Security issues

The UnixWare 7 system employs the concept of ``privileges'' to control both the access that users have to information stored in files, and the ability of users to execute certain commands. Users who have been granted permission to execute administrative commands, or access system files, are said to be ``privileged'' users. A user can be granted all privileges, or only a subset. Privileges are particularly important in the area of system administration, because unauthorized changes to system files and use of commands can adversely affect the productivity of users and the usability of the operating system.