cybercrime.clubhttps://cybercrime.club/tags/windows-defender/Infrastructure security news for people who build infrastructure.Hugo -- gohugo.ioen-usWed, 08 Apr 2026 06:09:24 -0400BlueHammer: Unpatched Windows Defender Zero-Day Turns Definition Updates Into SYSTEM Shellshttps://cybercrime.club/posts/bluehammer-windows-defender-zero-day-lpe/Wed, 08 Apr 2026 06:09:24 -0400https://cybercrime.club/posts/bluehammer-windows-defender-zero-day-lpe/A disgruntled researcher leaked BlueHammer, a Windows Defender LPE zero-day that chains TOCTOU race conditions with Cloud Files oplocks to dump SAM hives and escalate to SYSTEM. No patch available.Vulnerabilities