CMMC "Significant Changes": Do They Really Invalidate Your Certification?

Cybersecurity Maturity Model Certification (CMMC) Unlocked · Mar 3, 2026 · 17m

In this episode of CMMC Unlocked, host Paul Netopski breaks down one of the most misunderstood phrases in the new CMMC rule set and CyberAB guidance: “significant changes.” Many small defense contractors and their advisors worry that any major IT or organizational change will automatically invalidate a hard‑won Level 2 certification. Paul walks through what the 32 CFR Part 170 preamble, the Level 2 Scoping Guide, and the Level 2 Assessment Guide actually say—and what they don’t. We unpack the distinction between: When “significant architectural or boundary changes” require a new certification…