Since the late 2000s, computer chipsets have shipped with security processors like Intel Management Engine and AMD Platform Security Processor.

Part of their job is to verify that the UEFI firmware is from the computer OEM and has not been tampered with or comes from a 3rd party. /2

How do these security processors verify the firmware integrity?

Through a set of cryptographic keys and their hashes, which are used to verify the cryptographic signature of the UEFI firmware. These keys or hashes are *burned* into the processor and cannot be changed. /3

For now, these functions are not strictly enforced or turned on in a lot of consumer devices.

But is there anything stopping nation states from forcing hardware manufacturers and OEMs to do so?

What options do you have in such a case? /4

There have been vulnerabilities in ME and PSP, and there MAY BE a way for users to bypass these checks.

But this assumes:
- Someone out there will put in labor to circumvent these things and release it freely, even at great expense.
- A simple, user doable hack even exists.

/5

Again, no one assumes that any system can be made 100% bulletproof. But that was never the point is it?

The end game is for manufacturers to harden their devices against cheaper tools and raise the barrier to entry such that it costs a fortune for hackers who might even try. /6

This is why GiovanH's blog article is a must-read.

People assume that accessible hacks of invasive systems will always exist, and users hacking their devices is to be expected.

THIS SHOULDN'T BE A NORM. THIS IS AN ARMS RACE AND WE'RE OUTMATCHED. /7

https://blog.giovanh.com/blog/2025/10/14/a-hack-is-not-enough/

People who think "oh we'll just buy Chinese motherboards and chips" or "just use open source hardware"

WHO FABRICATES THE BOARDS AND CHIPS FOR OSHW? DO YOU BELIEVE STATES LIKE CHINA AREN'T INTERESTED IN SIMILAR MEASURES OF CONTROL?

This is the tech equivalent of tankie-ism.

/8