Since OS is transparent, the only possible backdoor is HW that is some part of the chip has functions that is not revealed to developers. A HW based backdoor is just a program stored inside the CPU chip instead of external RAM, an useful backdoor able to communicate with NSA is going to be big taking large area of circuitry that is impossible to hide. Backdoor of small footprint preventing from being discovered will have to rely on external SW that is OS backdoor or OS bug or App backdoor which then defeat the advantage of HW backdoor.google services are the only thing that allows this? What about backdoors?
Not to mention all the backdoors the TMIC chips probably have....
[addion]
More importantly, CPU can not talk directly to NSA, it has to rely on network chips and communication SW stacks which are exposed and transparent, such CPU backdoor is like a genious being locked inside a room without window and door, it can't do anything.
Last edited: