A report by Bloomberg alleging a massive operation by China’s Peoples Liberation Army (PLA) to plant spy hardware on servers used by some of the U.S.’s most high profile corporations is being refuted by tech vendors Apple as well as Amazon, who contend that no such compromises took place. The report written by Jordon Robinson and Michael Riley and released Thursday says that PLA agents implanted tiny surveillance chips on server motherboards manufactured by Super Micro Computer. The devices, no larger than a pencil tip, could give Chinese agents access to and control over critical hardware used by Apple Computer, Amazon and other large, U.S. firms, including financial services firms and intelligence agencies, the report says. [You might also want to read: Massive Facebook Breach Affects 90 Million Accounts] If true, the incident would be one of the most serious uses of a so-called “supply chain” hack, in which sophisticated adversaries […]