These days I would bet all internal/debugging features are gated behind asymmetric crypto-based challenge/response. And it's probably physically impossible to d

These days I would bet all internal/debugging features are gated behind asymmetric crypto-based challenge/response. And it's probably physically impossible to decap a <10nm chip and inspect visually. I don't see a way around it other than hoping for implementation bugs. It might be the end of the road for the hackers :(