Training & Education

How do you properly mark Controlled Unclassified Information? This guide explains how to identify, label, and protect CUI across documents, computers, digital media, manufacturing areas, and controlled workspaces. It covers core CUI marking requirements, best practices by media type, common audit-failure mistakes, and a simple step-by-step framework for building a consistent CUI marking program aligned with NIST SP 800-171, DFARS 252.204-7012, and CMMC.

If you work with the Department of Defense (DoD) or support the Defense Industrial Base (DIB), you’ve almost certainly heard the term CUI—but it’s also one of the most misunderstood concepts in compliance. Understanding Controlled Unclassified Information (CUI) is foundational to DFARS, NIST SP 800-171, and CMMC compliance. This guide breaks it down clearly and practically.

Does ITAR or EAR-controlled technical data count as CUI under a DoD contract? In many cases, yes. When export-controlled technical data or technology is provided by the government or generated during DoD contract performance, it may qualify as CUI and require proper marking, access controls, and physical safeguarding. This guide explains how ITAR, EAR, DFARS 252.204-7012, and CUI requirements intersect, what manufacturers need to protect, and how to reduce compliance risk in engineering, production, quality, and visitor-access areas.

CMMC Mythbusters is BACK December 2025! The popular CMMC 2.0/ DFARS training and education series CMMC Mythbusters returns December 15th- 19th, 2025! Once a six-part series, we have now condensed down to three parts, jam-packed with the latest updates and info you need to know to be compliant.  Join us live for the highly anticipated return of CMMC Mythbusters, led by the Chairman of the CMMC Industry Standards Council (CISC) and Chief Transformation Officer of DTC Global, Regan Edens. Sign up for each part via the links below:  Part 1: "What Exactly Is CUI (Controlled Unclassified Information)?" Part 2: "Commercial-Off-the-Shelf (COTS) vs CUI?" Part 3: "Identifying & Properly Marking CUI" This complimentary series is brought to by CUI Supply, DTC Global, and the University of Texas- Arlington. 

CMMC Phase I is officially HERE! Are you ready to go? Read more about the Final Rule below: Prepare with CUI Supplies HERE: https://cuisupply.com/

❗❗ATTENTION ❗ ❗CMMC Phase I officially begins NOVEMBER 10TH, 2025! If you haven't started preparing already, the time is NOW! We want to help you get ready. Get 10% off your order total, automatically applied at checkout, at CUISupply.com.DO NOT WAIT! Get ready NOW. To read more about the Final Rule, click HERE:

Important clarifications provided by the DoD were recently released on the CMMC Phase I timeline and the impact on contracts after the effective date. The deadline is September 2025... Are you ready?