John Z Black

Consumer Advisory: Fake Windows Updates, Qilin in Healthcare, and patches you shouldn't skip

John Z Black Apr 27, 2026

Vulnerabilities & Patching #lumma #qilin #healthcare #cisa #windows #patching

A stealer campaign with 0 detections is hiding inside fake Windows 11 upgrade ads. Qilin ransomware hit a Florida dermatology practice. And CISA added more bugs to the mandatory patch list.

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A Disgruntled Researcher Just Handed Every Attacker a Free Windows Privilege Escalation Exploit

John Z Black Apr 7, 2026

Vulnerabilities & Patching #windows #zero-day #privilege-escalation #bluehammer #exploit #microsoft #msrc

A frustrated researcher publicly released BlueHammer, a working Windows privilege escalation zero-day, after clashing with Microsoft's disclosure process.

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