Internet privacy consists of privacy over the media of the Internet: the ability to control what information one reveals about oneself over the Internet, and to control who can access that information. Many people use the term to mean universal Internet privacy: every user of the Internet possessing Internet privacy. Internet privacy forms a subset of computer privacy. A number of experts within the field of Internet security and privacy believe that security doesn't exist; "Privacy is dead - get over it" according to Steve Rambam, private investigator specialising in Internet privacy cases. Privacy advocates believe that it should exist.