Undocumented x86 instructions in Intel CPUs that can modify microcode
There was an interesting black hat talk about automatically finding undocumented instructions. [0]<p>Interesting comment on twitter to the instruction of the original post[1]<p>[0] <a href="https://www.youtube.com/watch?v=KrksBdWcZgQ&t=3" rel="nofollow">https://www.youtube.com/watch?v=KrksBdWcZgQ&t=3</a><p>[1] <a href="https://twitter.com/eigma/status/1373155650432290819" rel="nofollow">https://twitter.com/eigma/status/1373155650432290819</a>