Need to know is the name of the game

This is one reason why in communities like this, information should be shared on a "need to know" basis, rather than the "open book/I trust you/I've got nothing to hide anyways" basis that is more typical of on- and offline group relationships. Just about everyone here has something to hide, even if it's just the fact that they post here. They should assume everyone else has something to hide and go out of their way not to ask probing questions and not give out personal information when asked. Instead, when asked probing questions, remind the other person that such questions are best left unasked and unanswered. If someone insists on telling you about themselves, politely use that as an opportunity to say "Stop, you don't know me, you don't know if my email is being monitored or my phone bugged, and you don't know anyone else that well either save maybe your immediate family or lover. Learn to keep things to yourself."