In some cases, officers set messages in the Signal app to delete after 24 hours. People in the legal field say that raises ...

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 ...

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

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

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

The FBI issued a massive alert for two of the world's most popular encrypted messaging apps. Find out if your private chats are being targeted.

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