Trojan Horse
Trojan horse are kind of like virus. Trojan horse are programs that allows a hacker to run hidden tasks and delete all the programs without you noticing. At first, trojan horse would apear to be useful sofware but at the same time it will also damage once you installed or run it. Some trojan are design to change your destop picture, add weird icons and cause serious damage to your computer. Trojan horse also give acces to other people to look at your systems. Trojan do not dublicate them self like viruses.
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“trojan-recovery.pdf (application/pdf Object).” 1 Dec 2008 <http://www.us-cert.gov/reading_room/trojan-recovery.pdf>.