AC-4(17)—Domain Authentication
>Control Description
>Cross-Framework Mappings
>Supplemental Guidance
Attribution is a critical component of a security and privacy concept of operations. The ability to identify source and destination points for information flowing within systems allows the forensic reconstruction of events and encourages policy compliance by attributing policy violations to specific organizations or individuals. Successful domain authentication requires that system labels distinguish among systems, organizations, and individuals involved in preparing, sending, receiving, or disseminating information.
Attribution also allows organizations to better maintain the lineage of personally identifiable information processing as it flows through systems and can facilitate consent tracking, as well as correction, deletion, or access requests from individuals.
>Related Controls
>Assessment Interview Topics
Questions assessors commonly ask
Process & Governance:
- •What formal policies and procedures govern the implementation of AC-4(17) (Domain Authentication)?
- •Who are the designated roles responsible for implementing, maintaining, and monitoring AC-4(17)?
- •How frequently is the AC-4(17) policy reviewed and updated, and what triggers policy changes?
- •What training or awareness programs ensure personnel understand their responsibilities related to AC-4(17)?
Technical Implementation:
- •Describe the specific technical mechanisms or controls used to enforce AC-4(17) requirements.
- •What automated tools, systems, or technologies are deployed to implement AC-4(17)?
- •How is AC-4(17) integrated into your system architecture and overall security posture?
- •What configuration settings, parameters, or technical specifications enforce AC-4(17) requirements?
Evidence & Documentation:
- •What documentation demonstrates the complete implementation of AC-4(17)?
- •What audit logs, records, reports, or monitoring data validate AC-4(17) compliance?
- •Can you provide evidence of periodic reviews, assessments, or testing of AC-4(17) effectiveness?
- •What artifacts would you present during a FedRAMP assessment to demonstrate AC-4(17) compliance?
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