>Where's the invasion of privacy? In both cases. Yours is understandable and forgivable. Charlie's privacy may have been violated, but it was a simple mistake

>Where's the invasion of privacy? In both cases. Yours is understandable and forgivable. Charlie's privacy may have been violated, but it was a simple mistake. But suppose you say to Alice, "Tell me all the people you know. I'll tell you which ones I know too." If you then write down that list and systematically start telling them about each other and that they have Alice as a mutual friend, then you're a privacy-invading jerk, and Alice was wrong to trust you.