BSI-100-2: S 4.13: Careful allocation of identifiers: Every group log-in name must be unique


Every log-in name, every user ID (UID) and every group ID (GID) must be unique. Even after deletion of a user or a group, the log-in name ... should not be reassigned for a certain period of time. On networked systems, steps must be taken to ensure that it is not possible for the same usernames and IDs to be assigned elsewhere on the system more than once.

Safeguard Catalogues: S 4: Hardware and software

S 4.13: Careful allocation of identifiers

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Item Details


References: 800-53|IA-4d.

Plugin: Unix

Control ID: fcee05baa097f4d1357eb1c81ec0bb5592b4e3c5f57288b95a475e2c2e019cfb