Those were supermicro motherboards assembled in China.
They were designed in the US by a US company that outsourced the assembly to China. China made the boards to look identical to the design, but added that back door in a way you can't find it without very sophisticated disassembly of the...
Because literally everyone else (and even probably half the domestic manufacturers is still using parts from China.
Do a search for "chinese backdoor" and they're probably the only nationality out there where the first page is all hacking and not porn.
Some of it is insidious.
Malicious...
One of these came through the local gun shop out here a couple years ago.
I was *this* close to buying it.
EWGC Custom Glock 17 Gen3 17rd Nintendo Zapper Edition in 9mm (PI1750203-ZAP) EWGC Custom Glock 17 Gen3 17rd Nintendo Zapper Edition in 9mm (PI1750203-ZAP)
Iran would give ISIS a nuke in a heartbeat if they thought it would be detonated in NY or DC.
They may dislike each other, but they won't pass up a "death to America" opportunity for it.