Re: 4 bits one in 16
"Oh my, those guys who design silicon chips for a living must be real dumwits to not think of just trying 16 times to get past this protection."
An interesting programming challenge, as everytime your probe guesses wrong the chip issues an exception and halts your probe. I look forward to seeing what Joanna Rotkowska (Invisible Things Lab) has to say about the M7 security features...