During a quarterly access review, the security team discovers that several employees have accumulated permissions far beyond what their jobs require. To correct this, administrators will create predefined job-function groups such as Accounts Payable Clerk, Payroll Manager, and System Administrator, assign only the minimum necessary privileges to each group, and then map individual users to the appropriate group. Which access control model BEST supports this remediation strategy?
Role-based access control (RBAC) associates permissions with well-defined job functions, allowing administrators to enforce least privilege simply by assigning users to roles. Discretionary access control (DAC) leaves permission decisions to individual data owners, not central administrators. Mandatory access control (MAC) relies on system-enforced labels and clearances, not job roles. Attribute-based access control (ABAC) evaluates combinations of subject, object, and environmental attributes rather than fixed job-function groups. Therefore, RBAC is the most suitable model for the scenario.
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ISC2 CISSP
Identity and Access Management (IAM)
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