user
user: 1. A person, organization, or other entity (including a computer or computer system), that employs the services provided by a telecommunication system, or by an information processing system, for transfer of information. Note: A user functions as a source or final destination of user information, or both. Synonym subscriber. 2. [In security, a] person or process authorized access to an IS (information system); [an] individual defined, registered, and bound to a public key structure by certification authority. [INFOSEC-99]