Antivirus software may already be installed on your computer but here’s what you need to know about how it works and keeps you safe online in the background.

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.

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, ...

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 ...

Q: With all of the new security features in Windows 11, should I still install some form of anti-virus software, and if so, which one? A: Microsoft has definitely stepped up the security features in ...

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, ...

Fake virus alerts are scams designed to make you panic and click on malicious links or download harmful software. Watch out for red flags like poor grammar, weird URLs, flashing warnings, and messages ...

With dubious reports of a nascent malware menace threatening Mac OS X's current status as (for all intents and purposes) a virus-free platform, many readers have inquired about the need for ...