Computer viruses are aptly named programs. Like biological viruses, they are harmful in nature, doing anything from bogging down the internet with excess data to deleting data in an infected computer. Also, just like biological viruses, they are self replicating and contagious in the sense that they can be transmitted from computer to computer.

Before anything else, you should buy or download an anti virus security program. A good security program should be able to do 2 things: One, it should be able to detect and block incoming viruses. Two, the program should be able to detect viruses that actually manage to infect your system, and should be able to clean these viruses out.

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