- Before Snowden, if you spoke about these issues, you were dismissed as paranoid.
- After Snowden, if you dismiss these issues, you are dismissed as hopelessly naive...
Oh, also - considering all this - you can bet that Intel's Management Engine has likely been backdoored by the NSA, so using Intel's processors is not recommended, especially if you're a non-US company... (industrial espionage !)
https://blog.invisiblethings.org/papers/2015/x86_harmful.pdf