Messaging app Signal is at the centre of questions about security and the operation of government after a journalist said he had been added to a group chat in which secret and official US plans were ...

As ads for secure messenger Signal go, this one is hard to beat. Trump’s senior officials using the encrypted app to discuss America’s attack on Yemen — whether or not war plans were actually shared — ...

A magazine journalist’s account of being added to a group chat of U.S. national security officials coordinating plans for airstrikes has raised questions about how highly sensitive information is ...