Trump administration officials have told some U.S. government employees that Elon Musk’s DOGE team of technologists is using artificial intelligence to surveil at least one federal agency’s communications for hostility to President Donald Trump and his agenda, said two people with knowledge of the matter.

While much of Musk’s Department of Government Efficiency remains shrouded in secrecy, the surveillance would mark an extraordinary use of technology to identify expressions of perceived disloyalty in a workforce already upended by widespread firings and severe cost cutting.

The DOGE team is also using the Signal app to communicate, according to one other person with direct knowledge of the matter, potentially violating federal record-keeping rules because messages can be set to disappear after a period of time.

And they have “heavily” deployed Musk’s Grok AI chatbot – an aspiring ChatGPT rival – as part of their work slashing the federal government, said that person. Reuters could not establish exactly how Grok was being used.