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.

Discover the best antivirus software in the US for 2026. Compare top solutions like Bitdefender, Norton, and AVG to protect your devices and data.

Discover the top antivirus software for you. Compare leading programs on security, features, pricing, and ease of use to find the best antivirus protection for your devices and data.

Over 300,000 new types of ransomware and other malicious software are discovered daily, according to the IT security research institute AV-TEST. Computer viruses can slow your devices, create a slew ...

Windows 11 users face growing cyber threats, from ransomware and phishing to occasional zero-day exploits. Choosing the right antivirus is no longer ...

Whether you’ve been shopping the best gaming PC deals or already have a lot invested in one of the best gaming PCs, some antivirus software is the first step in keeping it secure. With a lot of games ...

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 ...

Mike De Socio is a CNET contributor who writes about energy, personal finance, electric vehicles and climate change. He's also the author of the nonfiction book, "Morally Straight: How the Fight for ...