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Viruses, Trojans (Trojan horse), and Worms can damage your system. Viruses can erase files, and, sometimes, erase your entire hard drive. Trojans can find valuable information and exploit it, resulting in identity theft. Worms are almost the same as viruses, but they have the ability to replicate without authentication. If you use the internet, then you need anti-virus software. Simple as that. It doesn't matter how secure you think you may be, because sometimes you don't even know your computer is a zombie until its too late.

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16y ago

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