The right to privacy extends only to information through which the persons concerned are identifiable. This assumption is widely shared in law and in philosophical debate; it also guides the handling of personal data, for example, in medicine. However, this essay argues that the dissemination of anonymous information can also constitute a violation of privacy. This conclusion arises from two theses: (1) From the perspective of the affected person, judgments by others about anonymous information refer to its originator, even if (...) outsiders do not know who it is; (2) Our self-understanding is co-constituted by the judgment of others about us. This is a consequence of our social nature. There are certain areas of our lives that we do not want to expose to the gaze of others for our own sake. Therefore, the unauthorized dissemination of information concerning these areas can violate our privacy even if they are anonymous. While the question of the extent of privacy poses a general problem, there are reasons to discuss it in the context of digital medicine. (shrink)