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Analysis of BlueHammer: LPE Exploiting Windows Defender Updates
By Cristian Rubio on Mon, 04/13/2026
Fortra Intelligence and Research Experts (FIRE) have conducted a deep technical analysis of BlueHammer, a highly sophisticated Windows zero-day exploit chain that achieves Local Privilege Escalation (LPE) to NT AUTHORITY\SYSTEM. To help security teams better navigate the advanced threat landscape, we are sharing this technical deep dive into how the exploit operates and how to defend against it...