What is Compensating Control?
Compensating Control is an alternative security or process measure put in place when a primary control cannot be implemented as required. It is used to reduce the same risk the primary control was meant to address, to an acceptable level.
What it is
A compensating control is a substitute measure that satisfies a security or compliance requirement when the standard control is not feasible. Frameworks such as PCI DSS, HIPAA, and ISO 27001 formally recognize compensating controls as valid alternatives, provided they meet specific criteria.
A compensating control must:
- Address the same risk as the original control
- Provide an equivalent or greater level of protection
- Be documented with a clear rationale for why the primary control cannot be applied
- Be reviewed and approved by an auditor or risk owner
Examples include:
- Applying network segmentation when a legacy system cannot be patched
- Requiring manual approval workflows when automated access controls are not supported by an older application
- Increasing audit log review frequency when a system cannot enforce session timeouts
Why it matters
Organizations rarely operate in a perfect environment. Legacy systems, vendor constraints, budget limits, and operational dependencies all create situations where the ideal control is not practical. A compensating control lets a team remain compliant and manage risk without halting business operations.
Without a formal compensating control process, teams either accept undocumented risk or fail audits. Documenting compensating controls also creates a clear record that drives remediation planning over time.
How tools address it
GRC platforms and compliance management tools provide structured workflows for documenting, approving, and tracking compensating controls. They link each compensating control to the specific requirement it replaces, the risk it addresses, and the owner responsible for it. Continuous controls monitoring tools can test whether a compensating control is still operating as intended. IT risk management and risk assessment tools help quantify whether the compensating control actually reduces risk to an acceptable threshold.