The best defense against ransomware is avoiding sites and downloads riddled with it ... picks for best antivirus software. In the Windows Security app, click on Virus & threat protection.

If you have received a notification from the Windows Security app on your PC, check using Task manager if the process belongs to Windows Security or if some other app is trying to impersonate it.

Telling the two apart can be confusing because Microsoft Defender is essentially part of Windows Security, but there are also ...