AC-9—Previous Logon Notification
>Control Description
Notify the user, upon successful logon to the system, of the date and time of the last logon.
>Control Enhancements(4)
>Cross-Framework Mappings
>Supplemental Guidance
Previous logon notification is applicable to system access via human user interfaces and access to systems that occurs in other types of architectures. Information about the last successful logon allows the user to recognize if the date and time provided is not consistent with the user's last access.
>Related Controls
>Assessment Interview Topics
Questions assessors commonly ask
Process & Governance:
- •What formal policies and procedures govern the implementation of AC-9 (Previous Logon Notification)?
- •Who are the designated roles responsible for implementing, maintaining, and monitoring AC-9?
- •How frequently is the AC-9 policy reviewed and updated, and what triggers policy changes?
- •What training or awareness programs ensure personnel understand their responsibilities related to AC-9?
Technical Implementation:
- •Describe the specific technical mechanisms or controls used to enforce AC-9 requirements.
- •What automated tools, systems, or technologies are deployed to implement AC-9?
- •How is AC-9 integrated into your system architecture and overall security posture?
- •What configuration settings, parameters, or technical specifications enforce AC-9 requirements?
Evidence & Documentation:
- •What documentation demonstrates the complete implementation of AC-9?
- •What audit logs, records, reports, or monitoring data validate AC-9 compliance?
- •Can you provide evidence of periodic reviews, assessments, or testing of AC-9 effectiveness?
- •What artifacts would you present during a FedRAMP assessment to demonstrate AC-9 compliance?
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