Glossary Of Computer Menaces
 Trojan Horses
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These are damaging programs that encourage the user to run them by disguising themselves as legitimate software or other files, like songs or movies. According to the Network Associates security site, they are not technically viruses because they do not replicate. However, a Trojan horse may contain a virus or a worm once it's opened. The name comes from the Trojan war, when a hollow wooden horse was filled with Greek soldiers in a sneak attack.