Windows Defender is a high-performing antivirus program that outperforms industry standards. AV-Test's Windows antivirus list reports Windows Defender's strong performance in protection.

Tech expert Kurt “CyberGuy" Knutsson says a tech support scam used a fake Windows Defender pop-up, tricking the victim to ...

Microsoft has confirmed a critical vulnerability in Windows Defender that could leak file content data but advised users to do nothing—here’s why.

Ransomware is nasty stuff. This type of malware encrypts files on your PC so that you can’t access them—unless you pay the ...

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Phishing Protection in Windows 11 used to turn off on reboot, especially when using a PIN, but this week's security release ...

"Improper authorization of an index that contains sensitive information from a Global Files search in Windows Defender allows an authorized attacker to disclose information over a network," the ...

As Windows 10 market share rises, a new warning reveals the security dangers ahead—here's what Microsoft users need to know.

Windows Security will send notifications with critical information about the health and security of your device. You can specify which informational notifications you want. By default, you will be ...

Here’s what she described: "I received a pop-up that froze my computer and read, ‘Access to this system is blocked for security reasons’ from Windows Defender Security Center. It came with ...

Microsoft Defender, which is built into Windows, can do this too. (Microsoft changed the name from Windows Defender several years ago, but it’s the same program.) Some antivirus suites also run ...