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.

If you're unsure about a file, you can scan it manually for malware infection, and here's how. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. On ...

Antivirus apps protect your PC's personal information, data, bank accounts, and other sensitive information. We've tested more than two dozen utilities to help you choose the right antivirus for your ...