Computer viruses can invade your system without you noticing, disrupting its operation and even stealing your data. To protect your device, it's important to know how to recognize signs of infection, ...

This tutorial will guide you on how to run antivirus scans the right way. You'll also learn how to protect your device both before and after a scan. Start by picking the right antivirus software.

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.