An operating system data object containing information identifying a user to operating systems. A user account, for example, has the user’s name and password, the user account’s group memberships, and the user’s rights and permissions for accessing the system and its resources. A user manager is an operating system utility enabling those having administrative privileges to define user accounts and relevant privileges and to change them when necessary. Symantec Security Response. Glossary. [Online, July 15, 2004.] Symantec Security Response Website. http://securityresponse.symantec.com/avcenter/refa.html.