It’s a more extensive use of the app than previously reported and sheds new light on how commonly the Trump administration’s national security team relies on Signal.

Just seven days after the Signal chat scandal erupted, the White House announced that it doesn’t want to talk about it anymore. In fact, it was Monday when press secretary Karoline Leavitt said that, as far as she and her colleagues are concerned, “this case has been closed.”

The team led by U.S. President Donald Trump's national security adviser, Mike Waltz, set up at least 20 group chats on the commercial Signal app to coordinate official work on issues involving China,