If you look at the activity in the frequency domain, you might find a clock that's present in adulterated hardware that's missing in the nominal hardware.
> exposed power consumption of random periphery parts
Sampling these analog signals is done outside of the computer itself. Even if it were exposed via i2c, you couldn't trust anything that it would tell you.
I think it's probably also a software solution that the company whose CEO was the sole source for this article is trying to promote, judging from this marketing brochure for them: https://twitter.com/securelyfitz/status/1049725014075830272 The claims in that certainly look every part as improbable.
> exposed power consumption of random periphery parts
Sampling these analog signals is done outside of the computer itself. Even if it were exposed via i2c, you couldn't trust anything that it would tell you.