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.

Windows is far better today at protecting your security out of the box compared to how it once was, but Windows Security and associated tools still aren’t perfect. You need to look out for threats ...

Most users are familiar with Windows Defender (the antivirus tool built into Windows Security), which continuously monitors the system for suspicious software activity and also identifies and blocks ...

On October 14, 2025, Microsoft officially ended support for Windows 10. Although they gave users ample time to switch to Windows 11, millions still rely on Windows 10 and cannot upgrade to the new OS ...

Update, March 31, 2025: This story, originally published March 29, has been updated with an explanation of LOLBINS as well as further technical information regarding the Windows Defender Application ...

It's usually $199.