@hackaday@hackaday.social The original article is pretty cool --> https://donjon.ledger.com/blog/rp2350-secure-debug-laser-fault-injection/ Summarized from their TL;DR: - destructive process; uses lab equipment worth 250kUSD - photon emission microscopy finds debug-enable registers on RP2350 A4 die - fire laser pulses at die to restore debug access (which had been permanently disabled in the chip's OTP config) to the chip’s Secure world - recover secret from OTP memory. 🤯 (Also, the photos...!)