Intel ARM AMD types are flawed by default making possible system attacks.
They went to develop patches in purpose to prevent memory corruptions even with the price of a lower processing speed - average of performance loss.
The problem of these patches were coming with an advice: Do not Install them - Intel patches. Why ? Because now memory is not read with 128 kbps or such (if I remember correctly) the flaw went to screwing with a few GB/s by directly writing in memory all kinda funky stuff.
Actually Linus Torvald - the creator of Linux was complaining about solutions and... he was not that happy as I could figure in that public debate...
It looks like there are problems in solving these issues due to flawed-by-default architectures.
Machines used in important domains will have security holes by default. Now let me know how goes privacy things in such case, Banks. Hospitals, Various Sales, etc, etc. I would not allow my life to be managed by a computer - like an old man said and he said well.