It's very difficult these days to not violate federal criminal statute in one way or another, doubly so for someone who works for the government in a high security environment. The fact that most people never get prosecuted for these crimes boils down to discretion and investigatory focus. Based on my experiece I doubt more than a tiny fraction of intelligence workers haven't violated secrecy laws in some mild form, such as casual conversation between coworkers or ex-coworkers.