Well, this looks interesting and very disturbing. Sometimes I wonder if companies like Intel are behind things like this. It would be a great way to hit back at AMD after all of the microcode problems with Intel processors after the years. *TLDR; If you have a system that is already (or easily) compromised, then might allow you to implant malware directly into the firmware that runs on your CPU and it has apparently been around for a LONG time on AMD chips.* Archive: https://archive.today/6XL4q From the post: >>Security flaws in your computer's firmware, the deep-seated code that loads first when you turn the machine on and controls even how its operating system boots up, have long been a target for hackers looking for a stealthy foothold. But only rarely does that kind of vulnerability appear not in the firmware of any particular computer maker, but in the chips found across hundreds of millions of PCs and servers. Now security researchers have found one such flaw that has persisted in AMD processors for decades, and that would allow malware to burrow deep enough into a computer's memory that, in many cases, it may be easier to discard a machine than to disinfect it.