Questions tagged [cpu]

Before Spectre and Meltdown, I've never heard of users updating microcode on a chip through firmware or otherwise. I actually thought it was written into the silicon and immutable. Now I'm seeing a lot of mentions about this., things like disabling…

If an attacker has an unlimited physical access to CPU, but does not have access to memory, including RAM, can he attack and gain access to the user's data? I heard the opinion that this is impossible according to the laws of physics, even with an…