If your computer has suddenly slowed down compared to before, keeps freezing, or shows unfamiliar processes in the Task Manager, you should not ignore these signs. They could indicate the presence of ...

After installing the latest Defender Antivirus update for Windows 11, users have started reporting that their operating ...

Malware never sleeps, posing a significant problem for enterprises that can't abide any downtime. As the last line of defense, administrators need to ensure they have a strong grasp on Windows ...

A researcher who calls himself Nightmare Eclipse published a free tool on September 19, 2026, that can quietly stop Windows ...

Microsoft is combining its security information and event management and threat protection capabilities inside Microsoft Defender, creating what the company calls an Integrated Security Operations ...

IntroductionOn September 23, 2026, Microsoft released a preview of a new feature for its security product, Microsoft Defender ...

Microsoft is testing a new Defender for Endpoint capability that will automatically isolate compromised endpoints to thwart attackers' attempts to move laterally across the network. This is now ...

Windows Defender Application Guard is a security tool built into Microsoft Edge that isolates browser sessions from the desktop in a virtual machine to prevent any malicious activity from reaching the ...

We are announcing ISOC in Microsoft Defender: a foundation built for agentic security that brings leading solutions for SIEM and threat protection together.