AC-3(5): Security-relevant Information

Control Family:

Access Control

CSF v1.1 References:


(Not part of any baseline)

Previous Version:

Control Statement

Prevent access to [Assignment: organization-defined security-relevant information] except during secure, non-operable system states.

Supplemental Guidance

Security-relevant information is information within systems that can potentially impact the operation of security functions or the provision of security services in a manner that could result in failure to enforce system security and privacy policies or maintain the separation of code and data. Security-relevant information includes access control lists, filtering rules for routers or firewalls, configuration parameters for security services, and cryptographic key management information. Secure, non-operable system states include the times in which systems are not performing mission or business-related processing, such as when the system is offline for maintenance, boot-up, troubleshooting, or shut down.