Most known Hardware security bugs are concerns of side channel information harvesting. Most important are timing analysis, but in micro controllers also measurement of power consumption was used to harvest information.
;Writing data by bypassing memory protection:
;Changing behaviour of other programs/thread by bypassing memory protection:
Microcontroller: Power supply modulation to wrongly execute code.
;Using bugs in CPUs:
Most known Hardware security bugs are related to CPUs
;Using bugs in RAM:
Sledgehammering
;Using bugs in other components:
Chipset,
===Speculative execution vulnerabilities===
Starting in 2017 a series of security vulnerabilities were found in the implementations of [[speculative execution]] on common processor architectures which effectively enabled an elevation of [[privilege (computing)|privileges]]. It was possible to mitigate these flaws with changes to [[microcode]].
