Why Most Government Contractor Risk Assessments Fall Short
A risk assessment is one of the most consequential activities a defense contractor can undertake. Done correctly, it becomes the foundation of your entire compliance posture — informing your System Security Plan, driving your Plan of Action and Milestones, and demonstrating to auditors that your organization understands its own threat environment. Done poorly, it creates a false sense of security, exposes you to contract loss, and in some cases, triggers regulatory scrutiny you were trying to avoid.
After working with hundreds of defense contractors across the federal and defense industrial base, our team at Cleared Systems has seen the same errors surface repeatedly. These are not obscure edge cases. They are systematic mistakes made by organizations that believe they are doing the right thing — but are missing critical elements that auditors, DCSA reviewers, and C3PAOs will find immediately.
Here are the six most costly mistakes defense contractors make during a government contractor risk assessment — and what you need to do differently.
Mistake 1: Scoping the Assessment Too Narrowly
The most common and damaging mistake is defining the assessment boundary in a way that excludes systems, personnel, or locations that actually process, store, or transmit Controlled Unclassified Information. Contractors often scope around their primary IT environment and forget about shared drives, personal devices used for remote work, subcontractor connections, cloud storage repositories, and shop floor systems.
Under NIST SP 800-171 and CMMC requirements, your assessment must cover your entire CUI environment — not just the systems that are easy to document. Assessors will ask where CUI flows, and if your scoping decisions cannot hold up to that question, your assessment is invalid before it begins.
A proper scoping exercise includes data flow mapping, an asset inventory review, and interviews with personnel across departments — not just IT. Our post on what a CUI boundary assessment involves explains why this step deserves its own focused effort before any formal risk assessment begins.
Mistake 2: Treating the Risk Assessment as a One-Time Event
Defense contractors frequently conduct a risk assessment in response to a contract requirement, check the box, and then set the document aside for two or three years. This approach violates the continuous monitoring principles embedded in both NIST SP 800-171 and CMMC Level 2 requirements.
Your threat environment changes. Your systems change. Personnel turn over. New subcontractors are onboarded. Cloud services are adopted without formal review. Each of these events has the potential to introduce new risks that your original assessment never considered.
NIST SP 800-171 Revision 3 has reinforced this expectation, placing greater emphasis on ongoing risk management rather than point-in-time documentation. A risk assessment that was accurate 18 months ago is not evidence of a functioning risk management program today. Regulators know this, and they will ask about your assessment update cycle.
Mistake 3: Conflating Vulnerability Scanning With Risk Assessment
Running a vulnerability scan and calling it a risk assessment is one of the most persistent misconceptions in the defense contracting space. Vulnerability scanning identifies technical weaknesses in your systems. Risk assessment is a broader analytical process that evaluates threats, vulnerabilities, likelihood, impact, and the adequacy of existing controls across people, processes, and technology.
A complete government contractor risk assessment must address:
- Asset identification and classification
- Threat source and threat event identification
- Vulnerability identification across technical and non-technical controls
- Likelihood and impact determinations
- Risk prioritization and risk response decisions
- Documentation sufficient to support a defensible System Security Plan
Vulnerability scans are one input into this process. They are not a substitute for it. Organizations that rely solely on scan outputs typically discover this gap during their first formal audit — at significant cost to their timeline and their contract standing.
Mistake 4: Failing to Connect Risk Findings to the POA&M and SSP
A risk assessment that does not drive action is a compliance liability. We routinely see contractors who have conducted technically sound assessments but failed to map the findings to their Plan of Action and Milestones and System Security Plan in any meaningful way. The assessment findings sit in a separate document, never integrated into the operational compliance program.
This matters for two reasons. First, auditors reviewing your SSP and POA&M will look for evidence that risk findings informed your control implementation decisions. If there is no traceable connection, your documentation will not withstand scrutiny. Second, unaddressed risk findings that are visible in your assessment but absent from your remediation plan are a direct indicator of a non-functioning risk management program.
Our post on SSP and POA&M as critical compliance components provides guidance on how these documents must work together as a unified compliance posture — not as isolated deliverables.
Mistake 5: Ignoring Supply Chain and Third-Party Risk
Most defense contractors conduct their risk assessment as if their organization exists in isolation. They evaluate internal systems and processes but give little attention to the risk introduced by their subcontractors, managed service providers, cloud vendors, and other third parties who have access to their CUI environment.
This is a significant gap. DFARS 252.204-7012 requires adequate security across your entire supply chain, and CMMC has extended that obligation with explicit third-party requirements. If a subcontractor or IT vendor has access to systems where CUI resides, their security posture is your compliance responsibility.
A defensible government contractor risk assessment must include a review of third-party access, an evaluation of vendor security agreements, and a determination of whether those vendors meet applicable security requirements. Contractors who skip this step frequently discover downstream that a vendor relationship represents their single largest compliance exposure.
If your organization handles ITAR-controlled technical data in addition to CUI, third-party risk takes on additional dimensions. Our ITAR and export controls compliance practice addresses the intersection of vendor access and export control obligations that many contractors underestimate.
Mistake 6: Assigning the Assessment to Personnel Without the Right Authority or Expertise
Risk assessments are frequently delegated to IT staff who have strong technical skills but limited familiarity with the regulatory frameworks governing defense contractors, or to compliance staff who understand the frameworks but lack the technical depth to evaluate control effectiveness. Neither scenario produces a defensible assessment.
A credible government contractor risk assessment requires:
- Technical expertise sufficient to evaluate the actual state of your security controls
- Regulatory fluency across NIST SP 800-171, CMMC, DFARS, and applicable CUI requirements
- Organizational authority to interview personnel at all levels and access all relevant systems and documentation
- Independence sufficient to surface findings without internal political pressure to minimize them
When the person conducting the assessment lacks authority or independence, findings are routinely understated. This produces an inflated SPRS score, a non-representative SSP, and an organization that believes it is more compliant than it actually is — until an auditor arrives.
Many contractors address this by engaging a regulatory vCISO who brings both the technical and regulatory expertise required to conduct the assessment objectively and connect findings to a practical remediation roadmap. Others work with our team directly through a formal assessment engagement designed to meet DCSA and C3PAO expectations.
What a Defensible Risk Assessment Actually Looks Like
A well-executed government contractor risk assessment is not a paperwork exercise. It is a structured analytical process that produces findings your organization can act on and documentation that holds up under external review. It covers the full scope of your CUI environment, incorporates supply chain considerations, connects directly to your SSP and POA&M, and is updated on a defined cycle that reflects changes to your systems and threat environment.
If your current risk assessment was completed more than 12 months ago, was scoped only around your primary IT systems, or was never formally integrated into your compliance documentation, you are carrying risk that your existing assessment does not capture. That gap has real consequences — for your SPRS score, for your audit readiness, and for your ability to maintain and win federal contracts.
Our CMMC, CUI, and DFARS compliance practice helps defense contractors build risk assessments that meet current regulatory expectations and serve as the foundation for a mature, audit-ready compliance program.
Take the Next Step
If you are not confident that your current risk assessment would survive a DCSA review or a C3PAO audit, now is the time to find out — before an assessor does. Cleared Systems works with defense contractors at every stage of compliance maturity to conduct thorough, defensible risk assessments and build the documentation programs needed to sustain them. Request a quote to speak with our team about your current compliance posture, or explore our engagement models to see how we structure assessments for organizations like yours.