https://techcrunch.com/2018/10/04/china-reportedly-infiltrated-apple-and-other-us-companies-using-spy-chips-on-servers/

Ready for information about what may be one of the largest corporate espionage programs from a nation-state? The Chinese government managed to gain access to the servers of more than 30 U.S. companies, including Apple, according to an explosive report from Bloomberg published today.

Bloomberg reports that U.S-based server motherboard specialist Supermicro was compromised in China where government-affiliated groups are alleged to have infiltrated its supply chain to attach tiny chips, some merely the size of a pencil tip, to motherboards which ended up in servers deployed in the U.S.