By now, everyone knows the premise behind two unconfirmed Bloomberg articles that have dominated security headlines over the past week: spies from China got multiple factories to sneak data-stealing hardware into Supermicro motherboards before the servers that used them were shipped to Apple, Amazon, an unnamed major US telecommunications provider, and more than two dozen other unnamed companies.

https://arstechnica.com/information-technology/2018/10/supermicro-boards-were-so-bug-ridden-why-would-hackers-ever-need-implants/