{"id":815,"date":"2013-02-28T21:51:46","date_gmt":"2013-03-01T05:51:46","guid":{"rendered":"http:\/\/e-olio.com\/cknow\/cms\/?p=815"},"modified":"2013-04-16T13:09:07","modified_gmt":"2013-04-16T20:09:07","slug":"how-viruses-infect","status":"publish","type":"post","link":"https:\/\/www.cknow.com\/cms\/vtutor\/how-viruses-infect.html","title":{"rendered":"How Viruses Infect"},"content":{"rendered":"<p>Viruses are sometimes also categorized by how they infect. These categorizations often overlap the categories above and may even be included in the description (e.g., polymorphic file virus). These categories include:<\/p>\n<ul>\n<li><a href=\"https:\/\/www.cknow.com\/cms\/vtutor\/polymorphic-viruses.html\">Polymorphic Viruses<\/a><br \/> Viruses that change their characteristics as they infect.<\/li>\n<\/ul>\n<ul>\n<li><a href=\"https:\/\/www.cknow.com\/cms\/vtutor\/stealth-viruses-and-rootkits.html\">Stealth Viruses and Rootkits<\/a><br \/> Viruses that try to actively hide themselves from anti-virus or system software.<\/li>\n<\/ul>\n<ul>\n<li><a href=\"https:\/\/www.cknow.com\/cms\/vtutor\/fast-and-slow-infectors.html\">Fast and Slow Infectors<\/a><br \/> Viruses that infect in a particular way to try to avoid specific anti-virus software.<\/li>\n<\/ul>\n<ul>\n<li><a href=\"https:\/\/www.cknow.com\/cms\/vtutor\/sparse-infectors.html\">Sparse Infectors<\/a><br \/> Viruses that don&#8217;t infect very often.<\/li>\n<\/ul>\n<ul>\n<li><a href=\"https:\/\/www.cknow.com\/cms\/vtutor\/armored-viruses.html\">Armored Viruses<\/a><br \/> Viruses that are programmed to make disassembly difficult.<\/li>\n<\/ul>\n<ul>\n<li><a href=\"https:\/\/www.cknow.com\/cms\/vtutor\/multipartite-viruses.html\">Multipartite Viruses<\/a><br \/> Viruses that may fall into more than one of the top classes.<\/li>\n<\/ul>\n<ul>\n<li><a href=\"https:\/\/www.cknow.com\/cms\/vtutor\/spacefiller-(cavity)-viruses.html\">Spacefiller (Cavity) Viruses<\/a><br \/> Viruses that attempt to maintain a constant file size when infecting.<\/li>\n<\/ul>\n<ul>\n<li><a href=\"https:\/\/www.cknow.com\/cms\/vtutor\/tunneling-viruses.html\">Tunneling Viruses<\/a><br \/> Viruses that try to &#8220;tunnel&#8221; under anti-virus software while infecting.<\/li>\n<\/ul>\n<ul>\n<li><a href=\"https:\/\/www.cknow.com\/cms\/vtutor\/camouflage-viruses.html\">Camouflage Viruses<\/a><br \/> Viruses that attempted to appear as a benign program to scanners.<\/li>\n<\/ul>\n<ul>\n<li><a href=\"https:\/\/www.cknow.com\/cms\/vtutor\/metamorphic-viruses.html\">Metamorphic Viruses<\/a><br \/> Viruses that change from one form to another.<\/li>\n<\/ul>\n<ul>\n<li><a href=\"https:\/\/www.cknow.com\/cms\/vtutor\/ntfs-ads-viruses.html\">NTFS ADS Viruses<\/a><br \/> Viruses that ride on the alternate data streams in the NT File System.<\/li>\n<\/ul>\n<ul>\n<li><a href=\"https:\/\/www.cknow.com\/cms\/vtutor\/buffer-overflow.html\">Buffer Overflow<\/a><br \/> Viruses can sneak into the system when data overflows a buffer holding it.<\/li>\n<\/ul>\n<ul>\n<li><a href=\"https:\/\/www.cknow.com\/cms\/vtutor\/botnet.html\">Botnet<\/a><br \/> Botnets can spread viruses and other malware automatically or on command.<\/li>\n<\/ul>\n<ul>\n<li><a href=\"https:\/\/www.cknow.com\/cms\/vtutor\/social-engineering.html\">Social Engineering<\/a><br \/> This is probably the fastest way for a virus, worm or Trojan to spread.<\/li>\n<\/ul>\n<ul>\n<li><a href=\"https:\/\/www.cknow.com\/cms\/vtutor\/peer-to-peer-network.html\">Peer-to-Peer Network<\/a><br \/> File sharing carries many risks when you don&#8217;t know where files originate.<\/li>\n<\/ul>\n<ul>\n<li><a href=\"https:\/\/www.cknow.com\/cms\/vtutor\/search-poisoning.html\">Search Poisoning<\/a><br \/> Viruses can be spread by Web pages constructed to be high in search results.<\/li>\n<\/ul>\n<ul>\n<li><a href=\"https:\/\/www.cknow.com\/cms\/vtutor\/trusted-software-or-site.html\">Trusted Software or Site<\/a><br \/> There are many cases of viruses being spread on media or on the websites of major companies.<\/li>\n<\/ul>\n<table style=\"margin: 0pt; width: 100%;\" border=\"0\" cellspacing=\"0\" cellpadding=\"0\" align=\"center\">\n<tbody>\n<tr align=\"center\">\n<td style=\"padding: 0 0 0 0;\" colspan=\"2\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.cknow.com\/cms\/wp-content\/uploads\/2013\/02\/arrow_up.png\" alt=\"Up Arrow\" width=\"16\" height=\"16\" class=\"alignnone size-full wp-image-579\" \/> <a href=\"https:\/\/www.cknow.com\/cms\/vtutor\/types-of-viruses.html\">Types of Viruses<\/a> <img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.cknow.com\/cms\/wp-content\/uploads\/2013\/02\/arrow_up.png\" alt=\"Up Arrow\" width=\"16\" height=\"16\" class=\"alignnone size-full wp-image-579\" \/><\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 0 0 0 0;\" align=\"right\"><a href=\"https:\/\/www.cknow.com\/cms\/vtutor\/vulnerabilities.html\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.cknow.com\/cms\/wp-content\/uploads\/2013\/02\/arrow_prior.gif\" alt=\"Prior Page\" width=\"48\" height=\"32\" class=\"alignnone size-full wp-image-578\" \/><\/a><\/td>\n<td style=\"padding: 0 0 0 0;\" align=\"left\"><a href=\"https:\/\/www.cknow.com\/cms\/vtutor\/polymorphic-viruses.html\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.cknow.com\/cms\/wp-content\/uploads\/2013\/02\/arrow_next.gif\" alt=\"Next Page\" width=\"48\" height=\"32\" class=\"alignnone size-full wp-image-577\" \/><\/a><\/td>\n<\/tr>\n<tr>\n<td style=\"padding-right: 20px; text-align: right; width: 50%;\"><a href=\"https:\/\/www.cknow.com\/cms\/vtutor\/vulnerabilities.html\">Vulnerabilities<\/a> <\/td>\n<td style=\"padding-left: 20px; width: 50%; text-align: left;\"> <a href=\"https:\/\/www.cknow.com\/cms\/vtutor\/polymorphic-viruses.html\">Polymorphic Viruses<\/a><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"excerpt":{"rendered":"<p>Viruses are sometimes also categorized by how they infect. These categorizations often overlap the categories above and may even be included in the description (e.g., polymorphic file virus). These categories include: Polymorphic Viruses Viruses that change their characteristics as they infect. Stealth Viruses and Rootkits Viruses that try to actively hide themselves from anti-virus or [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7],"tags":[],"class_list":["post-815","post","type-post","status-publish","format-standard","hentry","category-vtutor","entry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>How Viruses Infect - C-Know Media<\/title>\n<meta name=\"description\" content=\"Viruses are sometimes also categorized by how they infect.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.cknow.com\/cms\/vtutor\/how-viruses-infect.html\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"How Viruses Infect - 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