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Microsoft Defender

Zero-Day Vulnerabilities Phishing Triage Agent Service Disruptions Flaws Vulnerability Disclosures

Researcher Publishes YellowKey BitLocker Bypass and GreenPlasma Windows Exploit PoCs

Security teams now face a short window to harden devices until Microsoft ships fixes.

CISA Orders Federal Fix for Microsoft Defender 'BlueHammer' Flaw Exploited in the Wild

Microsoft Defender Zero-Days Are Being Exploited as Two Remain Unpatched

At RSA, Microsoft Expands Defender and Security Copilot for Identity-Centric Threats