https://arstechnica.com/gadgets/2018/10/bloomberg-super-micro-motherboards-used-by-apple-amazon-contained-chinese-spy-chips/

Tiny Chinese spy chips were embedded onto Super Micro motherboards that were then sold to companies in the US including Amazon and Apple ,reports Bloomberg. The report has attracted strenuous denials from Amazon, Apple, and Super Micro.

Bloomberg claims that the chips were initially and independently discovered by Apple and Amazon in 2015. The companies reported their findings to the FBI, prompting an investigation that remains ongoing. The tiny chips, disguised to look like other components or even sandwiched into the fiberglass of the motherboards themselves, were reportedly connected to the management processor giving them far-reaching access to both networking and system memory. The report says that the chips would connect to certain remote systems to receive instructions, and could then do things such as modify the running operating system to remove password validation, thereby opening a machine up to remote attackers.