[aurizon]

You are wrong. With a state actor in the room, it is quite possible to place a complex die with static ram on a thin substrate inside a multilayer board, using the +5 and ground and a number of traces that lead to I/O ports etc, https://hackaday.com/2019/01/18/oreo-construction-hiding-you... Remember these are all from 15 down to 10 nanometer parts and at that size circuit complexity takes little space and since they live beneath other chips, they are hard to find with x-rays if there is a +5 and ground plane that hides them. Remember are 16 billion gates in an Apple M1 CPU, https://www.macrumors.com/guide/m1/#:~:text=M1%20Macs%20max%.... A million gate parts is as small as a poppy seed and would need to have a fan out - perhaps they could have an optical I/O and live within the corporate data stream, only waking up when special complex command sequences occur and they read their RAM and do their job - back to waiting...