Defense Secretary Pete Hegseth had an internet connection that bypassed the Pentagon’s security protocols set up in his office to use the Signal messaging app on a personal computer.
By itself, Signal is one of the most secure communications software, it is encrypted point to point with a different cypher per message and the cyphers are already prepared to withstand quantum processing.
The issue is not Signal, is the fact this moron was circumventing security measures as member of the government.
Well, the issue isn't Signal being bad, it's a government official who violates FOIA requirements because apparently what he says is too damning to be scrutinized.