Microsoft Defender isn't enough to fully protect your PC. You don't have to pay extra, though—just use one of the top free ...

Microsoft plans to release a beta test of its free computer security program next week and is on track to launch a finished product in the fall. The program, Microsoft Security Essentials, is designed ...

What's the top security software to keep your PC safe? We've tested, reviewed, and rated more than 40 apps to help you choose ...

Computer security: What is a firewall? How does it work? COMPUTER security has become a growing concern, with criminals using increasingly sophisticated software to steal personal information and ...