As a member of the CCnet community, practicing safe computing is a very good thing. Safe computing means taking steps to help prevent the infection of CCnet desktop computers with computer viruses.
Computer viruses are, in their most innocuous form, a type of Internet vandalism.
Some viruses cause your computer to display or play an obscenity on a random basis. I saw one virus that simply caused the computer to start laughing hysterically for no reason. But there are also computer viruses designed to damage the information on the computer or even the computer hardware itself. Like a biological virus, you don't know about it until you've got it. The way to avoid getting a computer virus is to never copy a virus-infected file to your computer.