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.

Bitdefender has long been one of the most popular antivirus tools, protecting more than 500 million users around the globe. In recent years, Bitdefender launched additional security tools to protect ...

Bitdefender has long been one of the most popular antivirus tools, protecting over 500 million users around the globe. In recent years, Bitdefender launched additional security tools to protect you ...

I found Bitdefender's safety tools to be comprehensive, intuitive and highly efficient, earning it our 2025 Editors' Choice award for best antivirus. Bitdefender antivirus features Bitdefender’s core ...