CUI is government information that isn't classified but still requires protection - things like technical drawings, specifications, and other sensitive-but-unclassified data. When CUI reaches your systems, it triggers real obligations: NIST 800-171, DFARS 252.204-7012, and (when it returns) CMMC.
Book a 15-minute review →CUI vs FCI: Federal Contract Information (FCI) is basic information provided by or generated for the government under a contract, and it triggers a lighter safeguarding standard (FAR 52.204-21). CUI is more sensitive and triggers the full NIST 800-171 baseline under DFARS 252.204-7012. Knowing which you handle determines your obligations.
How CUI reaches you: it flows down through contracts and purchase orders. A prime working on a DoD program passes controlled technical data to suppliers, who pass it further down. Many small manufacturers are surprised to learn a drawing on their shop network is CUI - and that it brought a compliance obligation with it.
Why scoping matters: your compliance boundary is defined by where CUI lives, moves, and is processed. Contain it to fewer systems and your assessment scope, cost, and risk all shrink. Let it sprawl across every laptop and share, and your obligations expand with it.
MDRwatchdog monitors the systems where CUI actually lives, helps you understand your boundary, and maps that environment to the NIST 800-171 controls that protect it - generating the evidence you need to show you're safeguarding it. Readiness and evidence, not legal advice - confirm CUI categorization with your contracting officer.
Controlled Unclassified Information is sensitive-but-unclassified government information - for example controlled technical data, drawings, and specifications - that requires safeguarding under NIST 800-171 and DFARS 252.204-7012 when it reaches your systems.
FCI (Federal Contract Information) triggers basic safeguarding under FAR 52.204-21. CUI is more sensitive and triggers the full NIST 800-171 baseline under DFARS 252.204-7012.
Scope tightly. Contain CUI to as few systems as possible - a defined enclave - so your compliance boundary, cost, and risk stay small rather than spreading across your whole environment.
MDRwatchdog provides security monitoring and compliance evidence to support readiness. It is not a certification and not legal advice. Certification and formal audits are performed by the appropriate authorized bodies (a C3PAO for CMMC, a licensed CPA firm for SOC 2, an accredited body for ISO 27001).