Bloomberg Businessweek reports that a Chinese espionage agency successfully planted microchip back doors on servers built in China for Supermicro, San Jose, CA, a major supplier of motherboards to many companies including Apple, Amazon and the US military. At least 30 companies are believed to have been compromised. Bloomberg cites 17 (unnamed) sources including American intelligence officials and insiders at Amazon and Apple. All of the companies have denied the report, which is what one would expect.
This is pretty scary stuff, IMO. Is there any way to prove that hardware has not been compromised?