Microsoft patches Defender zero-days exploited in live attacks
… They had no CVEs and no fixes when first released. Endpoint security firm Huntress confirmed active exploitation before the patches existed. …
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MiniPlasma zero-day gives SYSTEM access on fully patched Windows 11
… Security researcher Will Dormann of Tharros independently verified the results. …
Microsoft Exchange Server zero-day exploited via crafted email
… Exchange Server 2016 and 2019 will only get the permanent patch through Microsoft's Period 2 Extended Security Update program. …
Nightmare Eclipse banned from GitHub and GitLab, vows July 14 attack
… All six targeted components are located at or below the endpoint security layer. …
Microsoft mitigates YellowKey BitLocker bypass, no patch yet
… No full security update is available yet. …
CISA gives Windows admins until June 3 to patch Nightmare Eclipse Defender flaws
… Verify those version numbers in Windows Security settings before June 3. …
Windows Secure Boot certificates start expiring June 24
… Boot-level exploits like BlackLotus have specifically targeted this layer. A device with expired certificates has no patch path against future threats at the firmware level. How to check your device Open Windows Security, select Device Security, and check the Secure Boot section. …
Microsoft Defender flags DigiCert certificates as malware
… Microsoft's recommendation is to update Defender to the latest available Security Intelligence version via Settings, then Windows Security, then Virus and Threat Protection, then Protection Updates. …
Windows 11 KB5083769 is breaking Acronis, Macrium, and other backup apps
… Why Microsoft blocked it Microsoft's official statement frames the change as intentional security hardening, not a bug. …
Windows 11: May 2026 Patch Tuesday is live
… A full breakdown of new CVEs addressed in May's security bulletin is expected from Microsoft's Security Response Center and BleepingComputer after the update begins rolling out. …
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