What DoD Contractors Are Actually Experiencing during C3PAO Assessments And How to Prepare
Cybersecurity Maturity Model Certification (CMMC) is no longer a future requirement—it’s happening now. For defense contractors, the shift from preparation to real assessments is already underway. Many organizations are finding that the process is far more rigorous than expected.
In a recent Core Business Solutions webinar, experts and assessors shared insights from real CMMC assessments.
They covered common pitfalls and what assessors look for.
They also explained how contractors can prepare for success.
If your organization works with Controlled Unclassified Information (CUI), this article tells you what you need to know.
It also applies if you plan to bid on DoD/DoW contracts.
The Reality: CMMC Assessments Are Already Happening
CMMC is currently in Phase 1, with assessments actively being conducted by Certified Third-Party Assessment Organizations (C3PAOs). Contractors are rushing to get scheduled—but there’s a problem:
- Far fewer assessors exist than contractors.
- Scheduling delays are already 3–6+ months out
- Demand will spike further as Phase 2 begins
Only a small fraction of companies have completed assessments so far, compared to the tens of thousands that will eventually need certification.
Bottom line: Waiting is no longer an option—early preparation is critical.
What Assessors Are Truly Looking For
A common misconception is that CMMC is just a checklist. In reality, assessors evaluate each control using a three-part validation method:
- Policies – Is it documented?
- Procedures – Is there a defined process?
- Evidence – Can you prove it’s working?
A control is considered “met” only when all three are satisfied.
The Biggest Gap: Documentation vs Reality
Many companies fail because:
- Their System Security Plan (SSP) is too vague
- Documentation doesn’t match actual practices
- Evidence can’t be produced during the assessment
If your SSP doesn’t reflect your real environment, expect findings.
Understanding the CMMC Assessment Process
The assessment follows a structured four-phase process:
- Plan & Prepare (Scoping + Documentation)
- Assessment (Interviews, testing, evidence review)
- Scoring & Reporting
- Certification or POAM Closeout
Possible Outcomes:
- Full Certification (110/110 score)
- Conditional Certification (88–109 score + POAM)
- Fail (Below 88 or critical gaps)
Common Findings That Trip Up Contractors
Even well-prepared companies run into issues. The most frequent findings include:
- Logs not retained or monitored
- Multi-factor authentication enabled but not documented
- Incident response plans not tested
- Missing or outdated evidence
- Gaps between SSP and actual implementation
Key insight: “If it isn’t documented and provable, it doesn’t exist to an assessor.”
Scoping: The Hidden Complexity Most Companies Miss
One of the biggest surprises in CMMC assessments is what ends up in scope.
It’s not just your internal systems—assessors also evaluate:
- Cloud providers (e.g., Microsoft 365)
- Managed service providers (MSPs)
- Security tools and monitoring systems
- Backup and email filtering solutions
Even systems that don’t store CUI directly may still be in scope if they handle security protection data (SPD).
Poor scoping can lead to:
- Increased cost
- Failed assessments
- Major delays
The Importance of Evidence (Build It Early)
One of the strongest recommendations from assessors:
Build your evidence as you implement controls—not at the end.
Examples of strong evidence include:
- Configuration screenshots
- Logs showing active monitoring
- Backup reports
- Patch management records
Continuous processes (logging, monitoring, patching) must show current, ongoing proof, not a one-time setup.
POAMs: Helpful, But Limited
A Plan of Action and Milestones (POAM) allows contractors to fix certain gaps—but there are strict limitations:
- Only applies to specific, low-risk controls
- Must be resolved within 180 days
- Failure to close = loss of certification
Many companies misunderstand this and assume they can “fix things later”—that’s risky.
The Legal Risk: CMMC Is Not Just Compliance
One of the most critical (and overlooked) aspects of CMMC is legal liability.
When contractors submit their status:
- A senior executive must certify compliance
- Submissions go into the SPRS database
- False claims can trigger DOJ enforcement
In 2025 alone:
- $52 million in fines were recovered
- Cases focused on misrepresentation—not breaches
This means: CMMC is not just an IT issue—it’s a leadership-level legal responsibility.
Real Costs and Timeline Expectations
Typical C3PAO assessment costs:
- ~$40,000–$50,000 for small to mid-sized companies
- Higher for complex or multi-site environments
Timeline considerations:
- 3–6 months to schedule
- Additional time for preparation and remediation
You cannot “rush” CMMC in a few weeks.
Key Takeaways for Contractors
From the webinar, these are the most critical actions to take:
1. Define Your Scope Early
Include systems, providers, and people—not just data.
2. Build Documentation That Reflects Reality
Your SSP must match how your environment actually operates.
3. Collect Evidence Continuously
Don’t wait until assessment time.
4. Prepare for a 110 Score
Entering an assessment below that threshold is high risk.
5. Engage Leadership
CMMC accountability starts at the top.
6. Start Now
Assessment bottlenecks are already forming.
Final Thoughts: The Contractors Who Succeed
According to assessors, the companies that perform best share three traits:
- Clear, accurate scope
- Strong, organized evidence
- Experienced support during the assessment
CMMC isn’t just another compliance exercise—it’s a business requirement with real consequences.
Organizations that act early will gain an edge. Those who wait may miss out on bidding for contracts. If you need help with CMMC assessment preparation, contact us today.
