Mapped to NIST 800-171 Requirement: 3.8.1
CMMC Assessment Objective: MP.L2-3.8.1[c]
What This Objective Means
This is the final validation step for MP.L2-3.8.1. It ensures your organization has:
• An up-to-date, complete list of media types that contain CUI
• Identified where CUI is actually stored or transmitted
• Implemented safeguards based on this identification
• Verified that employees know which media types require protection
This is not just about documentation—it’s about operational awareness and real-world identification.
Why It Matters
CUI can easily be mishandled if it exists on:
• Undocumented USB drives
• Forgotten backup devices
• Misconfigured cloud storage
• Unsecured printed records
Without full awareness of CUI-bearing media, you risk:
• Data spillage
• Accidental loss or exposure
• Failed compliance assessments
This control ensures nothing falls through the cracks.
How to Implement It
1. Conduct a CUI Media Inventory
• Review where CUI resides—both digitally and physically
• Include:
◦ Endpoint storage (laptops, desktops)
◦ Cloud storage (SaaS platforms, shared drives)
◦ Portable storage (USBs, hard drives, SD cards)
◦ Paper documents or printouts
2. Tag and Classify Media
• Apply labels or metadata where applicable (e.g., “CUI” tag on cloud storage folders)
• Maintain lists in your asset management or compliance systems
3. Validate With End Users and IT Teams
• Ask departments to confirm how and where they handle CUI
• Check if any storage methods have been overlooked
4. Cross-Check With Your Documentation
• Ensure your documented list from MP.L2-3.8.1[b] matches what’s found in the environment
5. Update Regularly
• Review media types whenever systems or workflows change
Evidence the Assessor Will Look For
• Confirmed inventory of media types containing CUI
• System scan reports, media tracking logs, or asset management exports
• Staff awareness of approved media types
• Consistency between documented and observed media usage
• Proof that newly introduced media types are evaluated for CUI impact
Common Gaps
• Media listed in documentation, but not identified across real systems
• Staff unaware of which media types can hold CUI
• Cloud storage or BYOD usage overlooked
• No validation procedures for media changes or additions
How Cuick Trac Helps
Cuick Trac supports this requirement by:
• Scanning environments to help identify actual media in use
• Supporting tagging, classification, and CUI designation of media
• Restricting unauthorized or unmanaged storage platforms
• Providing reports and audit logs to show what types of media are currently storing CUI
• Helping reconcile your documentation with your real-world system state
With Cuick Trac, CUI never hides in unmanaged or unknown media.
Final CTA
Compliance begins with visibility.
Schedule a Cuick Trac demo to confirm that all CUI media in your environment is identified, known, and protected.