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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">Beginning</div> </a> </li> <li id="toc-History" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#History"> <div class="vector-toc-text"> <span class="vector-toc-numb">1</span> <span>History</span> </div> </a> <ul id="toc-History-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Purposes" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Purposes"> <div class="vector-toc-text"> <span class="vector-toc-numb">2</span> <span>Purposes</span> </div> </a> <ul id="toc-Purposes-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-How_malware_gets_installed" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#How_malware_gets_installed"> <div class="vector-toc-text"> <span class="vector-toc-numb">3</span> <span>How malware gets installed</span> </div> </a> <ul id="toc-How_malware_gets_installed-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Kinds_of_malware" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Kinds_of_malware"> <div class="vector-toc-text"> <span class="vector-toc-numb">4</span> <span>Kinds of malware</span> </div> </a> <ul id="toc-Kinds_of_malware-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Why_computers_get_malware" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Why_computers_get_malware"> <div class="vector-toc-text"> <span class="vector-toc-numb">5</span> <span>Why computers get malware</span> </div> </a> <ul id="toc-Why_computers_get_malware-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-How_malware_is_stopped" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#How_malware_is_stopped"> <div class="vector-toc-text"> <span class="vector-toc-numb">6</span> <span>How malware is stopped</span> </div> </a> <ul id="toc-How_malware_is_stopped-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">7</span> <span>References</span> </div> </a> <ul id="toc-References-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" title="Table of Contents" > <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 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Available in 77 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-77" 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">77 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%A8%D8%B1%D9%85%D8%AC%D9%8A%D8%A9_%D8%AE%D8%A8%D9%8A%D8%AB%D8%A9" title="برمجية خبيثة – Arabic" lang="ar" hreflang="ar" data-title="برمجية خبيثة" data-language-autonym="العربية" data-language-local-name="Arabic" class="interlanguage-link-target"><span>العربية</span></a></li><li class="interlanguage-link interwiki-ast mw-list-item"><a href="https://ast.wikipedia.org/wiki/Malware" title="Malware – Asturian" lang="ast" hreflang="ast" data-title="Malware" data-language-autonym="Asturianu" data-language-local-name="Asturian" class="interlanguage-link-target"><span>Asturianu</span></a></li><li class="interlanguage-link interwiki-az mw-list-item"><a href="https://az.wikipedia.org/wiki/Ziyankar_proqram" title="Ziyankar proqram – Azerbaijani" lang="az" hreflang="az" data-title="Ziyankar proqram" data-language-autonym="Azərbaycanca" data-language-local-name="Azerbaijani" class="interlanguage-link-target"><span>Azərbaycanca</span></a></li><li class="interlanguage-link interwiki-bn mw-list-item"><a href="https://bn.wikipedia.org/wiki/%E0%A6%AE%E0%A7%8D%E0%A6%AF%E0%A6%BE%E0%A6%B2%E0%A6%93%E0%A6%AF%E0%A6%BC%E0%A7%8D%E0%A6%AF%E0%A6%BE%E0%A6%B0" title="ম্যালওয়্যার – Bangla" lang="bn" hreflang="bn" data-title="ম্যালওয়্যার" data-language-autonym="বাংলা" data-language-local-name="Bangla" class="interlanguage-link-target"><span>বাংলা</span></a></li><li class="interlanguage-link interwiki-zh-min-nan mw-list-item"><a href="https://zh-min-nan.wikipedia.org/wiki/Ph%C3%A1i%E2%81%BF-th%C3%A9" title="Pháiⁿ-thé – Minnan" lang="nan" hreflang="nan" data-title="Pháiⁿ-thé" data-language-autonym="閩南語 / Bân-lâm-gú" data-language-local-name="Minnan" class="interlanguage-link-target"><span>閩南語 / Bân-lâm-gú</span></a></li><li class="interlanguage-link interwiki-be mw-list-item"><a href="https://be.wikipedia.org/wiki/%D0%A8%D0%BA%D0%BE%D0%B4%D0%BD%D0%B0%D1%8F_%D0%BF%D1%80%D0%B0%D0%B3%D1%80%D0%B0%D0%BC%D0%B0" title="Шкодная праграма – Belarusian" lang="be" hreflang="be" data-title="Шкодная праграма" data-language-autonym="Беларуская" data-language-local-name="Belarusian" class="interlanguage-link-target"><span>Беларуская</span></a></li><li class="interlanguage-link interwiki-bh mw-list-item"><a href="https://bh.wikipedia.org/wiki/%E0%A4%AE%E0%A5%88%E0%A4%B2%E0%A4%B5%E0%A5%87%E0%A4%AF%E0%A4%B0" title="मैलवेयर – Bhojpuri" lang="bh" hreflang="bh" data-title="मैलवेयर" data-language-autonym="भोजपुरी" data-language-local-name="Bhojpuri" class="interlanguage-link-target"><span>भोजपुरी</span></a></li><li class="interlanguage-link interwiki-bg mw-list-item"><a href="https://bg.wikipedia.org/wiki/%D0%9C%D0%B0%D0%BB%D1%83%D0%B5%D1%80" title="Малуер – Bulgarian" lang="bg" hreflang="bg" data-title="Малуер" data-language-autonym="Български" data-language-local-name="Bulgarian" class="interlanguage-link-target"><span>Български</span></a></li><li class="interlanguage-link interwiki-bs mw-list-item"><a href="https://bs.wikipedia.org/wiki/Malware" title="Malware – Bosnian" lang="bs" hreflang="bs" data-title="Malware" data-language-autonym="Bosanski" data-language-local-name="Bosnian" class="interlanguage-link-target"><span>Bosanski</span></a></li><li class="interlanguage-link interwiki-ca mw-list-item"><a href="https://ca.wikipedia.org/wiki/Programari_malici%C3%B3s" title="Programari maliciós – Catalan" lang="ca" hreflang="ca" data-title="Programari maliciós" data-language-autonym="Català" data-language-local-name="Catalan" class="interlanguage-link-target"><span>Català</span></a></li><li class="interlanguage-link interwiki-cs mw-list-item"><a href="https://cs.wikipedia.org/wiki/Malware" title="Malware – Czech" lang="cs" hreflang="cs" data-title="Malware" data-language-autonym="Čeština" data-language-local-name="Czech" class="interlanguage-link-target"><span>Čeština</span></a></li><li class="interlanguage-link interwiki-da mw-list-item"><a href="https://da.wikipedia.org/wiki/Malware" title="Malware – Danish" lang="da" hreflang="da" data-title="Malware" data-language-autonym="Dansk" data-language-local-name="Danish" class="interlanguage-link-target"><span>Dansk</span></a></li><li class="interlanguage-link interwiki-de mw-list-item"><a href="https://de.wikipedia.org/wiki/Schadprogramm" title="Schadprogramm – German" lang="de" hreflang="de" data-title="Schadprogramm" data-language-autonym="Deutsch" data-language-local-name="German" class="interlanguage-link-target"><span>Deutsch</span></a></li><li class="interlanguage-link interwiki-et mw-list-item"><a href="https://et.wikipedia.org/wiki/Kurivara" title="Kurivara – Estonian" lang="et" hreflang="et" data-title="Kurivara" data-language-autonym="Eesti" data-language-local-name="Estonian" class="interlanguage-link-target"><span>Eesti</span></a></li><li class="interlanguage-link interwiki-el mw-list-item"><a href="https://el.wikipedia.org/wiki/%CE%9A%CE%B1%CE%BA%CF%8C%CE%B2%CE%BF%CF%85%CE%BB%CE%BF_%CE%BB%CE%BF%CE%B3%CE%B9%CF%83%CE%BC%CE%B9%CE%BA%CF%8C" title="Κακόβουλο λογισμικό – Greek" lang="el" hreflang="el" data-title="Κακόβουλο λογισμικό" data-language-autonym="Ελληνικά" data-language-local-name="Greek" class="interlanguage-link-target"><span>Ελληνικά</span></a></li><li class="interlanguage-link interwiki-en mw-list-item"><a href="https://en.wikipedia.org/wiki/Malware" title="Malware – English" lang="en" hreflang="en" data-title="Malware" data-language-autonym="English" data-language-local-name="English" class="interlanguage-link-target"><span>English</span></a></li><li class="interlanguage-link interwiki-es mw-list-item"><a href="https://es.wikipedia.org/wiki/Malware" title="Malware – Spanish" lang="es" hreflang="es" data-title="Malware" data-language-autonym="Español" data-language-local-name="Spanish" class="interlanguage-link-target"><span>Español</span></a></li><li class="interlanguage-link interwiki-eu mw-list-item"><a href="https://eu.wikipedia.org/wiki/Malware" title="Malware – Basque" lang="eu" hreflang="eu" data-title="Malware" data-language-autonym="Euskara" data-language-local-name="Basque" class="interlanguage-link-target"><span>Euskara</span></a></li><li class="interlanguage-link interwiki-fa mw-list-item"><a href="https://fa.wikipedia.org/wiki/%D8%A8%D8%AF%D8%A7%D9%81%D8%B2%D8%A7%D8%B1" title="بدافزار – Persian" lang="fa" hreflang="fa" data-title="بدافزار" 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/Logiciel_malveillant" title="Logiciel malveillant – French" lang="fr" hreflang="fr" data-title="Logiciel malveillant" data-language-autonym="Français" data-language-local-name="French" class="interlanguage-link-target"><span>Français</span></a></li><li class="interlanguage-link interwiki-ga mw-list-item"><a href="https://ga.wikipedia.org/wiki/Bogearra%C3%AD_mail%C3%ADseacha" title="Bogearraí mailíseacha – Irish" lang="ga" hreflang="ga" data-title="Bogearraí mailíseacha" data-language-autonym="Gaeilge" data-language-local-name="Irish" class="interlanguage-link-target"><span>Gaeilge</span></a></li><li class="interlanguage-link interwiki-ko mw-list-item"><a href="https://ko.wikipedia.org/wiki/%EC%95%85%EC%84%B1_%EC%86%8C%ED%94%84%ED%8A%B8%EC%9B%A8%EC%96%B4" title="악성 소프트웨어 – Korean" lang="ko" hreflang="ko" data-title="악성 소프트웨어" 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/%D5%8E%D5%B6%D5%A1%D5%BD%D5%A1%D5%AF%D5%A1%D6%80_%D5%AE%D6%80%D5%A1%D5%A3%D5%AB%D6%80" title="Վնասակար ծրագիր – Armenian" lang="hy" hreflang="hy" data-title="Վնասակար ծրագիր" 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%AE%E0%A5%88%E0%A4%B2%E0%A4%B5%E0%A5%87%E0%A4%AF%E0%A4%B0" title="मैलवेयर – Hindi" lang="hi" hreflang="hi" data-title="मैलवेयर" data-language-autonym="हिन्दी" data-language-local-name="Hindi" class="interlanguage-link-target"><span>हिन्दी</span></a></li><li class="interlanguage-link interwiki-hr mw-list-item"><a href="https://hr.wikipedia.org/wiki/Zlo%C4%87udni_softver" title="Zloćudni softver – Croatian" lang="hr" hreflang="hr" data-title="Zloćudni softver" data-language-autonym="Hrvatski" data-language-local-name="Croatian" class="interlanguage-link-target"><span>Hrvatski</span></a></li><li class="interlanguage-link interwiki-io mw-list-item"><a href="https://io.wikipedia.org/wiki/Domajiva_programaro" title="Domajiva programaro – Ido" lang="io" hreflang="io" data-title="Domajiva programaro" data-language-autonym="Ido" data-language-local-name="Ido" class="interlanguage-link-target"><span>Ido</span></a></li><li class="interlanguage-link interwiki-id mw-list-item"><a href="https://id.wikipedia.org/wiki/Perangkat_pembahaya" title="Perangkat pembahaya – Indonesian" lang="id" hreflang="id" data-title="Perangkat pembahaya" 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-ia mw-list-item"><a href="https://ia.wikipedia.org/wiki/Programmario_malitiose" title="Programmario malitiose – Interlingua" lang="ia" hreflang="ia" data-title="Programmario malitiose" data-language-autonym="Interlingua" data-language-local-name="Interlingua" class="interlanguage-link-target"><span>Interlingua</span></a></li><li class="interlanguage-link interwiki-it mw-list-item"><a href="https://it.wikipedia.org/wiki/Malware" title="Malware – Italian" lang="it" hreflang="it" data-title="Malware" data-language-autonym="Italiano" data-language-local-name="Italian" class="interlanguage-link-target"><span>Italiano</span></a></li><li class="interlanguage-link interwiki-he mw-list-item"><a href="https://he.wikipedia.org/wiki/%D7%A0%D7%95%D7%96%D7%A7%D7%94" title="נוזקה – Hebrew" lang="he" hreflang="he" data-title="נוזקה" data-language-autonym="עברית" data-language-local-name="Hebrew" class="interlanguage-link-target"><span>עברית</span></a></li><li class="interlanguage-link interwiki-jv mw-list-item"><a href="https://jv.wikipedia.org/wiki/Piranti_pangrusak" title="Piranti pangrusak – Javanese" lang="jv" hreflang="jv" data-title="Piranti pangrusak" data-language-autonym="Jawa" data-language-local-name="Javanese" class="interlanguage-link-target"><span>Jawa</span></a></li><li class="interlanguage-link interwiki-kn mw-list-item"><a href="https://kn.wikipedia.org/wiki/%E0%B2%AE%E0%B2%BE%E0%B2%B2%E0%B3%8D%E2%80%8C%E0%B2%B5%E0%B3%87%E0%B2%B0%E0%B3%8D" title="ಮಾಲ್‌ವೇರ್ – Kannada" lang="kn" hreflang="kn" data-title="ಮಾಲ್‌ವೇರ್" data-language-autonym="ಕನ್ನಡ" data-language-local-name="Kannada" class="interlanguage-link-target"><span>ಕನ್ನಡ</span></a></li><li class="interlanguage-link interwiki-ka mw-list-item"><a href="https://ka.wikipedia.org/wiki/%E1%83%9B%E1%83%90%E1%83%95%E1%83%9C%E1%83%94_%E1%83%9E%E1%83%A0%E1%83%9D%E1%83%92%E1%83%A0%E1%83%90%E1%83%9B%E1%83%90" title="მავნე პროგრამა – Georgian" lang="ka" hreflang="ka" data-title="მავნე პროგრამა" data-language-autonym="ქართული" data-language-local-name="Georgian" class="interlanguage-link-target"><span>ქართული</span></a></li><li class="interlanguage-link interwiki-ky mw-list-item"><a href="https://ky.wikipedia.org/wiki/%D0%97%D1%8B%D1%8F%D0%BD%D0%B4%D1%83%D1%83_%D0%BF%D1%80%D0%BE%D0%B3%D1%80%D0%B0%D0%BC%D0%BC%D0%B0" title="Зыяндуу программа – Kyrgyz" lang="ky" hreflang="ky" data-title="Зыяндуу программа" data-language-autonym="Кыргызча" data-language-local-name="Kyrgyz" class="interlanguage-link-target"><span>Кыргызча</span></a></li><li class="interlanguage-link interwiki-la mw-list-item"><a href="https://la.wikipedia.org/wiki/Malware" title="Malware – Latin" lang="la" hreflang="la" data-title="Malware" data-language-autonym="Latina" data-language-local-name="Latin" class="interlanguage-link-target"><span>Latina</span></a></li><li class="interlanguage-link interwiki-lv mw-list-item"><a href="https://lv.wikipedia.org/wiki/%C4%BBaunprogrammat%C5%ABra" title="Ļaunprogrammatūra – Latvian" lang="lv" hreflang="lv" data-title="Ļaunprogrammatūra" data-language-autonym="Latviešu" data-language-local-name="Latvian" class="interlanguage-link-target"><span>Latviešu</span></a></li><li class="interlanguage-link interwiki-lmo mw-list-item"><a href="https://lmo.wikipedia.org/wiki/Malware" title="Malware – Lombard" lang="lmo" hreflang="lmo" data-title="Malware" data-language-autonym="Lombard" data-language-local-name="Lombard" class="interlanguage-link-target"><span>Lombard</span></a></li><li class="interlanguage-link interwiki-hu mw-list-item"><a href="https://hu.wikipedia.org/wiki/Malware" title="Malware – Hungarian" lang="hu" hreflang="hu" data-title="Malware" data-language-autonym="Magyar" data-language-local-name="Hungarian" class="interlanguage-link-target"><span>Magyar</span></a></li><li class="interlanguage-link interwiki-mk mw-list-item"><a href="https://mk.wikipedia.org/wiki/%D0%97%D0%BB%D0%BE%D0%BD%D0%B0%D0%BC%D0%B5%D1%80%D0%B5%D0%BD_%D0%BF%D1%80%D0%BE%D0%B3%D1%80%D0%B0%D0%BC" title="Злонамерен програм – Macedonian" lang="mk" hreflang="mk" data-title="Злонамерен програм" data-language-autonym="Македонски" data-language-local-name="Macedonian" class="interlanguage-link-target"><span>Македонски</span></a></li><li class="interlanguage-link interwiki-ml mw-list-item"><a href="https://ml.wikipedia.org/wiki/%E0%B4%AE%E0%B4%BE%E0%B5%BD%E0%B4%B5%E0%B5%86%E0%B4%AF%E0%B5%BC" title="മാൽവെയർ – Malayalam" lang="ml" hreflang="ml" data-title="മാൽവെയർ" data-language-autonym="മലയാളം" data-language-local-name="Malayalam" class="interlanguage-link-target"><span>മലയാളം</span></a></li><li class="interlanguage-link interwiki-mr mw-list-item"><a href="https://mr.wikipedia.org/wiki/%E0%A4%AE%E0%A4%BE%E0%A4%B2%E0%A4%B5%E0%A5%87%E0%A4%85%E0%A4%B0" title="मालवेअर – Marathi" lang="mr" hreflang="mr" data-title="मालवेअर" data-language-autonym="मराठी" data-language-local-name="Marathi" class="interlanguage-link-target"><span>मराठी</span></a></li><li class="interlanguage-link interwiki-ms mw-list-item"><a href="https://ms.wikipedia.org/wiki/Perisian_perosak" title="Perisian perosak – Malay" lang="ms" hreflang="ms" data-title="Perisian perosak" data-language-autonym="Bahasa Melayu" data-language-local-name="Malay" class="interlanguage-link-target"><span>Bahasa Melayu</span></a></li><li class="interlanguage-link interwiki-mn mw-list-item"><a href="https://mn.wikipedia.org/wiki/Malware" title="Malware – Mongolian" lang="mn" hreflang="mn" data-title="Malware" data-language-autonym="Монгол" data-language-local-name="Mongolian" class="interlanguage-link-target"><span>Монгол</span></a></li><li class="interlanguage-link interwiki-my mw-list-item"><a href="https://my.wikipedia.org/wiki/%E1%80%99%E1%80%B1%E1%80%AC%E1%80%9C%E1%80%BA%E1%80%9D%E1%80%B2%E1%80%9C%E1%80%BA" title="မောလ်ဝဲလ် – Burmese" lang="my" hreflang="my" data-title="မောလ်ဝဲလ်" data-language-autonym="မြန်မာဘာသာ" data-language-local-name="Burmese" class="interlanguage-link-target"><span>မြန်မာဘာသာ</span></a></li><li class="interlanguage-link interwiki-nl mw-list-item"><a href="https://nl.wikipedia.org/wiki/Malware" title="Malware – Dutch" lang="nl" hreflang="nl" data-title="Malware" data-language-autonym="Nederlands" data-language-local-name="Dutch" class="interlanguage-link-target"><span>Nederlands</span></a></li><li class="interlanguage-link interwiki-ja mw-list-item"><a href="https://ja.wikipedia.org/wiki/%E3%83%9E%E3%83%AB%E3%82%A6%E3%82%A7%E3%82%A2" title="マルウェア – Japanese" lang="ja" hreflang="ja" data-title="マルウェア" 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/Skadevare" title="Skadevare – Norwegian Bokmål" lang="nb" hreflang="nb" data-title="Skadevare" 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/Malware" title="Malware – Norwegian Nynorsk" lang="nn" hreflang="nn" data-title="Malware" 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-uz mw-list-item"><a href="https://uz.wikipedia.org/wiki/Zararli_dastur" title="Zararli dastur – Uzbek" lang="uz" hreflang="uz" data-title="Zararli dastur" data-language-autonym="Oʻzbekcha / ўзбекча" data-language-local-name="Uzbek" class="interlanguage-link-target"><span>Oʻzbekcha / ўзбекча</span></a></li><li class="interlanguage-link interwiki-pa mw-list-item"><a href="https://pa.wikipedia.org/wiki/%E0%A8%AE%E0%A8%BE%E0%A8%B2%E0%A8%B5%E0%A9%87%E0%A8%85%E0%A8%B0" title="ਮਾਲਵੇਅਰ – Punjabi" lang="pa" hreflang="pa" data-title="ਮਾਲਵੇਅਰ" data-language-autonym="ਪੰਜਾਬੀ" data-language-local-name="Punjabi" class="interlanguage-link-target"><span>ਪੰਜਾਬੀ</span></a></li><li class="interlanguage-link interwiki-pl mw-list-item"><a href="https://pl.wikipedia.org/wiki/Z%C5%82o%C5%9Bliwe_oprogramowanie" title="Złośliwe oprogramowanie – Polish" lang="pl" hreflang="pl" data-title="Złośliwe oprogramowanie" data-language-autonym="Polski" data-language-local-name="Polish" class="interlanguage-link-target"><span>Polski</span></a></li><li class="interlanguage-link interwiki-pt mw-list-item"><a href="https://pt.wikipedia.org/wiki/Malware" title="Malware – Portuguese" lang="pt" hreflang="pt" data-title="Malware" data-language-autonym="Português" data-language-local-name="Portuguese" class="interlanguage-link-target"><span>Português</span></a></li><li class="interlanguage-link interwiki-kaa mw-list-item"><a href="https://kaa.wikipedia.org/wiki/Z%C4%B1yanl%C4%B1_programma" title="Zıyanlı programma – Kara-Kalpak" lang="kaa" hreflang="kaa" data-title="Zıyanlı programma" data-language-autonym="Qaraqalpaqsha" data-language-local-name="Kara-Kalpak" class="interlanguage-link-target"><span>Qaraqalpaqsha</span></a></li><li class="interlanguage-link interwiki-ro mw-list-item"><a href="https://ro.wikipedia.org/wiki/Software_r%C4%83u_inten%C8%9Bionat" title="Software rău intenționat – Romanian" lang="ro" hreflang="ro" data-title="Software rău intenționat" data-language-autonym="Română" data-language-local-name="Romanian" class="interlanguage-link-target"><span>Română</span></a></li><li class="interlanguage-link interwiki-qu mw-list-item"><a href="https://qu.wikipedia.org/wiki/Malware" title="Malware – Quechua" lang="qu" hreflang="qu" data-title="Malware" data-language-autonym="Runa Simi" data-language-local-name="Quechua" class="interlanguage-link-target"><span>Runa Simi</span></a></li><li class="interlanguage-link interwiki-ru mw-list-item"><a href="https://ru.wikipedia.org/wiki/%D0%92%D1%80%D0%B5%D0%B4%D0%BE%D0%BD%D0%BE%D1%81%D0%BD%D0%B0%D1%8F_%D0%BF%D1%80%D0%BE%D0%B3%D1%80%D0%B0%D0%BC%D0%BC%D0%B0" title="Вредоносная программа – Russian" lang="ru" hreflang="ru" data-title="Вредоносная программа" data-language-autonym="Русский" data-language-local-name="Russian" class="interlanguage-link-target"><span>Русский</span></a></li><li class="interlanguage-link interwiki-sq mw-list-item"><a href="https://sq.wikipedia.org/wiki/Programi_i_d%C3%ABmsh%C3%ABm" title="Programi i dëmshëm – Albanian" lang="sq" hreflang="sq" data-title="Programi i dëmshëm" data-language-autonym="Shqip" data-language-local-name="Albanian" class="interlanguage-link-target"><span>Shqip</span></a></li><li class="interlanguage-link interwiki-sk mw-list-item"><a href="https://sk.wikipedia.org/wiki/Malware" title="Malware – Slovak" lang="sk" hreflang="sk" data-title="Malware" data-language-autonym="Slovenčina" data-language-local-name="Slovak" class="interlanguage-link-target"><span>Slovenčina</span></a></li><li class="interlanguage-link interwiki-sl mw-list-item"><a href="https://sl.wikipedia.org/wiki/Zlonamerna_programska_oprema" title="Zlonamerna programska oprema – Slovenian" lang="sl" hreflang="sl" data-title="Zlonamerna programska oprema" data-language-autonym="Slovenščina" data-language-local-name="Slovenian" class="interlanguage-link-target"><span>Slovenščina</span></a></li><li class="interlanguage-link interwiki-ckb mw-list-item"><a href="https://ckb.wikipedia.org/wiki/%D8%B2%DB%8C%D8%A7%D9%86%D8%A7%D9%85%DB%8E%D8%B1" title="زیانامێر – Central Kurdish" lang="ckb" hreflang="ckb" data-title="زیانامێر" data-language-autonym="کوردی" data-language-local-name="Central Kurdish" class="interlanguage-link-target"><span>کوردی</span></a></li><li class="interlanguage-link interwiki-sr mw-list-item"><a href="https://sr.wikipedia.org/wiki/%D0%9C%D0%B0%D0%BB%D0%B2%D0%B5%D1%80" title="Малвер – Serbian" lang="sr" hreflang="sr" data-title="Малвер" data-language-autonym="Српски / srpski" data-language-local-name="Serbian" class="interlanguage-link-target"><span>Српски / srpski</span></a></li><li class="interlanguage-link interwiki-sh badge-Q17437796 badge-featuredarticle mw-list-item" title="featured article badge"><a href="https://sh.wikipedia.org/wiki/Malware" title="Malware – Serbo-Croatian" lang="sh" hreflang="sh" data-title="Malware" data-language-autonym="Srpskohrvatski / српскохрватски" data-language-local-name="Serbo-Croatian" class="interlanguage-link-target"><span>Srpskohrvatski / српскохрватски</span></a></li><li class="interlanguage-link interwiki-fi mw-list-item"><a href="https://fi.wikipedia.org/wiki/Haittaohjelma" title="Haittaohjelma – Finnish" lang="fi" hreflang="fi" data-title="Haittaohjelma" 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/Sabotageprogram" title="Sabotageprogram – Swedish" lang="sv" hreflang="sv" data-title="Sabotageprogram" data-language-autonym="Svenska" data-language-local-name="Swedish" class="interlanguage-link-target"><span>Svenska</span></a></li><li class="interlanguage-link interwiki-tl mw-list-item"><a href="https://tl.wikipedia.org/wiki/Malware" title="Malware – Tagalog" lang="tl" hreflang="tl" data-title="Malware" data-language-autonym="Tagalog" data-language-local-name="Tagalog" class="interlanguage-link-target"><span>Tagalog</span></a></li><li class="interlanguage-link interwiki-ta mw-list-item"><a href="https://ta.wikipedia.org/wiki/%E0%AE%A4%E0%AF%80%E0%AE%AA%E0%AF%8D%E0%AE%AA%E0%AF%8A%E0%AE%B0%E0%AF%81%E0%AE%B3%E0%AF%8D" title="தீப்பொருள் – Tamil" lang="ta" hreflang="ta" data-title="தீப்பொருள்" data-language-autonym="தமிழ்" data-language-local-name="Tamil" class="interlanguage-link-target"><span>தமிழ்</span></a></li><li class="interlanguage-link interwiki-th mw-list-item"><a href="https://th.wikipedia.org/wiki/%E0%B8%A1%E0%B8%B1%E0%B8%A5%E0%B9%81%E0%B8%A7%E0%B8%A3%E0%B9%8C" title="มัลแวร์ – Thai" lang="th" hreflang="th" data-title="มัลแวร์" data-language-autonym="ไทย" data-language-local-name="Thai" class="interlanguage-link-target"><span>ไทย</span></a></li><li class="interlanguage-link interwiki-tg mw-list-item"><a href="https://tg.wikipedia.org/wiki/%D0%91%D0%B0%D0%B4%D0%B0%D1%84%D0%B7%D0%BE%D1%80" title="Бадафзор – Tajik" lang="tg" hreflang="tg" data-title="Бадафзор" data-language-autonym="Тоҷикӣ" data-language-local-name="Tajik" class="interlanguage-link-target"><span>Тоҷикӣ</span></a></li><li class="interlanguage-link interwiki-tr mw-list-item"><a href="https://tr.wikipedia.org/wiki/Malware" title="Malware – Turkish" lang="tr" hreflang="tr" data-title="Malware" data-language-autonym="Türkçe" data-language-local-name="Turkish" class="interlanguage-link-target"><span>Türkçe</span></a></li><li class="interlanguage-link interwiki-bug mw-list-item"><a href="https://bug.wikipedia.org/wiki/Malware" title="Malware – Buginese" lang="bug" hreflang="bug" data-title="Malware" data-language-autonym="Basa Ugi" data-language-local-name="Buginese" class="interlanguage-link-target"><span>Basa Ugi</span></a></li><li class="interlanguage-link interwiki-uk mw-list-item"><a href="https://uk.wikipedia.org/wiki/%D0%A8%D0%BA%D1%96%D0%B4%D0%BB%D0%B8%D0%B2%D0%B8%D0%B9_%D0%BF%D1%80%D0%BE%D0%B3%D1%80%D0%B0%D0%BC%D0%BD%D0%B8%D0%B9_%D0%B7%D0%B0%D1%81%D1%96%D0%B1" title="Шкідливий програмний засіб – Ukrainian" lang="uk" hreflang="uk" data-title="Шкідливий програмний засіб" data-language-autonym="Українська" data-language-local-name="Ukrainian" class="interlanguage-link-target"><span>Українська</span></a></li><li class="interlanguage-link interwiki-ur mw-list-item"><a href="https://ur.wikipedia.org/wiki/%D9%85%D8%A7%D9%84%D9%88%DB%8C%D8%A6%D8%B1" title="مالویئر – Urdu" lang="ur" hreflang="ur" data-title="مالویئر" data-language-autonym="اردو" data-language-local-name="Urdu" class="interlanguage-link-target"><span>اردو</span></a></li><li class="interlanguage-link interwiki-vec mw-list-item"><a href="https://vec.wikipedia.org/wiki/Malware" title="Malware – Venetian" lang="vec" hreflang="vec" data-title="Malware" data-language-autonym="Vèneto" data-language-local-name="Venetian" class="interlanguage-link-target"><span>Vèneto</span></a></li><li class="interlanguage-link interwiki-vi mw-list-item"><a href="https://vi.wikipedia.org/wiki/Ph%E1%BA%A7n_m%E1%BB%81m_%C3%A1c_%C3%BD" title="Phần mềm ác ý – Vietnamese" lang="vi" hreflang="vi" data-title="Phần mềm ác ý" 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-wuu mw-list-item"><a href="https://wuu.wikipedia.org/wiki/%E6%81%B6%E6%84%8F%E8%BD%AF%E4%BB%B6" title="恶意软件 – Wu" lang="wuu" hreflang="wuu" data-title="恶意软件" data-language-autonym="吴语" data-language-local-name="Wu" class="interlanguage-link-target"><span>吴语</span></a></li><li class="interlanguage-link interwiki-zh-yue mw-list-item"><a href="https://zh-yue.wikipedia.org/wiki/%E6%83%A1%E6%84%8F%E7%A8%8B%E5%BC%8F" title="惡意程式 – Cantonese" lang="yue" hreflang="yue" data-title="惡意程式" data-language-autonym="粵語" data-language-local-name="Cantonese" class="interlanguage-link-target"><span>粵語</span></a></li><li class="interlanguage-link interwiki-zh mw-list-item"><a href="https://zh.wikipedia.org/wiki/%E6%81%B6%E6%84%8F%E8%BD%AF%E4%BB%B6" title="恶意软件 – Chinese" lang="zh" hreflang="zh" data-title="恶意软件" 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 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<div class="vector-body-before-content"> <div class="mw-indicators"> </div> <div id="siteSub" class="noprint">From Simple English 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"><figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Malware_logo.svg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/f/ff/Malware_logo.svg/220px-Malware_logo.svg.png" decoding="async" width="220" height="227" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/f/ff/Malware_logo.svg/330px-Malware_logo.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/f/ff/Malware_logo.svg/440px-Malware_logo.svg.png 2x" data-file-width="119" data-file-height="123" /></a><figcaption>Malware takes over computers without a user knowing. </figcaption></figure> <p><b>Malware</b>, short for <b>malicious software</b>, is any software intentionally designed to cause damage to a computer. There are different kinds of malware that can hurt <a href="/wiki/Computer" title="Computer">computers</a>, such as <a href="/wiki/Computer_virus" title="Computer virus">viruses</a>, <a href="/wiki/Trojan_horse_(computing)" title="Trojan horse (computing)">Trojan horses</a>, <a href="/wiki/Spyware" title="Spyware">spyware</a> and <a href="/wiki/Ransomware" title="Ransomware">ransomware</a>. These programs can steal passwords, delete files, collect personal information, or even stop a computer from working at all. <a href="/wiki/Computer_security" title="Computer security">Computer security</a> or <a href="/wiki/Anti-malware" class="mw-redirect" title="Anti-malware">anti-malware</a> software is usually good at stopping malware from installing itself. When security software is not installed, malware can get into the computer. Getting rid of malware can be difficult, even when using programs designed to remove it. </p><p>The term "malware" refers only to software that is made for malicious purposes and works against users' expectations — and so does not include applications that may do unintended harm due to <a href="/wiki/Software_bug" title="Software bug">software bugs</a>. </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="History">History</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Malware&veaction=edit&section=1" title="Change section: History" class="mw-editsection-visualeditor"><span>change</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Malware&action=edit&section=1" title="Edit section's source code: History"><span>change source</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>People first started writing malware in the 1970s and early 1980s. Computers were very simple then. They did not have any interesting information for malware to take. Instead, people wrote malware for fun<sup id="cite_ref-1" class="reference"><a href="#cite_note-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> or just to show that they could.<sup id="cite_ref-2" class="reference"><a href="#cite_note-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> Even the most common piece of malware from this time did not do damage to people's computers.<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> In fact, malware was so rare that the word "malware" was not <a href="/wiki/Neologism" title="Neologism">coined</a> until 1990.<sup id="cite_ref-4" class="reference"><a href="#cite_note-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup> </p><p>More people started using the computers in the late 1990s and early 2000s. Computers were getting more complex and faster.<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> People saw that they could use malware to get useful information now, like passwords and <a href="/wiki/Credit_card" title="Credit card">credit card</a> information. So, more <a href="/wiki/Programmer" title="Programmer">programmers</a> started writing malware. The number of malware programs on the <a href="/wiki/Internet" title="Internet">Internet</a> has grown very quickly ever since then the late 1990s and is still growing today.<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> Experts think that 31.5% of the world's computers have some type of malware installed.<sup id="cite_ref-panda_7-0" class="reference"><a href="#cite_note-panda-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="Purposes">Purposes</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Malware&veaction=edit&section=2" title="Change section: Purposes" class="mw-editsection-visualeditor"><span>change</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Malware&action=edit&section=2" title="Edit section's source code: Purposes"><span>change source</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>The main reason people write malware is to hurt others and make money, usually by stealing or deleting important information. The <a href="/w/index.php?title=Cryptolocker&action=edit&redlink=1" class="new" title="Cryptolocker (not yet started)">Cryptolocker</a> computer virus, for example, makes it so a person cannot use their own computer until they pay the malware writers for a <a href="/wiki/Key_(cryptography)" title="Key (cryptography)">software key</a> to unlock it.<sup id="cite_ref-mbamtrojan_8-0" class="reference"><a href="#cite_note-mbamtrojan-8"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup> Another virus, <a href="/wiki/CIH" title="CIH">CIH</a>, tries to make it so the victim can never use their files or turn on their computer again.<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> Malicious <a href="/wiki/Keystroke_logging" title="Keystroke logging">keystroke logging</a> software remembers everything a user types in and gives it to the malware author to read.<sup id="cite_ref-10" class="reference"><a href="#cite_note-10"><span class="cite-bracket">[</span>10<span class="cite-bracket">]</span></a></sup> </p><p>World governments have written malware to hurt their enemies. Experts think that the <a href="/wiki/United_States" title="United States">United States</a> government made a virus named <a href="/wiki/Stuxnet" title="Stuxnet">Stuxnet</a> to stop an important place in <a href="/wiki/Iran" title="Iran">Iran</a> from working.<sup id="cite_ref-11" class="reference"><a href="#cite_note-11"><span class="cite-bracket">[</span>11<span class="cite-bracket">]</span></a></sup> The <a href="/wiki/China" title="China">Chinese</a> government probably used a virus to stop people from protesting its decisions.<sup id="cite_ref-12" class="reference"><a href="#cite_note-12"><span class="cite-bracket">[</span>12<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="How_malware_gets_installed">How malware gets installed</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Malware&veaction=edit&section=3" title="Change section: How malware gets installed" class="mw-editsection-visualeditor"><span>change</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Malware&action=edit&section=3" title="Edit section's source code: How malware gets installed"><span>change source</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>There are a lot of ways malware can get onto someone's computer. One common way is through <a href="/wiki/Email" class="mw-redirect" title="Email">email</a> attachments. These attachments are usually sent from other computers that already have malware on them.<sup id="cite_ref-combofix_13-0" class="reference"><a href="#cite_note-combofix-13"><span class="cite-bracket">[</span>13<span class="cite-bracket">]</span></a></sup> When someone downloads and opens the attachment, the virus installs and uses their computer to send itself to even more people. </p><p>Another way malware installs itself is when a victim gets malware just by going to a website with the malware hidden on it. This is called <a href="/w/index.php?title=Drive-by_download&action=edit&redlink=1" class="new" title="Drive-by download (not yet started)"> drive-by downloading</a>. A user does not have to click anything for their computer to get infected from a drive-by download.<sup id="cite_ref-dbdl_14-0" class="reference"><a href="#cite_note-dbdl-14"><span class="cite-bracket">[</span>14<span class="cite-bracket">]</span></a></sup> This kind of malware attack is usually found on websites that are not used a lot or whose security methods are very old. However, even current websites that people use all the time can host drive-by downloads when someone <a href="/wiki/Hacker" title="Hacker">hacks</a> the site. </p><p>People who write malware also get their programs onto computers by attaching them to real programs that people want. This is most common with <a href="/wiki/Software_piracy" title="Software piracy">pirated programs</a>. This is because the downloader was doing something illegal and cannot complain to the authorities without getting in trouble themselves.<sup id="cite_ref-combofix_13-1" class="reference"><a href="#cite_note-combofix-13"><span class="cite-bracket">[</span>13<span class="cite-bracket">]</span></a></sup> However, some non-piracy websites also put malware (or other unwanted programs that are almost as bad as malware) in a download with real, legal software in a process known as bundling.<sup id="cite_ref-bundling_15-0" class="reference"><a href="#cite_note-bundling-15"><span class="cite-bracket">[</span>15<span class="cite-bracket">]</span></a></sup> Computer security experts complain about websites that bundle real software with malware. Their complaints do not always stop the websites from bundling.<sup id="cite_ref-bundling_15-1" class="reference"><a href="#cite_note-bundling-15"><span class="cite-bracket">[</span>15<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="Kinds_of_malware">Kinds of malware</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Malware&veaction=edit&section=4" title="Change section: Kinds of malware" class="mw-editsection-visualeditor"><span>change</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Malware&action=edit&section=4" title="Edit section's source code: Kinds of malware"><span>change source</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>There are many different kinds of malware. Each acts a different way. </p> <ul><li><a href="/wiki/Computer_virus" title="Computer virus">Viruses</a> are a kind of malware that need a user-run program to work.<sup id="cite_ref-ciscolist_16-0" class="reference"><a href="#cite_note-ciscolist-16"><span class="cite-bracket">[</span>16<span class="cite-bracket">]</span></a></sup> They cannot copy themselves or move from one computer to another without a program to host it. Viruses are very common in pirated programs.<sup id="cite_ref-combofix_13-2" class="reference"><a href="#cite_note-combofix-13"><span class="cite-bracket">[</span>13<span class="cite-bracket">]</span></a></sup> They can harm computers in many different ways, like deleting files and stealing passwords.<sup id="cite_ref-ciscolist_16-1" class="reference"><a href="#cite_note-ciscolist-16"><span class="cite-bracket">[</span>16<span class="cite-bracket">]</span></a></sup></li></ul> <ul><li><a href="/wiki/Computer_worm" title="Computer worm">Worms</a> are a lot like viruses and can cause the same kinds of damage. However, they're able to move through the internet and copy themselves onto computers without help from a host program. This makes them more dangerous than a virus.<sup id="cite_ref-ciscolist_16-2" class="reference"><a href="#cite_note-ciscolist-16"><span class="cite-bracket">[</span>16<span class="cite-bracket">]</span></a></sup> Worms are usually found in emails and drive-by downloads.<sup id="cite_ref-dbdl_14-1" class="reference"><a href="#cite_note-dbdl-14"><span class="cite-bracket">[</span>14<span class="cite-bracket">]</span></a></sup></li></ul> <ul><li><a href="/wiki/Trojan_horse_(computing)" title="Trojan horse (computing)">Trojan horses</a> are a type of harmful software that masquerades as a regular, benign program or utility in order to persuade a victim to install it. A Trojan horse usually carries a hidden destructive function that is activated when the application is started. They need a user to agree to run a program to work and cannot copy themselves from one computer to another.<sup id="cite_ref-kstrojan_17-0" class="reference"><a href="#cite_note-kstrojan-17"><span class="cite-bracket">[</span>17<span class="cite-bracket">]</span></a></sup> However, trojan horses can make the same problems a normal virus can make. They can also allow the malware writer to control the victim's computer, install more malware, steal bank data, and more.<sup id="cite_ref-kstrojan_17-1" class="reference"><a href="#cite_note-kstrojan-17"><span class="cite-bracket">[</span>17<span class="cite-bracket">]</span></a></sup> For example, <a href="/wiki/Ransomware" title="Ransomware">ransomware</a> is a type of trojan horse that stops a victim from using their files until they pay the person who wrote the malware.<sup id="cite_ref-mbamtrojan_8-1" class="reference"><a href="#cite_note-mbamtrojan-8"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup> Experts think that trojan horses are the most common type of malware in existence.<sup id="cite_ref-panda_7-1" class="reference"><a href="#cite_note-panda-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup></li></ul> <ul><li><a href="/wiki/Adware" title="Adware">Adware</a> is a type of malware that earns the program authors money with <a href="/wiki/Advertising" title="Advertising">advertising</a>. These programs show users ads and force them to use websites that make money for the malware writers. Adware will also find personal information about the victim (such as their age, race, and job). This is so the malware authors can sell the information to other people.<sup id="cite_ref-ksadw_18-0" class="reference"><a href="#cite_note-ksadw-18"><span class="cite-bracket">[</span>18<span class="cite-bracket">]</span></a></sup> A user can usually uninstall adware easier than most malware. However, this is still difficult to do without a specially-designed program.<sup id="cite_ref-bleepadw_19-0" class="reference"><a href="#cite_note-bleepadw-19"><span class="cite-bracket">[</span>19<span class="cite-bracket">]</span></a></sup></li></ul> <ul><li><a href="/wiki/Spyware" title="Spyware">Spyware</a> is a more dangerous kind of adware that steals more information from a user. Spyware can steal someone's Internet traffic, account passwords, and anything they have typed into their computers. Spyware is also much harder to uninstall than adware is.<sup id="cite_ref-webospyware_20-0" class="reference"><a href="#cite_note-webospyware-20"><span class="cite-bracket">[</span>20<span class="cite-bracket">]</span></a></sup></li></ul> <div class="mw-heading mw-heading2"><h2 id="Why_computers_get_malware">Why computers get malware</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Malware&veaction=edit&section=5" title="Change section: Why computers get malware" class="mw-editsection-visualeditor"><span>change</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Malware&action=edit&section=5" title="Edit section's source code: Why computers get malware"><span>change source</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>There are a few reasons why computers get programs a user didn't mean to install. One common reason is because of regular programs that have <a href="/wiki/Software_bug" title="Software bug">software bugs</a>. Malware can use bugs, such as a <a href="/wiki/Buffer_overflow" title="Buffer overflow">buffer overflow</a>, to make a program do something it was not designed to do.<sup id="cite_ref-21" class="reference"><a href="#cite_note-21"><span class="cite-bracket">[</span>21<span class="cite-bracket">]</span></a></sup> Malware can also get onto a computer if it tricks a user into putting it there themselves. This can happen when a user plugs in a <a href="/wiki/USB_flash_drive" title="USB flash drive">USB flash drive</a> that has a virus on it already.<sup id="cite_ref-cnetusb_22-0" class="reference"><a href="#cite_note-cnetusb-22"><span class="cite-bracket">[</span>22<span class="cite-bracket">]</span></a></sup> Malware also commonly uses <a href="/wiki/Social_engineering" class="mw-redirect" title="Social engineering">social engineering</a> to get users to run it, like pretending to be an important email attachment for work. Some malware even pretends to be an <a href="/wiki/Anti-malware" class="mw-redirect" title="Anti-malware">anti-malware</a> program to get people to run it.<sup id="cite_ref-23" class="reference"><a href="#cite_note-23"><span class="cite-bracket">[</span>23<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="How_malware_is_stopped">How malware is stopped</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Malware&veaction=edit&section=6" title="Change section: How malware is stopped" class="mw-editsection-visualeditor"><span>change</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Malware&action=edit&section=6" title="Edit section's source code: How malware is stopped"><span>change source</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Since malware is such a big problem, many companies make programs to try to stop it. These anti-malware programs have a lot of different ways to find malware. One is <a href="/w/index.php?title=Static_analysis&action=edit&redlink=1" class="new" title="Static analysis (not yet started)">static analysis</a>, which looks at the <a href="/wiki/Source_code" title="Source code">source code</a> of a program before it is run. Then, if the program is similar to malware the static analysis program has seen before, the anti-malware program will stop the code from running.<sup id="cite_ref-ksheuristic_24-0" class="reference"><a href="#cite_note-ksheuristic-24"><span class="cite-bracket">[</span>24<span class="cite-bracket">]</span></a></sup> Another way of finding malware is <a href="/w/index.php?title=Dynamic_analysis&action=edit&redlink=1" class="new" title="Dynamic analysis (not yet started)">dynamic analysis</a>. Dynamic analysis runs only part of a program it is checking. If this part of the program tries to do anything that could be bad or harmful, the anti-malware program will not let the program run.<sup id="cite_ref-ksheuristic_24-1" class="reference"><a href="#cite_note-ksheuristic-24"><span class="cite-bracket">[</span>24<span class="cite-bracket">]</span></a></sup> </p><p>Malware can also be stopped without a program. This can be done by not letting a computer connect to the Internet or other computers, called creating an <a href="/wiki/Air_gap_(networking)" title="Air gap (networking)">air gap</a>.<sup id="cite_ref-25" class="reference"><a href="#cite_note-25"><span class="cite-bracket">[</span>25<span class="cite-bracket">]</span></a></sup> However, these computers can still get malware if someone puts it there another way. One example is when someone plugs in a Universal Serial Bus (USB) drive that was already plugged into a computer with a virus.<sup id="cite_ref-cnetusb_22-1" class="reference"><a href="#cite_note-cnetusb-22"><span class="cite-bracket">[</span>22<span class="cite-bracket">]</span></a></sup> </p> <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=Malware&veaction=edit&section=7" title="Change section: References" class="mw-editsection-visualeditor"><span>change</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Malware&action=edit&section=7" title="Edit section's source code: References"><span>change source</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r9724317">.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 mw-references-columns"><ol class="references"> <li id="cite_note-1"><span class="mw-cite-backlink"><a href="#cite_ref-1">↑</a></span> <span class="reference-text"><style data-mw-deduplicate="TemplateStyles:r9724332">.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 id="1" class="citation web cs1">Leyden, John. <a rel="nofollow" class="external text" href="https://www.theregister.co.uk/2012/12/14/first_virus_elk_cloner_creator_interviewed/">"The 30-year-old prank that became the first computer virus"</a>. <i>The Register</i>. The Register<span class="reference-accessdate">. Retrieved <span class="nowrap">1 November</span> 2014</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=The+Register&rft.atitle=The+30-year-old+prank+that+became+the+first+computer+virus&rft.aulast=Leyden&rft.aufirst=John&rft_id=https%3A%2F%2Fwww.theregister.co.uk%2F2012%2F12%2F14%2Ffirst_virus_elk_cloner_creator_interviewed%2F&rfr_id=info%3Asid%2Fsimple.wikipedia.org%3AMalware" class="Z3988"></span></span> </li> <li id="cite_note-2"><span class="mw-cite-backlink"><a href="#cite_ref-2">↑</a></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r9724332"><cite id="2" class="citation web cs1">Dalakov, Georgi. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20141213225306/http://history-computer.com/Internet/Maturing/Thomas.html">"First computer virus of Bob Thomas"</a>. <i>History of Computers and Computing</i>. Archived from <a rel="nofollow" class="external text" href="http://history-computer.com/Internet/Maturing/Thomas.html">the original</a> on 13 December 2014<span class="reference-accessdate">. Retrieved <span class="nowrap">1 November</span> 2014</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=History+of+Computers+and+Computing&rft.atitle=First+computer+virus+of+Bob+Thomas&rft.aulast=Dalakov&rft.aufirst=Georgi&rft_id=http%3A%2F%2Fhistory-computer.com%2FInternet%2FMaturing%2FThomas.html&rfr_id=info%3Asid%2Fsimple.wikipedia.org%3AMalware" class="Z3988"></span></span> </li> <li id="cite_note-3"><span class="mw-cite-backlink"><a href="#cite_ref-3">↑</a></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r9724332"><cite id="3" class="citation web cs1">Lee, Timothy. <a rel="nofollow" class="external text" href="https://www.washingtonpost.com/blogs/the-switch/wp/2013/11/01/how-a-grad-student-trying-to-build-the-first-botnet-brought-the-internet-to-its-knees/">"How a grad student trying to build the first botnet brought the Internet to its knees"</a>. <i>The Washington Post</i>. Washington Post Company<span class="reference-accessdate">. Retrieved <span class="nowrap">1 November</span> 2014</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=The+Washington+Post&rft.atitle=How+a+grad+student+trying+to+build+the+first+botnet+brought+the+Internet+to+its+knees&rft.aulast=Lee&rft.aufirst=Timothy&rft_id=https%3A%2F%2Fwww.washingtonpost.com%2Fblogs%2Fthe-switch%2Fwp%2F2013%2F11%2F01%2Fhow-a-grad-student-trying-to-build-the-first-botnet-brought-the-internet-to-its-knees%2F&rfr_id=info%3Asid%2Fsimple.wikipedia.org%3AMalware" class="Z3988"></span></span> </li> <li id="cite_note-4"><span class="mw-cite-backlink"><a href="#cite_ref-4">↑</a></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r9724332"><cite id="CITEREFMessmer" class="citation web cs1">Messmer, Ellen. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20141026155449/http://www.pcworld.com/article/147698/tech.html">"Tech Talk: Where'd it Come From, Anyway?"</a>. <i>PCWorld</i>. IDG Consumer & SMB. Archived from <a rel="nofollow" class="external text" href="http://www.pcworld.com/article/147698/tech.html">the original</a> on 26 October 2014<span class="reference-accessdate">. Retrieved <span class="nowrap">11 November</span> 2014</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=PCWorld&rft.atitle=Tech+Talk%3A+Where%27d+it+Come+From%2C+Anyway%3F&rft.aulast=Messmer&rft.aufirst=Ellen&rft_id=http%3A%2F%2Fwww.pcworld.com%2Farticle%2F147698%2Ftech.html&rfr_id=info%3Asid%2Fsimple.wikipedia.org%3AMalware" class="Z3988"></span></span> </li> <li id="cite_note-5"><span class="mw-cite-backlink"><a href="#cite_ref-5">↑</a></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r9724332"><cite id="CITEREFFile" class="citation web cs1">File, Thom. <a rel="nofollow" class="external text" href="https://www.census.gov/prod/2013pubs/p20-569.pdf">"Computer and Internet Use in the United States"</a> <span class="cs1-format">(PDF)</span>. U.S. Census Bureau<span class="reference-accessdate">. Retrieved <span class="nowrap">11 November</span> 2014</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Computer+and+Internet+Use+in+the+United+States&rft.pub=U.S.+Census+Bureau&rft.aulast=File&rft.aufirst=Thom&rft_id=https%3A%2F%2Fwww.census.gov%2Fprod%2F2013pubs%2Fp20-569.pdf&rfr_id=info%3Asid%2Fsimple.wikipedia.org%3AMalware" class="Z3988"></span></span> </li> <li id="cite_note-6"><span class="mw-cite-backlink"><a href="#cite_ref-6">↑</a></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r9724332"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://www.microsoft.com/security/sir/story/#!10year">"The Evolution of Malware and the Threat Landscape – a 10-Year review"</a>. <i>Microsoft Security Intelligence Report</i>. Microsoft Incorporated<span class="reference-accessdate">. Retrieved <span class="nowrap">11 November</span> 2014</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Microsoft+Security+Intelligence+Report&rft.atitle=The+Evolution+of+Malware+and+the+Threat+Landscape+%E2%80%93+a+10-Year+review&rft_id=http%3A%2F%2Fwww.microsoft.com%2Fsecurity%2Fsir%2Fstory%2F%23%2110year&rfr_id=info%3Asid%2Fsimple.wikipedia.org%3AMalware" class="Z3988"></span></span> </li> <li id="cite_note-panda-7"><span class="mw-cite-backlink">↑ <sup><a href="#cite_ref-panda_7-0">7.0</a></sup> <sup><a href="#cite_ref-panda_7-1">7.1</a></sup></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r9724332"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://mediacenter.pandasecurity.com/mediacenter/wp-content/uploads/2014/07/Annual-Report-PandaLabs-2013.pdf">"Annual Report PandaLabs 2013 Summary"</a> <span class="cs1-format">(PDF)</span>. <i>Panda Labs Reports</i>. Panda Security<span class="reference-accessdate">. Retrieved <span class="nowrap">15 November</span> 2014</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Panda+Labs+Reports&rft.atitle=Annual+Report+PandaLabs+2013+Summary&rft_id=http%3A%2F%2Fmediacenter.pandasecurity.com%2Fmediacenter%2Fwp-content%2Fuploads%2F2014%2F07%2FAnnual-Report-PandaLabs-2013.pdf&rfr_id=info%3Asid%2Fsimple.wikipedia.org%3AMalware" class="Z3988"></span><sup class="noprint Inline-Template"><span style="white-space: nowrap;">[<i><a href="/wiki/Wikipedia:Link_rot" title="Wikipedia:Link rot"><span title=" Dead link since January 2021">permanent dead link</span></a></i>]</span></sup></span> </li> <li id="cite_note-mbamtrojan-8"><span class="mw-cite-backlink">↑ <sup><a href="#cite_ref-mbamtrojan_8-0">8.0</a></sup> <sup><a href="#cite_ref-mbamtrojan_8-1">8.1</a></sup></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r9724332"><cite id="CITEREFCannell" class="citation web cs1">Cannell, Joshua. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20131019174116/http://blog.malwarebytes.org/intelligence/2013/10/CryptoLocker-ransomware-what-you-need-to-know/">"Cryptolocker Ransomware: What You Need To Know"</a>. <i>Malwarebytes Unpacked</i>. Malwarebytes Corporation. Archived from <a rel="nofollow" class="external text" href="https://blog.malwarebytes.org/intelligence/2013/10/cryptolocker-ransomware-what-you-need-to-know/">the original</a> on 19 October 2013<span class="reference-accessdate">. Retrieved <span class="nowrap">1 November</span> 2014</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Malwarebytes+Unpacked&rft.atitle=Cryptolocker+Ransomware%3A+What+You+Need+To+Know&rft.aulast=Cannell&rft.aufirst=Joshua&rft_id=https%3A%2F%2Fblog.malwarebytes.org%2Fintelligence%2F2013%2F10%2Fcryptolocker-ransomware-what-you-need-to-know%2F&rfr_id=info%3Asid%2Fsimple.wikipedia.org%3AMalware" class="Z3988"></span></span> </li> <li id="cite_note-9"><span class="mw-cite-backlink"><a href="#cite_ref-9">↑</a></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r9724332"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://www.f-secure.com/v-descs/cih.shtml">"Virus: DOS/CIH"</a>. <i>F-Secure</i>. F-Secure Corporation<span class="reference-accessdate">. Retrieved <span class="nowrap">1 November</span> 2014</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=F-Secure&rft.atitle=Virus%3A+DOS%2FCIH&rft_id=http%3A%2F%2Fwww.f-secure.com%2Fv-descs%2Fcih.shtml&rfr_id=info%3Asid%2Fsimple.wikipedia.org%3AMalware" class="Z3988"></span></span> </li> <li id="cite_note-10"><span class="mw-cite-backlink"><a href="#cite_ref-10">↑</a></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r9724332"><cite id="CITEREFGrebennikov" class="citation web cs1">Grebennikov, Nikolay. <a rel="nofollow" class="external text" href="http://securelist.com/analysis/publications/36138/keyloggers-how-they-work-and-how-to-detect-them-part-1/">"Keyloggers: How they work and how to detect them (Part 1)"</a>. <i>Securelist</i>. Kaspersky Labs<span class="reference-accessdate">. Retrieved <span class="nowrap">11 November</span> 2014</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Securelist&rft.atitle=Keyloggers%3A+How+they+work+and+how+to+detect+them+%28Part+1%29&rft.aulast=Grebennikov&rft.aufirst=Nikolay&rft_id=http%3A%2F%2Fsecurelist.com%2Fanalysis%2Fpublications%2F36138%2Fkeyloggers-how-they-work-and-how-to-detect-them-part-1%2F&rfr_id=info%3Asid%2Fsimple.wikipedia.org%3AMalware" class="Z3988"></span></span> </li> <li id="cite_note-11"><span class="mw-cite-backlink"><a href="#cite_ref-11">↑</a></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r9724332"><cite id="CITEREFKushner" class="citation web cs1">Kushner, David. <a rel="nofollow" class="external text" href="http://spectrum.ieee.org/telecom/security/the-real-story-of-stuxnet">"The Real Story of Stuxnet"</a>. <i>IEEE Spectrum</i>. IEEE<span class="reference-accessdate">. Retrieved <span class="nowrap">1 November</span> 2014</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=IEEE+Spectrum&rft.atitle=The+Real+Story+of+Stuxnet&rft.aulast=Kushner&rft.aufirst=David&rft_id=http%3A%2F%2Fspectrum.ieee.org%2Ftelecom%2Fsecurity%2Fthe-real-story-of-stuxnet&rfr_id=info%3Asid%2Fsimple.wikipedia.org%3AMalware" class="Z3988"></span></span> </li> <li id="cite_note-12"><span class="mw-cite-backlink"><a href="#cite_ref-12">↑</a></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r9724332"><cite id="CITEREFGreenberg" class="citation web cs1">Greenberg, Andy. <a rel="nofollow" class="external text" href="https://www.forbes.com/sites/andygreenberg/2013/04/01/evidence-mounts-that-chinese-government-hackers-spread-android-malware/">"Evidence Mounts That Chinese Government Hackers Spread Android Malware"</a>. <i>Forbes</i>. Forbes Media<span class="reference-accessdate">. Retrieved <span class="nowrap">1 November</span> 2014</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Forbes&rft.atitle=Evidence+Mounts+That+Chinese+Government+Hackers+Spread+Android+Malware&rft.aulast=Greenberg&rft.aufirst=Andy&rft_id=https%3A%2F%2Fwww.forbes.com%2Fsites%2Fandygreenberg%2F2013%2F04%2F01%2Fevidence-mounts-that-chinese-government-hackers-spread-android-malware%2F&rfr_id=info%3Asid%2Fsimple.wikipedia.org%3AMalware" class="Z3988"></span></span> </li> <li id="cite_note-combofix-13"><span class="mw-cite-backlink">↑ <sup><a href="#cite_ref-combofix_13-0">13.0</a></sup> <sup><a href="#cite_ref-combofix_13-1">13.1</a></sup> <sup><a href="#cite_ref-combofix_13-2">13.2</a></sup></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r9724332"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://web.archive.org/web/20141029230139/http://www.combofix.org/how-malware-attacks-and-spreads-in-your-computer.php">"How Malware Attacks And Spreads In Your Computer"</a>. <i>Combofix</i>. Combofix. Archived from <a rel="nofollow" class="external text" href="http://www.combofix.org/how-malware-attacks-and-spreads-in-your-computer.php">the original</a> on 29 October 2014<span class="reference-accessdate">. Retrieved <span class="nowrap">2 November</span> 2014</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Combofix&rft.atitle=How+Malware+Attacks+And+Spreads+In+Your+Computer&rft_id=http%3A%2F%2Fwww.combofix.org%2Fhow-malware-attacks-and-spreads-in-your-computer.php&rfr_id=info%3Asid%2Fsimple.wikipedia.org%3AMalware" class="Z3988"></span></span> </li> <li id="cite_note-dbdl-14"><span class="mw-cite-backlink">↑ <sup><a href="#cite_ref-dbdl_14-0">14.0</a></sup> <sup><a href="#cite_ref-dbdl_14-1">14.1</a></sup></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r9724332"><cite id="CITEREFSiciliano" class="citation web cs1">Siciliano, Robert. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20141105221938/http://blogs.mcafee.com/consumer/drive-by-download">"What is a "Drive-By" Download?"</a>. <i>McAfee Blog Central</i>. McAfee Incorporated. Archived from <a rel="nofollow" class="external text" href="http://blogs.mcafee.com/consumer/drive-by-download">the original</a> on 5 November 2014<span class="reference-accessdate">. Retrieved <span class="nowrap">2 November</span> 2014</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=McAfee+Blog+Central&rft.atitle=What+is+a+%E2%80%9CDrive-By%E2%80%9D+Download%3F&rft.aulast=Siciliano&rft.aufirst=Robert&rft_id=http%3A%2F%2Fblogs.mcafee.com%2Fconsumer%2Fdrive-by-download&rfr_id=info%3Asid%2Fsimple.wikipedia.org%3AMalware" class="Z3988"></span></span> </li> <li id="cite_note-bundling-15"><span class="mw-cite-backlink">↑ <sup><a href="#cite_ref-bundling_15-0">15.0</a></sup> <sup><a href="#cite_ref-bundling_15-1">15.1</a></sup></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r9724332"><cite id="CITEREFLemos" class="citation web cs1">Lemos, Robert. <a rel="nofollow" class="external text" href="http://www.infoworld.com/article/2618688/antimalware/security-pros-slam-cnet-download-com-s-bundling.html">"Security pros slam Cnet Download.com's bundling"</a>. <i>InfoWorld</i>. InfoWorld Incorporated<span class="reference-accessdate">. Retrieved <span class="nowrap">2 November</span> 2014</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=InfoWorld&rft.atitle=Security+pros+slam+Cnet+Download.com%27s+bundling&rft.aulast=Lemos&rft.aufirst=Robert&rft_id=http%3A%2F%2Fwww.infoworld.com%2Farticle%2F2618688%2Fantimalware%2Fsecurity-pros-slam-cnet-download-com-s-bundling.html&rfr_id=info%3Asid%2Fsimple.wikipedia.org%3AMalware" class="Z3988"></span></span> </li> <li id="cite_note-ciscolist-16"><span class="mw-cite-backlink">↑ <sup><a href="#cite_ref-ciscolist_16-0">16.0</a></sup> <sup><a href="#cite_ref-ciscolist_16-1">16.1</a></sup> <sup><a href="#cite_ref-ciscolist_16-2">16.2</a></sup></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r9724332"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://www.cisco.com/web/about/security/intelligence/virus-worm-diffs.html">"What Is the Difference: Viruses, Worms, Trojans, and Bots?"</a>. <i>Cisco</i>. Cisco Systems, Incorporated<span class="reference-accessdate">. Retrieved <span class="nowrap">3 November</span> 2014</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Cisco&rft.atitle=What+Is+the+Difference%3A+Viruses%2C+Worms%2C+Trojans%2C+and+Bots%3F&rft_id=http%3A%2F%2Fwww.cisco.com%2Fweb%2Fabout%2Fsecurity%2Fintelligence%2Fvirus-worm-diffs.html&rfr_id=info%3Asid%2Fsimple.wikipedia.org%3AMalware" class="Z3988"></span></span> </li> <li id="cite_note-kstrojan-17"><span class="mw-cite-backlink">↑ <sup><a href="#cite_ref-kstrojan_17-0">17.0</a></sup> <sup><a href="#cite_ref-kstrojan_17-1">17.1</a></sup></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r9724332"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://www.kaspersky.com/internet-security-center/threats/trojans">"What is a Trojan Virus?"</a>. <i>Kaspersky Lab</i>. Kaspersky Lab<span class="reference-accessdate">. Retrieved <span class="nowrap">3 November</span> 2014</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Kaspersky+Lab&rft.atitle=What+is+a+Trojan+Virus%3F&rft_id=http%3A%2F%2Fwww.kaspersky.com%2Finternet-security-center%2Fthreats%2Ftrojans&rfr_id=info%3Asid%2Fsimple.wikipedia.org%3AMalware" class="Z3988"></span></span> </li> <li id="cite_note-ksadw-18"><span class="mw-cite-backlink"><a href="#cite_ref-ksadw_18-0">↑</a></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r9724332"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://www.kaspersky.com/internet-security-center/threats/adware">"What is Adware?"</a>. <i>Kaspersky Labs</i>. Kaspersky Labs<span class="reference-accessdate">. Retrieved <span class="nowrap">3 November</span> 2014</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Kaspersky+Labs&rft.atitle=What+is+Adware%3F&rft_id=http%3A%2F%2Fwww.kaspersky.com%2Finternet-security-center%2Fthreats%2Fadware&rfr_id=info%3Asid%2Fsimple.wikipedia.org%3AMalware" class="Z3988"></span></span> </li> <li id="cite_note-bleepadw-19"><span class="mw-cite-backlink"><a href="#cite_ref-bleepadw_19-0">↑</a></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r9724332"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://www.bleepingcomputer.com/virus-removal/adware">"Adware"</a>. <i>BleepingComputer</i>. Bleeping Computer LLC<span class="reference-accessdate">. Retrieved <span class="nowrap">3 November</span> 2014</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=BleepingComputer&rft.atitle=Adware&rft_id=http%3A%2F%2Fwww.bleepingcomputer.com%2Fvirus-removal%2Fadware&rfr_id=info%3Asid%2Fsimple.wikipedia.org%3AMalware" class="Z3988"></span></span> </li> <li id="cite_note-webospyware-20"><span class="mw-cite-backlink"><a href="#cite_ref-webospyware_20-0">↑</a></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r9724332"><cite id="CITEREFBeal" class="citation web cs1">Beal, Vangie. <a rel="nofollow" class="external text" href="http://www.webopedia.com/DidYouKnow/Internet/spyware.asp">"The Difference Between Adware & Spyware"</a>. <i>WebOPedia</i>. Quinstreet Incorporated<span class="reference-accessdate">. Retrieved <span class="nowrap">3 November</span> 2014</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=WebOPedia&rft.atitle=The+Difference+Between+Adware+%26+Spyware&rft.aulast=Beal&rft.aufirst=Vangie&rft_id=http%3A%2F%2Fwww.webopedia.com%2FDidYouKnow%2FInternet%2Fspyware.asp&rfr_id=info%3Asid%2Fsimple.wikipedia.org%3AMalware" class="Z3988"></span></span> </li> <li id="cite_note-21"><span class="mw-cite-backlink"><a href="#cite_ref-21">↑</a></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r9724332"><cite id="CITEREFSchwarz" class="citation web cs1">Schwarz, Thomas. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20141105154619/http://www.cse.scu.edu/~tschwarz/coen152_05/Lectures/BufferOverflow.html">"Buffer Overflow Attack"</a>. <i>COEN 152 Computer Forensics</i>. COEN, SCU. Archived from <a rel="nofollow" class="external text" href="http://www.cse.scu.edu/~tschwarz/coen152_05/Lectures/BufferOverflow.html">the original</a> on 5 November 2014<span class="reference-accessdate">. Retrieved <span class="nowrap">6 November</span> 2014</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=COEN+152+Computer+Forensics&rft.atitle=Buffer+Overflow+Attack&rft.aulast=Schwarz&rft.aufirst=Thomas&rft_id=http%3A%2F%2Fwww.cse.scu.edu%2F~tschwarz%2Fcoen152_05%2FLectures%2FBufferOverflow.html&rfr_id=info%3Asid%2Fsimple.wikipedia.org%3AMalware" class="Z3988"></span></span> </li> <li id="cite_note-cnetusb-22"><span class="mw-cite-backlink">↑ <sup><a href="#cite_ref-cnetusb_22-0">22.0</a></sup> <sup><a href="#cite_ref-cnetusb_22-1">22.1</a></sup></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r9724332"><cite id="CITEREFMills" class="citation web cs1">Mills, Elinor. <a rel="nofollow" class="external text" href="https://www.cnet.com/uk/news/usb-devices-spreading-viruses/">"USB devices spreading viruses"</a>. <i>CNET</i>. CBS Interactive Incorporated<span class="reference-accessdate">. Retrieved <span class="nowrap">6 November</span> 2014</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=CNET&rft.atitle=USB+devices+spreading+viruses&rft.aulast=Mills&rft.aufirst=Elinor&rft_id=http%3A%2F%2Fwww.cnet.com%2Fuk%2Fnews%2Fusb-devices-spreading-viruses%2F&rfr_id=info%3Asid%2Fsimple.wikipedia.org%3AMalware" class="Z3988"></span></span> </li> <li id="cite_note-23"><span class="mw-cite-backlink"><a href="#cite_ref-23">↑</a></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r9724332"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://usa.kaspersky.com/internet-security-center/threats/malware-social-engineering">"Social Engineering"</a>. <i>Kaspersky Labs</i>. Kaspersky Labs<span class="reference-accessdate">. Retrieved <span class="nowrap">6 November</span> 2014</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Kaspersky+Labs&rft.atitle=Social+Engineering&rft_id=http%3A%2F%2Fusa.kaspersky.com%2Finternet-security-center%2Fthreats%2Fmalware-social-engineering&rfr_id=info%3Asid%2Fsimple.wikipedia.org%3AMalware" class="Z3988"></span></span> </li> <li id="cite_note-ksheuristic-24"><span class="mw-cite-backlink">↑ <sup><a href="#cite_ref-ksheuristic_24-0">24.0</a></sup> <sup><a href="#cite_ref-ksheuristic_24-1">24.1</a></sup></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r9724332"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://support.kaspersky.com/6324">"Heuristic analysis in Kaspersky Internet Security 2012"</a>. <i>Kaspersky Lab</i>. Kaspersky Lab<span class="reference-accessdate">. Retrieved <span class="nowrap">4 November</span> 2014</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Kaspersky+Lab&rft.atitle=Heuristic+analysis+in+Kaspersky+Internet+Security+2012&rft_id=http%3A%2F%2Fsupport.kaspersky.com%2F6324&rfr_id=info%3Asid%2Fsimple.wikipedia.org%3AMalware" class="Z3988"></span></span> </li> <li id="cite_note-25"><span class="mw-cite-backlink"><a href="#cite_ref-25">↑</a></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r9724332"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://www.techopedia.com/definition/17037/air-gap">"Air Gap"</a>. <i>Technopedia</i>. Janalta Interactive Incorporated<span class="reference-accessdate">. Retrieved <span class="nowrap">6 November</span> 2014</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Technopedia&rft.atitle=Air+Gap&rft_id=http%3A%2F%2Fwww.techopedia.com%2Fdefinition%2F17037%2Fair-gap&rfr_id=info%3Asid%2Fsimple.wikipedia.org%3AMalware" class="Z3988"></span></span> </li> </ol></div></div> <div class="navbox-styles"><style data-mw-deduplicate="TemplateStyles:r9122542">.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 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href="https://simple.wikipedia.org/w/index.php?title=Template:Malware&action=edit"><abbr title="Edit this template">e</abbr></a></li></ul></div><div id="Malware_topics109" style="font-size:114%;margin:0 4em"><a class="mw-selflink selflink">Malware</a> topics</div></th></tr><tr><th scope="row" class="navbox-group" style="width:1%">Infectious malware</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_virus" title="Computer virus">Computer virus</a></li> <li><a href="/wiki/Computer_worm" title="Computer worm">Computer worm</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Concealment</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/Backdoor_(computing)" title="Backdoor (computing)">Backdoor</a></li> <li><a href="/wiki/Clickjacking" title="Clickjacking">Clickjacking</a></li> <li><a href="/wiki/Man-in-the-middle_attack" title="Man-in-the-middle attack">Man-in-the-middle</a></li> <li><a href="/wiki/Rootkit" title="Rootkit">Rootkit</a></li> <li><a href="/wiki/Trojan_horse_(computing)" title="Trojan horse (computing)">Trojan horse</a></li> <li><a href="/wiki/Zombie_(computing)" title="Zombie (computing)">Zombie computer</a></li> <li><a href="/w/index.php?title=Man-in-the-browser&action=edit&redlink=1" class="new" title="Man-in-the-browser (not yet started)">Man-in-the-browser</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Malware for profit</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/Adware" title="Adware">Adware</a></li> <li><a href="/wiki/Botnet" title="Botnet">Botnet</a></li> <li><a href="/w/index.php?title=Crimeware&action=edit&redlink=1" class="new" title="Crimeware (not yet started)">Crimeware</a></li> <li><a href="/w/index.php?title=Fleeceware&action=edit&redlink=1" class="new" title="Fleeceware (not yet started)">Fleeceware</a></li> <li><a href="/w/index.php?title=Form_grabbing&action=edit&redlink=1" class="new" title="Form grabbing (not yet started)">Form grabbing</a></li> <li><a href="/wiki/Dialer#Fraudulent_dialer" title="Dialer">Fraudulent dialer</a></li> <li><a href="/wiki/Infostealer" title="Infostealer">Infostealer</a></li> <li><a href="/wiki/Keystroke_logging" title="Keystroke logging">Keystroke logging</a></li> <li><a href="/wiki/Internet_bot#Malicious_purposes" title="Internet bot">Malbot</a></li> <li><a href="/w/index.php?title=Privacy-invasive_software&action=edit&redlink=1" class="new" title="Privacy-invasive software (not yet started)">Privacy-invasive software</a></li> <li><a href="/wiki/Ransomware" title="Ransomware">Ransomware</a></li> <li><a href="/w/index.php?title=Rogue_security_software&action=edit&redlink=1" class="new" title="Rogue security software (not yet started)">Rogue security software</a></li> <li><a href="/w/index.php?title=Scareware&action=edit&redlink=1" class="new" title="Scareware (not yet started)">Scareware</a></li> <li><a href="/wiki/Spyware" title="Spyware">Spyware</a></li> <li><a href="/w/index.php?title=Web_threat&action=edit&redlink=1" class="new" title="Web threat (not yet started)">Web threats</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">By operating system</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="/w/index.php?title=Category:Android_(operating_system)_malware&action=edit&redlink=1" class="new" title="Category:Android (operating system) malware (not yet started)">Android malware</a></li> <li><a href="/w/index.php?title=Category:Classic_Mac_OS_viruses&action=edit&redlink=1" class="new" title="Category:Classic Mac OS viruses (not yet started)">Classic Mac OS viruses</a></li> <li><a href="/w/index.php?title=Category:IOS_malware&action=edit&redlink=1" class="new" title="Category:IOS malware (not yet started)">iOS malware</a></li> <li><a href="/w/index.php?title=Linux_malware&action=edit&redlink=1" class="new" title="Linux malware (not yet started)">Linux malware</a></li> <li><a href="/w/index.php?title=Category:MacOS_malware&action=edit&redlink=1" class="new" title="Category:MacOS malware (not yet started)">MacOS malware</a></li> <li><a href="/w/index.php?title=Macro_virus&action=edit&redlink=1" class="new" title="Macro virus (not yet started)">Macro virus</a></li> <li><a href="/w/index.php?title=Mobile_malware&action=edit&redlink=1" class="new" title="Mobile malware (not yet started)">Mobile malware</a></li> <li><a href="/w/index.php?title=Palm_OS_viruses&action=edit&redlink=1" class="new" title="Palm OS viruses (not yet started)">Palm OS viruses</a></li> <li><a href="/w/index.php?title=HyperCard_viruses&action=edit&redlink=1" class="new" title="HyperCard viruses (not yet started)">HyperCard viruses</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Protection</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="/w/index.php?title=Anti-keylogger&action=edit&redlink=1" class="new" title="Anti-keylogger (not yet started)">Anti-keylogger</a></li> <li><a href="/wiki/Antivirus_software" title="Antivirus software">Antivirus software</a></li> <li><a href="/w/index.php?title=Browser_security&action=edit&redlink=1" class="new" title="Browser security (not yet started)">Browser security</a></li> <li><a href="/w/index.php?title=Data_loss_prevention_software&action=edit&redlink=1" class="new" title="Data loss prevention software (not yet started)">Data loss prevention software</a></li> <li><a href="/w/index.php?title=Defensive_computing&action=edit&redlink=1" class="new" title="Defensive computing (not yet started)">Defensive computing</a></li> <li><a href="/w/index.php?title=Firewall_(computing)&action=edit&redlink=1" class="new" title="Firewall (computing) (not yet started)">Firewall</a></li> <li><a href="/w/index.php?title=Internet_security&action=edit&redlink=1" class="new" title="Internet security (not yet started)">Internet security</a></li> <li><a href="/w/index.php?title=Intrusion_detection_system&action=edit&redlink=1" class="new" title="Intrusion detection system (not yet started)">Intrusion detection system</a></li> <li><a href="/w/index.php?title=Mobile_security&action=edit&redlink=1" class="new" title="Mobile security (not yet started)">Mobile security</a></li> <li><a href="/w/index.php?title=Network_security&action=edit&redlink=1" class="new" title="Network security (not yet started)">Network security</a></li></ul> </div></td></tr><tr><th scope="row" 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