Microsoft
Curated coverage and analysis in this editorial area.
Poisoned AI Chatbots: A New Vector for High-Performance GPU Cryptojacking
Microsoft has identified an active campaign that manipulates AI chatbot recommendations to distribute GPU-based cryptojacking malware…
Windows Hit by Post-Patch Tuesday Zero-Day Blitz
Security researcher Chaotic Eclipse has disclosed three new Windows zero-day vulnerabilities following the May 2026 Patch Tuesday. To…
YellowKey: Microsoft Issues Emergency Mitigations for BitLocker Bypass
Microsoft issued temporary mitigations on May 20 for CVE-2026-45585, a BitLocker bypass vulnerability exploited through the Windows Re…
CISA Adds Microsoft Defender DoS Flaw to KEV Catalog with June 3 Deadline
CISA has added CVE-2026-45498, a Denial of Service vulnerability in Microsoft Defender, to its Known Exploited Vulnerabilities catalog…
CVE-2026-41091: Microsoft Defender Engine Exploited for SYSTEM Privilege Escalation
A link-following vulnerability in the Microsoft Malware Protection Engine enables local privilege escalation to SYSTEM. An analysis of…
May 2026 Patch Tuesday: 137 Flaws and the Domain Controller Threat
Microsoft's May 2026 security update addresses 137 vulnerabilities, including 31 critical flaws. While no zero-days were reported, una…
M365 Phishing: How Kali365 and EvilTokens Bypass MFA Without Passwords
Two emerging Phishing-as-a-Service (PhaaS) platforms are leveraging device code phishing and OAuth consent abuse to hijack Microsoft 3…
Microsoft Defender Zero-Days Under Active Attack; CISA Mandates Patching by June 3
Microsoft has confirmed that two vulnerabilities in Microsoft Defender are being actively exploited in the wild. CISA has added both f…
Microsoft Open-Sources RAMPART and Clarity to Secure AI Agent Workflows
Microsoft has unveiled two open-source security tools for AI agents: RAMPART, a Pytest-native framework for build-time testing, and Cl…
GitHub Breach: 3,800 Internal Repositories Stolen via Malicious VS Code Extension
GitHub has confirmed a security breach affecting approximately 3,800 internal repositories after an employee device was compromised by…
BitLocker Bypassed: New Zero-Day Trio Targets Windows Following Patch Tuesday
An analysis of the YellowKey, GreenPlasma, and MiniPlasma vulnerabilities disclosed shortly after the May 2026 Patch Tuesday, impactin…
Microsoft Neutralizes Fox Tempest: Malware-Signing-as-a-Service Operation Dismantled
Microsoft has disrupted Fox Tempest, a sophisticated 'Malware-Signing-as-a-Service' operation that leveraged stolen identities to expl…