[clmgs]

AMD has a similar backdoor:

https://en.wikipedia.org/wiki/AMD_Platform_Security_Processo...

[_kbh_]

I would argue that the out of band management provided by DMTF DASH is closer to what people consider then Intel backdoor then the AMD PSP. The PSP cannot be accessed remotely and is only available locally which removes most of the attack surface.

https://www.amd.com/system/files/documents/out-of-band-clien...