computer viruses
A computer virus is a computer program that can copy itself and infect a cmputer without permission or knowledge of the user. For instence this means that if you decide to save your work on a floppy disk, cd, or USB drive and then put it on another computer the virus can spread and it can affect both computers. There are many different kinds of viruses and some of them aren't harmful. The different kinds are virus, trojan, and eorms. In my opinion i don't like viruses even though we might have some at home that we don't even know about.
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