Well, this is for the classic ASIC CPU world. But really critical stuff should go as deep as custom ASIC and/or FPGA. (A decade ago, I don't recall exactly, b

Well, this is for the classic ASIC CPU world. But really critical stuff should go as deep as custom ASIC and/or FPGA. (A decade ago, I don't recall exactly, but those "security guys" did not even try with classic CPU ASICs, they were going custom _simple_ design on FGPA). That was a decade ago... nowadays...