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(a): Establish and administer privileged user accounts in accordance with [one of "a role-based access scheme"/"an attribute-based access scheme"];
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(b): Monitor privileged role or attribute assignments;
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(c): Monitor changes to roles or attributes; and
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(d): Revoke access when privileged role or attribute assignments are no longer appropriate.
Supplemental
Privileged roles are organization-defined roles assigned to individuals that allow those individuals to perform certain security-relevant functions that ordinary users are not authorized to perform. Privileged roles include key management, account management, database administration, system and network administration, and web administration. A role-based access scheme organizes permitted system access and privileges into roles. In contrast, an attribute-based access scheme specifies allowed system access and privileges based on attributes.