Signal is viewed as one of the most secure messaging apps available to the public, but both experts and lawmakers are sharing their concerns about its use by top Trump administration officials.
Several cabinet secretaries, CIA director John Ratcliffe, and the national security advisor Mike Waltz were discussing their plans to strike Yemen in a group chat on the app and accidentally added a journalist, Jeffrey Goldberg of The Atlantic, to the conversation. Goldberg revealed in a first-hand account on Monday that “precise information about weapons packages, targets, and timing” was included in the chat.