AC.L2-3.1.4 Separation of Duties: CMMC Level 2 Guide
Separation of duties is a foundational security control that reduces the risk of malevolent activity by ensuring no single individual has complete control over critical business processes. This CMMC Level 2 requirement prevents insider threats and unauthorized actions that require collusion to execute. Implementing proper duty segregation across your organization strengthens your compliance posture and protects sensitive data.
What this means
Separation of duties requires dividing responsibilities and access privileges among multiple individuals so that one person cannot unilaterally compromise a critical system or process. This control prevents both accidental errors and intentional malicious actions by requiring multiple approvals, checks, or handoffs. For CMMC compliance, you must document which duties are incompatible and enforce role-based restrictions that prevent conflicts of interest.
How to comply
- 1.Identify critical business processes and systems that require separation (e.g., approval workflows, system administration, financial transactions)
- 2.Map current job responsibilities and system access rights to detect conflicts of interest or incompatible duties
- 3.Define role-based access controls (RBAC) that separate incompatible functions—such as preventing the same person from requesting, approving, and reconciling transactions
- 4.Document separation of duties policies in your security policies and procedures
- 5.Implement technical controls in your systems to enforce duty separation (e.g., workflow approvals, access control lists)
- 6.Train employees on their assigned roles and the importance of duty separation
- 7.Regularly audit role assignments and access logs to detect and remediate violations
- 8.Monitor for circumvention attempts and maintain an evidence trail of who performed what actions
Evidence auditors look for
- Documented separation of duties policy defining incompatible roles and responsibilities
- Role-based access control (RBAC) matrix mapping users to system functions and data access
- System access logs showing that conflicting duties are enforced (e.g., approval chains requiring different users)
- Job descriptions or role definitions that clearly separate duties
- Audit reports demonstrating compliance with duty separation rules
- Workflow configurations requiring multiple approvers for critical transactions
- User access reviews showing segregation of incompatible functions
- Change management logs showing dual-control or approval requirements for critical changes
Frequently asked questions
When will FAQs be available?
The FAQ for this control is currently being prepared.
GRCWatch automatically maps your user roles and system access to identify separation of duties conflicts, generates compliance-ready audit reports, and alerts you when policy violations occur—eliminating manual reviews and audit prep work.
See how GRCWatch handles this control automatically
Start free trial