Actually, they don't. The law is crystal clear that even UNKNOWINGLY revealing information is a crime.
As for what "it" is, speak less in your efforts to be noticed and pay more attention to what's going on around you. This isn't rocker science.
Yet apparently something that was crystal clear wasn't even a close call. Go figure. Sounds like a cover up at DOJ could be in the works. Oh, wait, who's running that shop?
