Microsoft Defender isn't bad, but it's not enough to fully protect your PC. You don't have to pay extra, though—just use one of the top free antivirus apps we've tested.

Much like the best password protector services out there, investing in antivirus software isn’t as expensive as you would think — and it provides a safety net for your online data. Not to mention, ...

All products featured here are independently selected by our editors and writers. If you buy something through links on our site, Mashable may earn an affiliate commission. This content originally ...

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 ...

This is an important one. Some free antivirus software programs claim they will offer real-time monitoring when you use them. This means that as you scroll on your phone or computer, or download items ...

Add Yahoo as a preferred source to see more of our stories on Google. Ever hear the phrase “spread like a virus”? We quite literally witnessed it the past few years. Like biological viruses, computer ...

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, ...

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 ...