https://www.vice.com/en_us/article/v74ymx/the-cia-wont-admit-they-use-slack

Given its traditional missions, which include subverting democracy around the world and providing U.S. leaders with unreliable intelligence analysis, it’s understandable that the Central Intelligence Agency would be among our less transparent federal agencies. Now, though, it’s gripping even more tightly to inconsequential information about what it gets up to than the ultra-secretive National Security Agency—and for no evident reason.

Last year, VICE filed a Freedom of Information Act request asking for any Slack domains in use by the CIA. The NSA, responding to a similar request, admitted that it had records responsive to the request—that the agency uses the demonic chat app, in other words—but said it couldn’t release them because they were a state secret. Recently, the CIA replied to our request by saying this: