F or years, Signal has been the go-to messaging app for private communications. The federal government now believes Amazon was using that power inappropriately.

The Federal Trade Commission is accusing Amazon founder Jeff Bezos and others of using disappearing messaging apps to conceal potential evidence in the agency’s landmark antitrust case.

As part of its antitrust suit against Amazon, the FTC accused the company of using Signal’s disappearing messages feature to conceal communications.

Jeff Bezos, Andy Jassy, and other execs are accused of using the ephemeral messaging app for months after the feds notified Amazon of the antitrust investigation.