What Level of System and Network Configuration Is Required for CUI?
In this article, we attempt to answer the question – What Level of System and Network Configuration Is Required for CUI? Controlled Unclassified Information (CUI) refers to sensitive data that requires safeguarding but is not classified under federal law. Organizations handling CUI must implement specific system and network configurations to ensure its protection. The National Institute of Standards and Technology (NIST) provides guidelines, particularly in Special Publication 800-171 (SP 800-171), outlining the necessary security requirements.
Understanding the Required Confidentiality Level
For CUI, the required level of system and network configuration is Moderate Confidentiality. This level ensures that the information is adequately protected against unauthorized disclosure, which could cause serious adverse effects on organizational operations, assets, or individuals.
Key System and Network Configuration Requirements
To achieve the Moderate Confidentiality level, organizations must implement the following controls as specified in NIST SP 800-171:
1. Access Control
- Limit system access to authorized users.
- Implement role-based access controls to ensure users have access only to the information necessary for their roles.
2. Audit and Accountability
- Create and maintain audit logs of system activities.
- Regularly review logs to detect and respond to unauthorized activities.
3. Identification and Authentication
- Use multifactor authentication to verify user identities.
- Ensure unique user identification to prevent unauthorized access.
4. Incident Response
- Develop and implement an incident response plan.
- Train personnel to recognize and report security incidents promptly.
5. System and Communications Protection
- Employ encryption to protect CUI during transmission and storage.
- Implement boundary protection to monitor and control communications at external boundaries.
6. System and Information Integrity
Compliance and Assessment
Organizations must conduct self-assessments to evaluate their compliance with NIST SP 800-171. Maintaining an up-to-date System Security Plan (SSP) and a Plan of Action and Milestones (POA&M) is crucial for documenting compliance efforts and addressing any deficiencies.
Protecting Controlled Unclassified Information requires a Moderate Confidentiality level of system and network configuration. By adhering to the guidelines set forth in NIST SP 800-171, organizations can ensure the security of CUI and maintain compliance with federal requirements.
Last Updated: April 16, 2025
