U.S. security officials have reportedly been using their personal Gmail accounts to conduct government business — including sharing sensitive information about military positions. And yes, national security advisor and Signalgate protagonist Michael Waltz was involved.

Senior members of the Trump administration’s National Security Council — including its top national security adviser, Michael Waltz — used Gmail to conduct government business, The Washington Post reported, citing documents and three unnamed government officials.

Trump’s National Security Adviser was using Gmail for sensitive discussions—which is far less secure than Signal.