Defcon

We’ve all seen it. The sudden freeze. The blue screen of death. The catastrophic system halt. Usually, when a processor encounters a truly unrecoverable hardware error—a bit flip in the L2 cache, a voltage sag, or a literal "CPU on fire" scenario—it triggers whats called a Machine Check Exception (MCE) . The hardware realizes the world no longer makes sense, throws its hands up, and shuts everything down before data corruption can spread. It’s the ultimate fail-safe. But as s

Hey everyone I'm excited to share some of the unconventional ideas I presented at DEF CON 23 regarding "Repsych: Psychological Warfare in...

This groundbreaking research exposes a sophisticated hardware backdoor in certain VIA C3 family processors. This backdoor, enabling a devastating ring 3 (userland) to ring 0 (kernel) privilege escalation, represents a fundamental bypass of decades of established hardware and software security paradigms.