Standardizing Security: A Deep Dive into DoD CUI Rules

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In this episode of CMMC News, we break down DoD Instruction 5200.48—the Department of Defense’s rulebook for handling Controlled Unclassified Information (CUI). Hosts take you through what CUI really means, why the DoD created a standardized approach, and what it takes to handle, mark, and share sensitive information properly. Learn why it’s critical for both DoD staff and contractors, what the marking and safeguarding requirements look like in real life, and how agencies and industry partners share the responsibility for CUI protection. With insights into NIST 800-171, legacy document handling, day-to-day challenges, and the penalties for missteps, this deep dive gives listeners a practical take on why understanding CUI is essential to compliance and security across the defense ecosystem.

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