Firewalls scan data sent to your computer for malware and attempt to block files or other data they deem suspicious. Like ...

It's important to know the signs of a virus, so that you can act quickly to get rid of any malware and stay safe in future. A virus is a type of malicious software, or malware, that can replicate ...

From viruses to spyware, we break down the key differences so you know exactly what you're dealing with.

Realizing that your computer is infected with a virus can be a heart-stopping moment, but there's no need to panic. Viruses or other malware can have a devastating effect on your PC, slowing its ...

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, ...

The word 'virus' gets tossed around a lot. Here's what actually counts, what to watch for, and how to stay two clicks ahead A computer virus is a type of program that, much like a regular virus, ...

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 ...

Add Yahoo as a preferred source to see more of our stories on Google. Q: I have a problem with a pop-up that keeps appearing on the lower right-hand side of my Desktop screen. It appears every time I ...