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Chapter 12. Viruses and the Damage They Can Do > How a Virus Works and Operates

How a Virus Works and Operates

Despite the fact that there are a great number of known viruses, rarely are two identical. Practically all viruses are unique in the ways they infect computer systems and operate within them. However, most harmful and hot viruses manifest themselves as parasitic, overwriting, or companion viruses.

Pirillo's Virus Tip

The easiest way to be infected by a digital nasty is to open an email attachment. Even if you know the person who sent it, don't trust the file. Have your antivirus program running when you open the attachment.



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