A computer virus is a type of malware that can replicate itself on your computer and spread to other devices. You might be infected with a virus if your computer suddenly starts running more slowly, ...

Computer security technologists are racing to find ways to block ever-more complex computer worms and viruses that burrow into computers -- usually via e-mail -- and wreak havoc on network systems.

If a ransom note suddenly appears on your PC screen, your PC has been hacked. But computer attacks are not always so drastic and clear-cut. For the less obvious cases, you’ll need a finer sense and ...

Computer hackers could create malicious software that crosses the line from technology to biology, crafting viruses that could spread dangerous epidemics, researchers said at Black Hat Europe. “We are ...

Dianna Gunn built her first WordPress website in 2008. Since then, she's poured thousands of hours into understanding how websites and online businesses work. She's shared what she's learned on blogs ...

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 ...