Intel Management Engine

Interesting talk about Intel AMT, more specifically the ME coprocessor:
http://recon.cx/2014/slides/Recon%202014%20Skochinsky.pdf
https://www.youtube.com/watch?v=Y2_-VXz9E-w

Basically, this is a super-rootkit on a chipset. I told you that the "anti-theft" technology was pure shit.. Also, this is why you need security clearance to work at Intel in US.

Store your old computers kids!

>>9

even if you wouldn't have network access you still could save some specific data in some NVM for future physical reading.

If they have physical access to your machine, you're already fucked with or without a hardware backdoor. A paranoid person would have some sort of dead man's switch that will destroy the computer for that scenario.