A security researcher frustrated with Microsoft has released the BlueHammer Windows zero-day exploit, telling the company, “I'm not explaining how this works.” ...

Microsoft announced that it has replaced the default scripting engine JScript with the newer and more secure JScript9Legacy on Windows 11 version 24H2 and later. The decision is driven by security ...

Microsoft’s Windows K2 initiative is mapping and tracking promised fixes to Windows 11, aiming to restore performance, reliability, and user trust. The effort comes amid industry-wide pressure to ...

Although the team with Microsoft moved swiftly to patch the BlueHammer vulnerability, other exploits still threaten Microsoft Defender and Windows users.

Windows 11 hacked three times on day one of PWN2OWN. Update, May 17, 2025: This story, originally published May 16, has been updated with news of another successful Windows 11 hack at the Pwn2Own ...

The leak online of exploit code for an apparent Windows zero-day flaw dubbed "BlueHammer" could be the sign of a larger issue that security researchers face when collaborating with Microsoft on ...

Microsoft is simultaneously advancing its Windows K2 quality initiative, confronting a new security exploit targeting its Phone Link feature, and redefining Bing's search index for AI-generated ...

The April 2026 KB5083769 security update breaks third-party backup applications from multiple vendors on systems running ...

Threat actors are using three publicly available proof-of-concept exploits to attack Microsoft Defender and turn the security platform's primary cleanup and protection functions against organizations ...

PCWorld reports that new AI-powered malware like DeepLoad threatens Windows 11 security by using fileless attacks that bypass traditional antivirus software. This fileless malware tricks users into ...