NIST 800-171 Rev 3 Changes: What They Mean for MSP Clients
NIST Special Publication 800-171 defines the security requirements for protecting Controlled Unclassified Information in non-federal systems. It's the foundation for CMMC Level 2 and—as of January 2026—the basis for GSA's civilian CUI protection requirements. Revision 3 brings significant changes that affect how MSPs implement, document, and verify compliance for their clients.

