Randomizing structure layout

Terminology nit: IMO "hardening" is not the right term
for what this is about, any more than making yourself
harder to hit by wearing camouflage in your own bunker.
It's not even a hard kevlar vest ;-)

Sad if necessary, but real security will come by other means, ISTM.

Obviously, people are trying, from BIOS/UEFI on through hypervisors
and up and sideways to ineluctable management engines. Which may all
be good and clever dogs, but better hope they can be trained to be
loyal to you ;-)