Elon Musk is threatening to fire federal employees who leak information as he and President Donald Trump unleash unprecedented chaos on the government. On Sunday, a user posted an anonymous “operational security reminder” on Reddit’s FBI forum with advice for sharing information so it can’t be traced back to the source.

A federal judge in New York temporarily restricted the ability of Elon Musk’s Department of Government Efficiency to access the Treasury Department payment system, saying that doing so was necessary to prevent the potential disclosure of sensitive and confidential information.

Elon Musk is calling for the impeachment of the federal judge who made a decision early Saturday morning that the Treasury Department should block access to anyone “other than civil servants with a need for access to perform their job duties” from its payment systems.