John Fedup
The Bunker Group
If the request for knowledge on Chinese content has been a pretty recent thing, may have something to do with this.
Bloomberg - Are you a robot?
Basically using small microchips to pre-infect new built equipment. And even once you discover there's an infection, there's nearly no way to "wipe out" the infection because its built directly into the hardware. Its like clearing malware off your computer that just reinfects when you reset the system.
Excellent but depressing link on how vulnerable we are to this sort of attack. You should duplicate your post on the cyber security thread, an important read for members interested about cyber threats. Cheers!