The US Department of Homeland Security said on Saturday it Now had no reason to doubt statements from companies that have denied a Bloomberg report that their supply chains were compromised by malicious computer chips inserted by Chinese intelligence services.US Department of Homeland Security Says No Reason to Doubt Firms' China Hack Denials

“The Department of Homeland Security is aware of the media reports of a tech supply chain undermine,” DHS said in a statement.

“Like our partners in the united kingdom, the National Cyber Security Centre, at this time we have no reason to doubt that the statements from the companies named in the narrative,” it stated.

Bloomberg Businessweek on Thursday cited 17 anonymous intelligence and business sources as saying that Chinese spies had placed computer chips within gear used by around 30 businesses, as well as multiple U.S. government bureaus, which would give Beijing secret access to internal networks.

Britain’s federal cyber-security bureau said on Friday it had no reason to doubt that the evaluations made by Apple Inc and also Amazon.com Inc challenging the report.

Apple contested the Bloomberg report on Thursday, saying its own internal investigations found no evidence to support the narrative claims and neither the company, nor its contacts in law enforcement, were aware of any investigation by the FBI on the situation.

Apple’s newly retired general counsel, Bruce Sewell, told Reuters he called the FBI’s then-general counsel, James Baker, annually after being told by Bloomberg using an open evaluation of Super Micro Computer Inc, a hardware manufacturer whose products Bloomberg said were planted with malicious Chinese chips.

“I got to the phone with him and said,’Do you know anything about it? ,” Sewell said of his conversation with Baker. “He said,’I have never heard of this, but give me 24 hours to make sure’ He called me back 24 hours later and said’nobody understands what this story is about.'”