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.

Firmware is the low-level software that is deeply integrated into the hardware of your device. It sits beneath higher-level software and your PC’s hardware and acts as a kind of bridge running the ...

SEATTLE -- Microsoft Corp. said Thursday it 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, ...

The firewall is one of the most important security features in a computer environment. In the classic sense, a firewall is set up on an appliance, such as a computer that fulfills just a single, ...

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 ...