Sources & Official References

Quick answer: Prefer primary sources over blogs (including ours) for requirements that affect contracts. This page lists starting points we point people toward. Always confirm current versions.

Standards & baselines

NIST SP 800-171 Rev 2 — Protecting CUI in nonfederal systems
NIST SP 800-171 Rev 3 — Updated baseline (confirm applicability for your contracts)
NIST — standards organization home

CMMC program

DoD CMMC program — official program information
DoD CIO — cyber policy context

SPRS & acquisition

SPRS (DISA) — Supplier Performance Risk System
DFARS — Defense Federal Acquisition Regulation Supplement
Acquisition.gov — FAR / DFARS portal

CUI

National Archives — CUI Program

How we use these

DefensibleScore articles translate these topics for small contractors. They are educational and may lag official updates. If a page and a primary source disagree, trust the primary source and your contract language.

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