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.

What is a computer virus? To understand what antivirus software does, you need to know what a computer virus is.

Instead of “hardening of the arteries,” public affairs director Ron Nief, of Beloit College, likes to talk about “hardening of the references.” That’s a polite way to say that some of us get so fixed ...

Some computer viruses wreck your computer from behind the scenes. You only know they're there because your computer starts acting weird or your files get wiped out. And sometimes you can tell you ...