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A comment on Breaking the x86 Instruction Set: how to find undocumented x86 instructions. Parent comment

Re:Breaking the x86 Instruction Set: how to find undocumente... by micheljones on Monday September 11, 2017 @07:18AM (#15217618)
There is so many ways to implement backdoors in CPUs, even completely analog ones:

https://hackaday.com/2017/04/25/an-analog-charge-pump-fabric...

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