The penalties for violating a gag order can be very high indeed. Research "National Security Letters" Or think of Aaron Scwartz. If you get on the bad side of L

The penalties for violating a gag order can be very high indeed. Research "National Security Letters" Or think of Aaron Scwartz. If you get on the bad side of LE, they can hunt and harrass you for years. There was one service which suggested people/organizations report in once per week that they had NOT received a NSL. Presumably when a company did not report this, it would suggests that they had. I'm not sure what happened to the service.