That, what they described is not possible even with 7nm technology. You can read my posts here which show what is possible. And embedding Chip into MB... possible, one can then claim that they have entire additional layer of traces to invade all dozens of pins required to be invaded. Except that scanning methods would apparently see that additional layer of traces. Too easy to identify, too easy to prove. But that entire BB article did their best to evade provision of any proof. It is just talking, and talking... scaring and scaring... no proof whatsoever. I am all in for conspiracies as it is food for the thought, but they have very little to think about.