May 22, 2025 · Most viruses check to avoid reinfecting an existing host. The problem lies in what we call the payload, the action that the virus takes besides replicating itself.

Dec 11, 2025 · We've tested more than two dozen utilities to help you choose the right antivirus for your needs.

Looking for expert, lab-tested reviews on the latest Antivirus? PCMag's experts have you covered.

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.

Microsoft Defender isn't bad, but it's still not enough to fully protect your PC. You don't have to pay extra, though. We’ve tested and ranked the best free antivirus apps.

The term "computer virus" was coined in the early 1980s, supposedly after a graduate student presented the concept of a program that could "infect" other programs.

Nov 17, 2025 · We've tested more than two dozen utilities to help you choose the right antivirus for your needs.

Jun 3, 2024 · If you’ve taken our advice, you have a powerful antivirus program installed to protect your PC. That tool should fend off any malware attack, be it a bot, a virus, a Trojan, or even …

May 8, 2025 · If you have some cash to spend for security (and peace of mind), the top paid antivirus apps do offer more and better protection, but some free apps come close.

Sep 12, 2024 · As you travel the byways of the web, you may find yourself confronted with a big antivirus warning. Weird, since you neutered your antivirus protection, right? But it’s actually cool.