AC-4(19)—Validation Of Metadata
>Control Description
When transferring information between different security domains, implement ⚙organization-defined security or privacy policy filters on metadata.
>Cross-Framework Mappings
>Supplemental Guidance
All information (including metadata and the data to which the metadata applies) is subject to filtering and inspection. Some organizations distinguish between metadata and data payloads (i.e., only the data to which the metadata is bound). Other organizations do not make such distinctions and consider metadata and the data to which the metadata applies to be part of the payload.
>Assessment Interview Topics
Questions assessors commonly ask
Process & Governance:
- •What formal policies and procedures govern the implementation of AC-4(19) (Validation Of Metadata)?
- •Who are the designated roles responsible for implementing, maintaining, and monitoring AC-4(19)?
- •How frequently is the AC-4(19) policy reviewed and updated, and what triggers policy changes?
- •What training or awareness programs ensure personnel understand their responsibilities related to AC-4(19)?
Technical Implementation:
- •Describe the specific technical mechanisms or controls used to enforce AC-4(19) requirements.
- •What automated tools, systems, or technologies are deployed to implement AC-4(19)?
- •How is AC-4(19) integrated into your system architecture and overall security posture?
- •What configuration settings, parameters, or technical specifications enforce AC-4(19) requirements?
Evidence & Documentation:
- •What documentation demonstrates the complete implementation of AC-4(19)?
- •What audit logs, records, reports, or monitoring data validate AC-4(19) compliance?
- •Can you provide evidence of periodic reviews, assessments, or testing of AC-4(19) effectiveness?
- •What artifacts would you present during a FedRAMP assessment to demonstrate AC-4(19) compliance?
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