Yet again, hardware vendors prove they learned nothing from the Spectre/Meltdown fiasco. By implementing DMP, Intel and Apple have doubled-down on putting performance ahead of security and correctness. A fast CPU that leaks my private keys is not a CPU; it's an expensive colander.

There are alternatives to making the hardware faster, but hardware vendors are not looking in the right places. Maybe they will reach a dead-end in terms of making CPUs faster, and then begin looking elsewhere for performance improvement.

This is the kind of thing people don't think of when they put their seed phrase into a computer to hide it in an image file or do something similar. You never know what kinds of vulnerabilities are out there.