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controlAC-21
Information Sharing (AC-21)
Enable authorized users to determine whether access authorizations assigned to a sharing partner match the information’s access and use restrictions for [organization-defined] ; and Employ [organization-defined] to assist users in making information sharing and collaboration decisions.
Security Baselines
MODERATEHIGHLOW
access-controlauthorizationleast-privilege
Why These Connect
Baselined In2
This control is included in the linked security baseline (LOW, MODERATE, or HIGH).
Supports10
These related controls work together — a change to one may affect the others.
Enhances2
These enhancements add specific capabilities or refinements to the base control.
Related Controls(7)
AC-3Access Enforcement (AC-3)
LMH
AC-4Information Flow Enforcement (AC-4)MH
AC-16Security and Privacy Attributes (AC-16)PT-2Authority to Process Personally Identifiable Information (PT-2)PT-7Specific Categories of Personally Identifiable Information (PT-7)RA-3Risk Assessment (RA-3)LMH
SC-15Collaborative Computing Devices and Applications (SC-15)LMH