As usual - what's possible to exploit will be exploited.
There's really only 1 solid solution to this:
Open software and open hardware.
There's really only 1 solid solution to this:
Open software and open hardware.
Edited for bad boolean.
Also applies to crypto-accelerated CPU instructions.
With OSS and OSH, at least there's a chance of auditing what one has is what was released, and a chance to audit that there's no funny business going on.