Mike Waltz, the national security adviser for President Donald Trump, is seen in photos using Signal during a Cabinet meeting on April 30.

Many of the officers reportedly have the app set to automatically delete messages within 24 hours.

Former national security adviser Mike Waltz was photographed using a Signal-like messaging app during Wednesday’s Cabinet meeting, more than a month after he first came under intense scrutiny for ...

In a statement, the department said the app serves as a supplemental communication tool, similar to phone calls, text ...

Apps that delete messages don't comply with Ohio public records law and government employees should avoid using them, Attorney General Dave Yost said.

Add Yahoo as a preferred source to see more of our stories on Google. While testifying at a Senate hearing on his nomination for U.S. ambassador to the United Nations on Tuesday, Waltz was asked about ...

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