Bloomberg BusinessWeek reported China had planted malicious computer chips on systems used by Apple and Amazon. US Department of Homeland Security and UK’s National Cyber Security Centre have backed the companies’ denials. Apple has also written a strongly-worded letter to the U.S. House and Senate about the Bloomberg article. GCHQ has urged security researchers to contact the NCSC confidentially if they had credible intelligence about these reports The NCSC also said they have no reason to doubt the statements made by Amazon and Apple.”]