Summary
The Pentagon warned employees against using the encrypted messaging app Signal due to a potential vulnerability exploited by Russian hackers.
The warning came just before a security breach where top Trump administration officials, including the vice president and defense secretary, accidentally added a journalist to a Signal group chat discussing military strikes in Yemen.
The leak sparked outrage and criticism, though Trump downplayed it as a “glitch.”
Signal stated it was unaware of any unaddressed vulnerabilities.
It depends on the context. If the pentagon has a chat app that only has authorized people with verified identities and using official devices in it, then using Signal introduces an attack vector that was not there before.