What computer user hasn't trembled when reading an e-mail warning of a virus making the rounds? "There is a computer virus that is being sent across the Internet," a typical message will begin ...

What you need to know about computer viruses. Viruses have been around for decades (the first virus was created in 1971) and is so synonymous with the concept of malware that some people refer to ...

The virus was first discovered in 2007 and infected at least 40,000 computers in the United States, including more than 160 belonging to the National Aeronautics and Space Administration (NASA).