Normal workflows push CUI past CMMC enclave boundaries
When CUI flows through collaboration platforms and subcontractor correspondence, the compliance surface expands beyond the enclave boundary that most preparation efforts are built around.
TL;DR
A Federal News Network commentary argues CMMC compliance programs share a blind spot: the assumption that CUI stays where you put it. In practice, controlled technical information propagates through Teams, email, cloud storage, and subcontractor correspondence as a byproduct of ordinary business. An organization can achieve certification and fall out of scope within days, not through policy failure, but through the normal velocity of project work.
Most CMMC preparation focuses on securing a defined enclave, the systems where CUI is supposed to reside. Organizations implement access controls, encryption, and monitoring within that boundary, self-assess against NIST SP 800-171 controls, and submit their SPRS score. The architecture diagram looks clean.
The problem, as the Federal News Network commentary details, is that CUI doesn't respect that diagram. When an engineer copies controlled technical specifications into a Teams channel, or a program manager references them in a shared SharePoint draft, or finance pulls cost data for a subcontractor invoice, none of this is negligence. It's ordinary collaboration. But each action extends CUI exposure beyond the compliance boundary the system security plan defines.
The same patterns play out daily across the defense industrial base: subcontractor correspondence referencing controlled requirements, employee records with clearance information, quality reports containing technical data, and meeting notes discussing export-controlled capabilities. The information wasn't mishandled. It flowed through channels that simply exist outside the enclave.
This creates a gap that point-in-time assessments are poorly positioned to catch. Assessments capture what's inside the boundary on assessment day. They don't capture the propagation that happens through normal business activity the rest of the week. A contractor can be certified on Monday and operating outside scope by Friday.
The commentary's comparison to HIPAA sharpens the point. In healthcare, a patient's name isn't protected when booking an appointment. Once treatment occurs and that identifier joins a medical record, it becomes PHI. The data didn't change. The context did. CUI operates the same way, the protection obligation follows the context, not the label.
For practitioners, the implication is straightforward: scoping CMMC to a static enclave may satisfy a phase-one assessment but won't reflect where CUI actually lives inside the organization. The compliance surface maps to the workflow. It rarely matches the boundary drawn on the architecture diagram.
Published ·Deep Fathom