CMMC Assessment Checklist
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RACI and CMMC: Mapping Responsibility for Cybersecurity Compliance
For Department of Defense (DoD) contractors navigating the complexities of the Cybersecurity Maturity Model Certification (CMMC), the path to compliance is a structured process demanding not only the implementation of technical security controls but also rigorous documentation and clear organizational governance. In this environment, ambiguity means risk. When everyone is supposedly responsible for a security task, the result can be that no one actually does it.
This is where the RACI matrix, a classic tool of project and process management, becomes valuable. By integrating RACI with your CMMC readiness strategy, organizations can transform an overwhelming list of security requirements into a manageable, auditable assignment of duties.
What is RACI?
RACI (pronounced "ray-see") is an acronym that describes the four key roles stakeholders play in completing any task or deliverable. A RACI matrix maps tasks (on the vertical axis) to specific individuals or organizational roles (on the horizontal axis). The four roles are:
- Responsible (R): The person who actually performs the work to complete the task. They are the "doers."
- Accountable (A): The person who holds ultimate authority over the successful completion of the task. They are the "owner" of the outcome. There must be only one Accountable party assigned to each task.
- Consulted (C): Those whose opinions are sought before the task is finalized. They are subject matter experts (SMEs) with whom two-way communication occurs.
- Informed (I): Those who are kept updated on the progress or completion of the task. Communication is typically one-way (updates or notifications).
The CMMC Connection: From Controls to Clarity
CMMC, particularly at Level 2, requires contractors to meet 110 security requirements based on NIST SP 800-171r2. These requirements cover broad domains such as Access Control, Configuration Management, and Incident Response. Simply implementing the technical aspects of these controls is not sufficient for certification. The DoD must have assurance that these controls are managed, sustained, and systematically documented.
RACI assists with this because it provides the structure necessary to demonstrate operational maturity and governance. When a third-party assessor (a C3PAO) evaluates an organization, they are not just looking for a firewall; they are looking for the processes around the firewall. RACI helps define those processes by clarifying "who does what."
For example, consider CMMC requirement 3.1.2: "Monitor and control remote access sessions." A standard implementation might rely on a Managed Service Provider (MSP) to configure a Virtual Private Network (VPN). However, CMMC asks deeper operational questions:
- Responsible: Who actually configures the VPN and monitors the real-time logs? (This might be the MSP's security team).
- Accountable: Who at the contractor organization authorizes remote users and signs off that the remote access policy is being strictly followed? (This might be the contractor’s Chief Information Security Officer (CISO).
- Consulted: Whose input is needed regarding which job roles require remote access? (Perhaps department managers).
- Informed: Who needs to be notified of remote access policy updates or an incident related to remote access? (Relevant users or human resources).
RACI and the Shared Responsibility Matrix
The relationship between RACI and CMMC is particularly important in the realm of shared responsibility. Very few defense contractors manage their entire IT stack internally. Most rely on external service providers (ESPs), such as cloud hosting (AWS, Azure) or MSPs.
This is not the case. Contractors often assume that because they use a secure cloud provider, they automatically meet all CMMC requirements. This is incorrect. Security responsibility is always shared.
A CMMC Shared Responsibility Matrix (SRM) uses the RACI model to document precisely how that sharing works. It assigns R, A, C, or I designations to the contractor and to the ESP for every single CMMC assessment objective.
A robust SRM might look like this for Incident Response (Requirement 3.6.2):
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** Contractor:**
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Accountable (A): The contractor CISO owns the overall incident response capability and decision to notify the DoD.
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Responsible (R): The contractor designates a single internal liaison to manage the coordination.
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MSP (Service Provider):
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Responsible (R): The MSP is responsible for the technical detection of anomalies and conducting the initial triage.
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Consulted (C): The MSP provides forensic data and SME input to help the contractor finalize the incident report.
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Without this level of clarity, both parties may assume the other is handling detection or mitigation, creating a critical vulnerability and a potential compliance failure during an assessment.
RACI and shared responsibility charts also are beneficial should a contractor shift from one ESP to another. By sharing the chart, the new vendor can catch up quickly and can also get an immediate sense of expectations and the workloads. This preemptively clears up a lot of potential confusion.
Conclusion
CMMC is not a checklist of technical settings. Instead, it is an ongoing process of security governance and maturity. While technical implementation is a major step, successful certification requires an organizational structure that supports accountability.
The RACI matrix provides a useful blueprint. By defining who performs the work, who owns the outcome, and who needs input for every CMMC control, organizations move beyond compliance by assumption. They create a mature, sustainable, and auditable security framework where every duty is clearly assigned, and every responsibility is understood.