The newly disclosed Windows Defender flaw, tracked as CVE-2026-50656, could let attackers escalate privileges on fully ...

A week ago, the security researcher who goes by “Nightmare Eclipse” published information about RoguePlanet, a zero-day security vulnerability in Microsoft’s Defender security program. The ...

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 ...

Microsoft is trying to fix the RoguePlanet zero-day vulnerability impacting Defender on Windows 11 and Windows 10.

CISA says ransomware gangs are exploiting Microsoft Defender’s BlueHammer flaw, patched in April 2026 after zero-day reports.

CISA confirmed on Monday that ransomware gangs are now exploiting a Microsoft Defender privilege escalation vulnerability, dubbed BlueHammer, that has previously been abused in zero-day attacks.

Hackers have broken into at least one organization using Windows vulnerabilities published online by a disgruntled security researcher over the last two weeks, according to a cybersecurity firm. On ...

This voice experience is generated by AI. Learn more. This voice experience is generated by AI. Learn more. Microsoft and CISA confirm Defender zero-days exploited in the wild. Microsoft has started ...

Update, March 31, 2025: This story, originally published March 29, has been updated with an explanation of LOLBINS as well as further technical information regarding the Windows Defender Application ...

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