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Researcher threatens July Windows exploit release after Microsoft dispute
Vulnerabilities

Researcher threatens July Windows exploit release after Microsoft dispute

May 29, 2026
Security researcher claims to have additional zero-day exploits following public disagreement with Microsoft over vulnerability…
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Microsoft Criticises Public Zero-Day Disclosures After GitHub Account Removal
Vulnerabilities

Microsoft Criticises Public Zero-Day Disclosures After GitHub Account Removal

May 28, 2026
Software giant reinforces coordinated disclosure policy following researcher's public vulnerability releases.
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Microsoft Copilot Cowork Vulnerability Enables Data Exfiltration via Email
Security Incidents

Microsoft Copilot Cowork Vulnerability Enables Data Exfiltration via Email

May 27, 2026
Security flaw allows attackers to steal OneDrive files through prompt injection and automated email messages…
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Microsoft Mitigates YellowKey BitLocker Bypass Vulnerability CVE-2026-45585
Vulnerabilities

Microsoft Mitigates YellowKey BitLocker Bypass Vulnerability CVE-2026-45585

May 26, 2026
The company has released a mitigation for the publicly disclosed zero-day flaw that allows attackers…
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Microsoft Disrupts Malware-Signing Service Used in Ransomware Attacks
Security Incidents

Microsoft Disrupts Malware-Signing Service Used in Ransomware Attacks

May 21, 2026
Fox Tempest threat actor exploited Microsoft's Artifact Signing system to deliver signed malware to thousands…
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CISA adds seven known exploited vulnerabilities to catalog
Government Advisory

CISA adds seven known exploited vulnerabilities to catalog

May 21, 2026
Five legacy Microsoft flaws from 2008-2010 join two current Microsoft Defender vulnerabilities on federal remediation…
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Microsoft disrupts illegal code-signing operation targeting thousands of US victims
Security Incidents

Microsoft disrupts illegal code-signing operation targeting thousands of US victims

May 20, 2026
Tech giant shuts down malware signing service used by ransomware groups to bypass security controls.
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Microsoft patches 30 critical vulnerabilities in May update
Vulnerabilities

Microsoft patches 30 critical vulnerabilities in May update

May 15, 2026
Patch Tuesday delivers significant workload for administrators but no zero-day exploits reported
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