byovd
3 posts tagged byovd.
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Attack Surface Reduction Rules: The Quiet Layer That Stopped Office Macros
How Microsoft built a 19-rule, kernel-mediated behaviour block list inside Windows Defender that turned the Emotet macro chain into a one-row, no-ticket telemetry event.
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The Driver That Was Signed and the Driver That Won't Load: Windows Kernel Code Integrity, 2006-2026
A history of Windows kernel code-signing -- KMCS, BYOVD, HVCI, the Vulnerable Driver Block List, and why a 2026 Windows kernel uses five gates to decide what loads.
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WDAC + HVCI: Code Integrity at Every Layer in Windows
How Windows decides which code is allowed to run, end-to-end: WDAC policy schema, HVCI per-VTL SLAT enforcement, the audit-to-enforce loop, and the residual attack surface neither feature can close.