8 Oct 2018 06:17 AM EST

Reuters reports that Apple Inc’s top security officer told Congress on Sunday that it had found no sign of suspicious transmissions or other evidence that it had been penetrated in a sophisticated attack on its supply chain. Apple Vice President for Information Security George Stathakopoulos wrote in a letter to the Senate and House commerce committees. He said the company had repeatedly investigated and found no evidence for the main points in a Bloomberg Businessweek article published on Thursday. The article claimed that chips inside servers sold to Apple by Super Micro Computer Inc allowed for backdoor transmissions to China.