invasion of privacy
An intrusion into one's personal affairs. A noun or pronoun can be used between "of" and "privacy." I can't believe you read my diary, that's such an invasion of privacy! I'm telling Mom! No, actually, I don't have to answer your questions about my love life because they're a total invasion of my privacy.
invasion of (someone's) privacy
Fig. an intrusion that results in the loss of someone's privacy. Your invasion of my privacy is not welcome! The athlete complained about the invasion of his privacy by the press.