microcontrollers

Photon-Emission-Guided Laser Fault Injection Enables RP2350 Secure Debugledger.com

Researchers used photon‑emission microscopy to locate the DEBUGEN register on a decapsulated RP2350, then applied focused laser pulses to flip its bits, re‑enabling Secure debug and extracting a secret stored in OTP memory. The attack needs physical access and a $250 k lab setup, showing that the chip’s permanent debug‑disable can be overridden.