In a Senate hearing today, CIA Director John Ratcliffe said, under oath:
“One of the first things that happened when I was confirmed as CIA director was Signal was loaded onto my computer at the CIA, as it is for most CIA officers. One of the things that I was briefed on very early, senator, was by the CIA records management folks about the use of Signal as a permissible work use. It is. That is a practice that preceded the current administration to the Biden administration.”