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Line 153: === Heuristics === Many viruses start as a single infection and through either [[~~Mutation~~Polymorphic ~~(genetic algorithm)~~code\|mutation]] or refinements by other attackers, can grow into dozens of slightly different strains, called variants. Generic detection refers to the detection and removal of multiple threats using a single virus definition.<ref>{{cite web \|url=http://www.securelist.com/en/glossary?glossid=189210517 \|title=Generic detection \|access-date=July 11, 2013 \|publisher=Kaspersky \|url-status=dead \|archive-url=https://web.archive.org/web/20131203013651/http://www.securelist.com/en/glossary?glossid=189210517 \|archive-date=December 3, 2013}}</ref> For example, the [[Vundo]] [[trojan horse (computing)\|trojan]] has several family members, depending on the antivirus vendor's classification. [[NortonLifeLock\|Symantec]] classifies members of the Vundo family into two distinct categories, ''Trojan.Vundo'' and ''Trojan.Vundo.B''.<ref>{{cite web\|url = http://www.symantec.com/security_response/writeup.jsp?docid=2004-112111-3912-99\|title = Trojan.Vundo\|access-date = April 14, 2009\|last = Symantec Corporation\|date=February 2009\| archive-url= https://web.archive.org/web/20090409002645/http://www.symantec.com/security_response/writeup.jsp?docid=2004-112111-3912-99\| archive-date= April 9, 2009 \| url-status= live}}</ref><ref>{{cite web\|url = http://www.symantec.com/security_response/writeup.jsp?docid=2005-042810-2611-99\|title = Trojan.Vundo.B\|access-date = April 14, 2009\|last = Symantec Corporation\|date=February 2007\| archive-url= https://web.archive.org/web/20090427160747/http://www.symantec.com/security_response/writeup.jsp?docid=2005-042810-2611-99\| archive-date= April 27, 2009 \| url-status= live}}</ref>

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