A security researcher frustrated with Microsoft has released the BlueHammer Windows zero-day exploit, telling the company, “I ...

The exploit uses an insecure behavior of Windows Defender and a file API to secure system rights. It is still unpatched.

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

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 ...

Forbes contributors publish independent expert analyses and insights. Davey Winder is a veteran cybersecurity writer, hacker and analyst. Update, May 15, 2025: This story, originally published May 14, ...

A security researcher published details of three security vulnerabilities in Windows Defender, and the code used to exploit ...

A new exploit has been found that allows attackers to use Notepad, one of the most trusted applications on Windows, to elevate their privileges to an administrator and bypass security. Experts say ...

Microsoft has released out-of-band (OOB) security updates to patch a critical-severity Windows Server Update Service (WSUS) vulnerability with publicly available proof-of-concept exploit code. WSUS is ...

State-sponsored APTs from North Korea, Iran, Russia, and China are targeting victims using a Windows shortcut file exploit, according to new research from Trend Micro’s Zero Day Initiative (ZDI). In ...

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Microsoft's partial patching in February 2026 of a zero-day vulnerability abused by Russian state-sponsored threat group ...