Privilege is a legal rule prohibiting disclosure of private information against one’s will. It requires courts and other entities to prohibit the disclosure of this information in court and respect the client’s privacy.
Privilege applies in many different professional relationships, including between an attorney and their client, as well as doctor-patient, therapist-patient, and clergy-penitent relationships among others.
Privilege can be thought of as a possession that is held by the client, so that they can protect their own sensitive information and keep themselves safe. However, there are limitations on privilege, and it can be waived if the client decides to.