The fast-moving Conficker computer worm, a scourge of the Internet that has infected at least 3 million PCs, is set to spring to life in a new way on Wednesday -- April Fools' Day. That's when many of ...

Forbes contributors publish independent expert analyses and insights. Davey Winder is a veteran cybersecurity writer, hacker and analyst. Updated December 13 with news of a zero-day exploit that ...

A new viruslike attack struck computers, including some in Western New York, Tuesday, and its rapid spread threatened to slow down the Internet. Attorney General John D. Ashcroft warned that the ...

What Is a Computer Virus? A computer virus is a program. Like other programs, it’s defined by what it does, and the big thing a virus does is replicate itself. The virus exists as a collection of ...