <i>Fortinet</i><span class="reference-accessdate">. Retrieved <span class="nowrap">October 2,</span> 2021</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Fortinet&rft.atitle=What+Are+Eavesdropping+Attacks%3F&rft_id=https%3A%2F%2Fwww.fortinet.com%2Fresources%2Fcyberglossary%2Feavesdropping&rfr_id=info%3Asid%2Fen.wikipedia.org%3AEavesdropping" class="Z3988"></span></span> </li> <li id="cite_note-7"><span class="mw-cite-backlink"><b><a href="#cite_ref-7">^</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://enterprise.verizon.com/resources/articles/s/what-are-eavesdropping-attacks/">"What Are Eavesdropping Attacks & How To Prevent Them"</a>. <i>Verizon Enterprise</i><span class="reference-accessdate">. Retrieved <span class="nowrap">May 3,</span> 2024</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Verizon+Enterprise&rft.atitle=What+Are+Eavesdropping+Attacks+%26+How+To+Prevent+Them&rft_id=https%3A%2F%2Fenterprise.verizon.com%2Fresources%2Farticles%2Fs%2Fwhat-are-eavesdropping-attacks%2F&rfr_id=info%3Asid%2Fen.wikipedia.org%3AEavesdropping" class="Z3988"></span></span> </li> <li id="cite_note-8"><span class="mw-cite-backlink"><b><a href="#cite_ref-8">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFMaShresthaAdelbergYeh2018" class="citation journal cs1">Ma, Jianjun; Shrestha, Rabi; Adelberg, Jacob; Yeh, Chia-Yi; Hossain, Zahed; Knightly, Edward; Jornet, Josep Miquel; Mittleman, Daniel M. (November 2018). <a rel="nofollow" class="external text" href="https://www.nature.com/articles/s41586-018-0609-x">"Security and eavesdropping in terahertz wireless links"</a>. <i>Nature</i>. <b>563</b> (7729): 89–93. <a href="/wiki/Bibcode_(identifier)" class="mw-redirect" title="Bibcode (identifier)">Bibcode</a>:<a rel="nofollow" class="external text" href="https://ui.adsabs.harvard.edu/abs/2018Natur.563...89M">2018Natur.563...89M</a>. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1038%2Fs41586-018-0609-x">10.1038/s41586-018-0609-x</a>. <a href="/wiki/ISSN_(identifier)" class="mw-redirect" title="ISSN (identifier)">ISSN</a> <a rel="nofollow" class="external text" href="https://search.worldcat.org/issn/1476-4687">1476-4687</a>. <a href="/wiki/PMID_(identifier)" class="mw-redirect" title="PMID (identifier)">PMID</a> <a rel="nofollow" class="external text" href="https://pubmed.ncbi.nlm.nih.gov/30323288">30323288</a>. <a href="/wiki/S2CID_(identifier)" class="mw-redirect" title="S2CID (identifier)">S2CID</a> <a rel="nofollow" class="external text" href="https://api.semanticscholar.org/CorpusID:53085137">53085137</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Nature&rft.atitle=Security+and+eavesdropping+in+terahertz+wireless+links&rft.volume=563&rft.issue=7729&rft.pages=89-93&rft.date=2018-11&rft_id=https%3A%2F%2Fapi.semanticscholar.org%2FCorpusID%3A53085137%23id-name%3DS2CID&rft_id=info%3Abibcode%2F2018Natur.563...89M&rft.issn=1476-4687&rft_id=info%3Adoi%2F10.1038%2Fs41586-018-0609-x&rft_id=info%3Apmid%2F30323288&rft.aulast=Ma&rft.aufirst=Jianjun&rft.au=Shrestha%2C+Rabi&rft.au=Adelberg%2C+Jacob&rft.au=Yeh%2C+Chia-Yi&rft.au=Hossain%2C+Zahed&rft.au=Knightly%2C+Edward&rft.au=Jornet%2C+Josep+Miquel&rft.au=Mittleman%2C+Daniel+M.&rft_id=https%3A%2F%2Fwww.nature.com%2Farticles%2Fs41586-018-0609-x&rfr_id=info%3Asid%2Fen.wikipedia.org%3AEavesdropping" class="Z3988"></span></span> </li> <li id="cite_note-9"><span class="mw-cite-backlink"><b><a href="#cite_ref-9">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFAnajembaIwendiRazzakAnsere2022" class="citation journal cs1">Anajemba, Joseph Henry; Iwendi, Celestine; Razzak, Imran; Ansere, James Adu; Okpalaoguchi, Izuchukwu Michael (2022). <a rel="nofollow" class="external text" href="https://ieeexplore.ieee.org/document/9669024">"A Counter-Eavesdropping Technique for Optimized Privacy of Wireless Industrial IoT Communications"</a>. <i>IEEE Transactions on Industrial Informatics</i>. <b>18</b> (9): 6445–6454. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1109%2FTII.2021.3140109">10.1109/TII.2021.3140109</a><span class="reference-accessdate">. Retrieved <span class="nowrap">February 9,</span> 2024</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=IEEE+Transactions+on+Industrial+Informatics&rft.atitle=A+Counter-Eavesdropping+Technique+for+Optimized+Privacy+of+Wireless+Industrial+IoT+Communications&rft.volume=18&rft.issue=9&rft.pages=6445-6454&rft.date=2022&rft_id=info%3Adoi%2F10.1109%2FTII.2021.3140109&rft.aulast=Anajemba&rft.aufirst=Joseph+Henry&rft.au=Iwendi%2C+Celestine&rft.au=Razzak%2C+Imran&rft.au=Ansere%2C+James+Adu&rft.au=Okpalaoguchi%2C+Izuchukwu+Michael&rft_id=https%3A%2F%2Fieeexplore.ieee.org%2Fdocument%2F9669024&rfr_id=info%3Asid%2Fen.wikipedia.org%3AEavesdropping" class="Z3988"></span></span> </li> </ol></div></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=Eavesdropping&action=edit&section=7" title="Edit section: External links"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><span class="noviewer" typeof="mw:File"><a href="/wiki/File:Wiktionary-logo-en-v2.svg" class="mw-file-description"><img alt="" src="//upload.wikimedia.org/wikipedia/commons/thumb/9/99/Wiktionary-logo-en-v2.svg/16px-Wiktionary-logo-en-v2.svg.png" decoding="async" width="16" height="16" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/9/99/Wiktionary-logo-en-v2.svg/24px-Wiktionary-logo-en-v2.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/9/99/Wiktionary-logo-en-v2.svg/32px-Wiktionary-logo-en-v2.svg.png 2x" data-file-width="512" data-file-height="512" /></a></span> The dictionary definition of <a href="https://en.wiktionary.org/wiki/eavesdropping" class="extiw" title="wiktionary:eavesdropping"><i>eavesdropping</i></a> at Wiktionary</li> <li><span class="noviewer" typeof="mw:File"><a href="/wiki/File:Commons-logo.svg" class="mw-file-description"><img alt="" src="//upload.wikimedia.org/wikipedia/en/thumb/4/4a/Commons-logo.svg/12px-Commons-logo.svg.png" decoding="async" width="12" height="16" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/4/4a/Commons-logo.svg/18px-Commons-logo.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/4/4a/Commons-logo.svg/24px-Commons-logo.svg.png 2x" data-file-width="1024" data-file-height="1376" /></a></span> Media related to <a href="https://commons.wikimedia.org/wiki/Category:Eavesdropping" class="extiw" title="commons:Category:Eavesdropping">Eavesdropping</a> at Wikimedia Commons</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 href="/wiki/Browser_Helper_Object" title="Browser Helper Object">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 class="mw-selflink selflink">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"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"></div><div role="navigation" class="navbox" aria-labelledby="Espionage" 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:Espionage" title="Template:Espionage"><abbr title="View this template">v</abbr></a></li><li class="nv-talk"><a href="/wiki/Template_talk:Espionage" title="Template talk:Espionage"><abbr title="Discuss this template">t</abbr></a></li><li class="nv-edit"><a href="/wiki/Special:EditPage/Template:Espionage" title="Special:EditPage/Template:Espionage"><abbr title="Edit this template">e</abbr></a></li></ul></div><div id="Espionage" style="font-size:114%;margin:0 4em"><a href="/wiki/Espionage" title="Espionage">Espionage</a></div></th></tr><tr><th scope="row" class="navbox-group" style="width:1%"><div class="hlist"><ul><li><a href="/wiki/Espionage#Agents_in_espionage" title="Espionage">Agents</a></li><li><a href="/wiki/Asset_(intelligence)" title="Asset (intelligence)">Assets</a></li></ul></div></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/Agent_handling" title="Agent handling">Agent handling</a></li> <li><i><a href="/wiki/Agent_provocateur" title="Agent provocateur">Agent provocateur</a></i></li> <li><a href="/wiki/Cover_(intelligence_gathering)" title="Cover (intelligence gathering)">Cover</a> <ul><li><a href="/wiki/Covert_agent" title="Covert agent">Agent</a></li></ul></li> <li><a href="/wiki/Double_agent" title="Double agent">Double agent</a></li> <li><a href="/wiki/Field_agent" title="Field agent">Field agent</a></li> <li><a href="/wiki/Mole_(espionage)" title="Mole (espionage)">Mole</a></li> <li><a href="/wiki/Resident_spy" title="Resident spy">Resident spy</a></li> <li><a href="/wiki/Sleeper_agent" title="Sleeper agent">Sleeper agent</a></li> <li><a href="/wiki/Spymaster" class="mw-redirect" title="Spymaster">Spymaster</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Analysis</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/Intelligence_assessment" title="Intelligence assessment">Intelligence assessment</a> <ul><li><a href="/wiki/Analysis_of_competing_hypotheses" title="Analysis of competing hypotheses">competing hypotheses</a></li></ul></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Devices and<br />communications</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/Burn_notice" title="Burn notice">Burn notice</a></li> <li><a href="/wiki/Concealment_device" title="Concealment device">Concealment device</a></li> <li><a href="/wiki/Covert_listening_device" title="Covert listening device">Covert listening device</a></li> <li><a href="/wiki/Cryptography" title="Cryptography">Cryptography</a></li> <li><a href="/wiki/Cutout_(espionage)" title="Cutout (espionage)">Cutout</a></li> <li><a href="/wiki/Computer_and_network_surveillance" title="Computer and network surveillance">Computer and network surveillance</a></li> <li><a href="/wiki/Cyber_spying" title="Cyber spying">Cyber spying</a></li> <li><a href="/wiki/Dead_drop" title="Dead drop">Dead drop</a></li> <li><a href="/wiki/Invisible_ink" title="Invisible ink">Invisible ink</a></li> <li><a href="/wiki/Numbers_station" title="Numbers station">Numbers station</a></li> <li><a href="/wiki/One-way_voice_link" title="One-way voice link">One-way voice link</a></li> <li><a href="/wiki/Phone_surveillance" title="Phone surveillance">Phone surveillance</a></li> <li><a href="/wiki/Short-range_agent_communications" title="Short-range agent communications">Short-range agent communications</a></li> <li><a href="/wiki/Steganography" title="Steganography">Steganography</a> <ul><li><a href="/wiki/Microdot" title="Microdot">microdot</a></li></ul></li> <li><a href="/wiki/Surveillance_tools" title="Surveillance tools">Surveillance tools</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Tradecraft" title="Tradecraft">Tradecraft</a> and<br />techniques</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/Canary_trap" title="Canary trap">Canary trap</a></li> <li><a href="/wiki/Front_organization" title="Front organization">Front organization</a></li> <li><a href="/wiki/Limited_hangout" title="Limited hangout">Limited hangout</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Operations</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/Chinese_intelligence_activity_abroad" title="Chinese intelligence activity abroad">Chinese intelligence activity abroad</a> <ul><li><a href="/wiki/Chinese_espionage_in_the_United_States" title="Chinese espionage in the United States">Chinese espionage in the United States</a></li></ul></li> <li><a href="/wiki/Cold_War_espionage" title="Cold War espionage">Cold War espionage</a></li> <li><a href="/wiki/Recruitment_of_spies" title="Recruitment of spies">Recruitment</a></li> <li><a href="/wiki/Black_operation" class="mw-redirect" title="Black operation">Black operation</a> <ul><li><a href="/wiki/Black_bag_operation" title="Black bag operation">black bag</a></li> <li><a href="/wiki/Wetwork" title="Wetwork">wetwork</a></li></ul></li> <li><a class="mw-selflink selflink">Eavesdropping</a> <ul><li><a href="/wiki/Signals_intelligence" title="Signals intelligence">SIGINT</a></li> <li><a href="/wiki/Measurement_and_signature_intelligence" title="Measurement and signature intelligence">MASINT</a></li></ul></li> <li><a href="/wiki/False_flag" title="False flag">False flag</a></li> <li><a href="/wiki/Industrial_espionage" title="Industrial espionage">Industrial espionage</a></li> <li><a href="/wiki/Human_intelligence_(intelligence_gathering)" title="Human intelligence (intelligence gathering)">Interpersonal (HUMINT) intelligence</a> <ul><li><a href="/wiki/Interrogation" title="Interrogation">interrogation</a></li> <li><a href="/wiki/Safe_house" title="Safe house">safe house</a></li></ul></li> <li><a href="/wiki/COINTELPRO" title="COINTELPRO">COINTELPRO</a></li> <li><a href="/wiki/Project_MINARET" title="Project MINARET">MINARET</a></li> <li><a href="/wiki/Project_SHAMROCK" title="Project SHAMROCK">SHAMROCK</a></li> <li><a href="/wiki/Five_Eyes" title="Five Eyes">FVEY</a></li> <li><a href="/wiki/Sexpionage" title="Sexpionage">Sexpionage</a></li> <li><a href="/wiki/Stay-behind" title="Stay-behind">Stay-behind</a></li> <li><a href="/wiki/Sting_operation" title="Sting operation">Sting operation</a></li> <li><a href="/wiki/Surveillance" title="Surveillance">Surveillance</a> <ul><li><a href="/wiki/Global_surveillance" title="Global surveillance">Global</a></li> <li><a href="/wiki/Mass_surveillance" title="Mass surveillance">Mass</a></li></ul></li> <li><a href="/wiki/Targeted_surveillance" title="Targeted surveillance">Targeted surveillance</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="Intelligence_management" 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:Intelligence_cycle_management" title="Template:Intelligence cycle management"><abbr title="View this template">v</abbr></a></li><li class="nv-talk"><a href="/wiki/Template_talk:Intelligence_cycle_management" title="Template talk:Intelligence cycle management"><abbr title="Discuss this template">t</abbr></a></li><li class="nv-edit"><a href="/wiki/Special:EditPage/Template:Intelligence_cycle_management" title="Special:EditPage/Template:Intelligence cycle management"><abbr title="Edit this template">e</abbr></a></li></ul></div><div id="Intelligence_management" style="font-size:114%;margin:0 4em"><a href="/wiki/Intelligence_cycle_management" title="Intelligence cycle management">Intelligence management</a></div></th></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Intelligence_collection_management" title="Intelligence collection management">Collection</a></th><td class="navbox-list-with-group 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><th scope="row" class="navbox-group" style="width:1%;font-weight:normal;"><a href="/wiki/Human_intelligence_(intelligence_gathering)" title="Human intelligence (intelligence gathering)">Human (HUMINT)</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><td colspan="2" class="navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Special_reconnaissance" title="Special reconnaissance">Special reconnaissance</a> <ul><li><a href="/wiki/List_of_Special_Reconnaissance_organizations" class="mw-redirect" title="List of Special Reconnaissance organizations">organizations</a></li></ul></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%;font-weight:normal;"><a href="/wiki/Clandestine_human_intelligence" title="Clandestine human intelligence">Clandestine</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/Recruitment_of_spies" title="Recruitment of spies">Asset recruiting</a></li> <li><a href="/wiki/Clandestine_cell_system" title="Clandestine cell system">Cell system</a></li> <li><a href="/wiki/Clandestine_HUMINT_and_covert_action" title="Clandestine HUMINT and covert action">Covert action</a></li> <li><a href="/wiki/Direct_action_(military)" title="Direct action (military)">Direct action</a></li> <li><a href="/wiki/Clandestine_HUMINT_operational_techniques" title="Clandestine HUMINT operational techniques">Operational techniques</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%;font-weight:normal;"><a href="/wiki/Espionage" title="Espionage">Espionage</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/Espionage#Agents_in_espionage" title="Espionage">Agents</a> <ul><li><a href="/wiki/Field_agent" title="Field agent">field</a></li> <li><a href="/wiki/Agent_handling" title="Agent handling">handling</a></li></ul></li> <li><a href="/wiki/Asset_(intelligence)" title="Asset (intelligence)">Asset</a></li> <li><a href="/wiki/Black_operation" class="mw-redirect" title="Black operation">Black operation</a> <ul><li><a href="/wiki/Black_bag_operation" title="Black bag operation">black bag</a></li></ul></li> <li><a href="/wiki/Concealment_device" title="Concealment device">Concealment device</a></li> <li><a href="/wiki/Cover_(intelligence_gathering)" title="Cover (intelligence gathering)">Cover</a></li> <li><a href="/wiki/Cryptography" title="Cryptography">Cryptography</a></li> <li><a href="/wiki/Cutout_(espionage)" title="Cutout (espionage)">Cutout</a></li> <li><a href="/wiki/Dead_drop" title="Dead drop">Dead drop</a></li> <li><a href="/wiki/Defection" title="Defection">Defection</a> / <a href="/wiki/Turncoat" title="Turncoat">Turncoat</a></li> <li><a href="/wiki/Denial_and_deception" title="Denial and deception">Denial and deception</a></li> <li><a class="mw-selflink selflink">Eavesdropping</a></li> <li><a href="/wiki/False_flag" title="False flag">False flag</a></li> <li><a href="/wiki/Industrial_espionage" title="Industrial espionage">Industrial espionage</a></li> <li><a href="/wiki/Interrogation" title="Interrogation">Interrogation</a></li> <li><a href="/wiki/Numbers_station" title="Numbers station">Numbers station</a></li> <li><a href="/wiki/One-way_voice_link" title="One-way voice link">One-way voice link</a></li> <li><a href="/wiki/Resident_spy" title="Resident spy">Resident spy</a></li> <li><a href="/wiki/Steganography" title="Steganography">Steganography</a></li> <li><a href="/wiki/Surveillance" title="Surveillance">Surveillance</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%;font-weight:normal;"><a href="/wiki/Signals_intelligence" title="Signals intelligence">Signals (SIGINT)</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/Signals_intelligence_by_alliances,_nations_and_industries" title="Signals intelligence by alliances, nations and industries">By alliances, nations and industries</a></li> <li><a href="/wiki/Signals_intelligence_in_modern_history" title="Signals intelligence in modern history">In modern history</a></li> <li><a href="/wiki/Signals_intelligence_operational_platforms_by_nation" title="Signals intelligence operational platforms by nation">Operational platforms by nation</a></li> <li><a href="/wiki/Direction_finding" title="Direction finding">Direction finding</a></li> <li><a href="/wiki/Traffic_analysis" title="Traffic analysis">Traffic analysis</a></li> <li><a href="/wiki/Tempest_(codename)" title="Tempest (codename)">TEMPEST</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%;font-weight:normal;"><a href="/wiki/Measurement_and_signature_intelligence" title="Measurement and signature intelligence">Measurement and<br />signature (MASINT)</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/Electro-optical_MASINT" title="Electro-optical MASINT">Electro-optical</a></li> <li><a href="/wiki/Geophysical_MASINT" title="Geophysical MASINT">Geophysical</a></li> <li><a href="/wiki/Nuclear_MASINT" title="Nuclear MASINT">Nuclear</a></li> <li><a href="/wiki/Radar_MASINT" title="Radar MASINT">Radar</a></li> <li><a href="/wiki/Radiofrequency_MASINT" title="Radiofrequency MASINT">Radiofrequency</a></li> <li><a href="/wiki/Materials_MASINT" title="Materials MASINT">Materials</a></li> <li><a href="/wiki/Casualty_estimation" title="Casualty estimation">Casualty estimation</a> (<a href="/wiki/Earthquake_casualty_estimation" title="Earthquake casualty estimation">earthquake</a>)</li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%;font-weight:normal;">Other</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/Financial_intelligence" title="Financial intelligence">Financial (FININT)</a></li> <li><a href="/wiki/Geospatial_intelligence" title="Geospatial intelligence">Geospatial (GEOINT)</a></li> <li><a href="/wiki/Imagery_intelligence" title="Imagery intelligence">Imagery (IMINT)</a></li> <li><a href="/wiki/Open-source_intelligence" title="Open-source intelligence">Open-source (OSINT)</a></li> <li><a href="/wiki/Technical_intelligence" title="Technical intelligence">Technical (TECHINT)</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Intelligence_analysis_management" title="Intelligence analysis management">Analysis</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/Analysis_of_competing_hypotheses" title="Analysis of competing hypotheses">Competing hypotheses</a></li> <li><a href="/wiki/Intelligence_cycle_(target-centric_approach)" title="Intelligence cycle (target-centric approach)">Target-centric</a></li> <li><a href="/wiki/Words_of_estimative_probability" title="Words of estimative probability">Words of estimative probability</a></li> <li><a href="/wiki/All-source_intelligence" title="All-source intelligence">All-source intelligence</a></li> <li><a href="/wiki/Basic_intelligence" title="Basic intelligence">Basic intelligence</a></li> <li><a href="/wiki/Intelligence_assessment" title="Intelligence assessment">Intelligence assessment</a></li> <li><a href="/wiki/Medical_intelligence" title="Medical intelligence">Medical intelligence</a></li> <li><a href="/wiki/Military_geography" title="Military geography">Military geography</a></li> <li><a href="/wiki/Technical_intelligence" title="Technical intelligence">Scientific & Technical intelligence</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Intelligence_dissemination_management" title="Intelligence dissemination management">Dissemination</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/Intelligence_cycle_security" title="Intelligence cycle security">Intelligence cycle security</a></li> <li><a href="/wiki/Counterintelligence" title="Counterintelligence">Counterintelligence</a> <ul><li><a href="/wiki/List_of_counterintelligence_organizations" title="List of counterintelligence organizations">organizations</a></li></ul></li> <li><a href="/wiki/Counter-intelligence_and_counter-terrorism_organizations" title="Counter-intelligence and counter-terrorism organizations">Counterintelligence and counter-terrorism organizations</a></li></ul> </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=Eavesdropping&oldid=1243328136">https://en.wikipedia.org/w/index.php?title=Eavesdropping&oldid=1243328136</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">Categories</a>: <ul><li><a href="/wiki/Category:Espionage_techniques" title="Category:Espionage techniques">Espionage techniques</a></li><li><a href="/wiki/Category:Fiction" title="Category:Fiction">Fiction</a></li><li><a href="/wiki/Category:Plot_(narrative)" title="Category:Plot (narrative)">Plot (narrative)</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:All_articles_with_incomplete_citations" title="Category:All articles with incomplete citations">All articles with incomplete citations</a></li><li><a href="/wiki/Category:Articles_with_incomplete_citations_from_June_2014" title="Category:Articles with incomplete citations from June 2014">Articles with incomplete citations from June 2014</a></li><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:Use_mdy_dates_from_September_2023" title="Category:Use mdy dates from September 2023">Use mdy dates from September 2023</a></li><li><a href="/wiki/Category:Commons_category_link_is_on_Wikidata" title="Category:Commons category link is on Wikidata">Commons category link is on Wikidata</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 31 August 2024, at 21:26<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=Eavesdropping&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-6df7948d6c-9x24j","wgBackendResponseTime":164,"wgPageParseReport":{"limitreport":{"cputime":"0.378","walltime":"0.527","ppvisitednodes":{"value":1553,"limit":1000000},"postexpandincludesize":{"value":75781,"limit":2097152},"templateargumentsize":{"value":1810,"limit":2097152},"expansiondepth":{"value":14,"limit":100},"expensivefunctioncount":{"value":6,"limit":500},"unstrip-depth":{"value":1,"limit":20},"unstrip-size":{"value":58428,"limit":5000000},"entityaccesscount":{"value":1,"limit":400},"timingprofile":["100.00% 435.762 1 -total"," 41.34% 180.150 1 Template:Reflist"," 23.11% 100.720 5 Template:Navbox"," 20.97% 91.358 5 Template:Cite_web"," 18.69% 81.461 1 Template:Information_security"," 14.39% 62.687 1 Template:Short_description"," 11.24% 48.977 1 Template:Full_citation_needed"," 10.73% 46.739 1 Template:Fix"," 8.21% 35.794 2 Template:Pagetype"," 8.09% 35.262 1 Template:Category_handler"]},"scribunto":{"limitreport-timeusage":{"value":"0.218","limit":"10.000"},"limitreport-memusage":{"value":6006367,"limit":52428800}},"cachereport":{"origin":"mw-web.codfw.main-cc877b49b-mdxc6","timestamp":"20241127133512","ttl":2592000,"transientcontent":false}}});});</script> <script type="application/ld+json">{"@context":"https:\/\/schema.org","@type":"Article","name":"Eavesdropping","url":"https:\/\/en.wikipedia.org\/wiki\/Eavesdropping","sameAs":"http:\/\/www.wikidata.org\/entity\/Q320769","mainEntity":"http:\/\/www.wikidata.org\/entity\/Q320769","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":"2003-11-19T22:21:57Z","dateModified":"2024-08-31T21:26:33Z","image":"https:\/\/upload.wikimedia.org\/wikipedia\/commons\/7\/7b\/Henri_Adolphe_Laissement_Kardin%C3%A4le_im_Vorzimmer_1895.jpg","headline":"act of secretly listening to the private communications of others"}</script> </body> </html>