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.

ZDNET tested the best antivirus software on the market, with support for multiple operating systems, VPNs, and robust protection.

With the ever-growing threat of malware, ransomware, and phishing scams, a solid security app is essential for any Windows PC, even for savvy internet users. While Windows 11 comes with built-in ...