How do I reduce my CMMC scope without breaking the business?
To reduce CMMC scope without business disruption, strategically segment your network and isolate systems processing Controlled Unclassified Information (CUI). Focus on identifying and protecting the precise boundaries of CUI flow, leveraging secure enclaves or cloud environments. This minimises the number of assets subject to CMMC controls, simplifying compliance and reducing implementation costs while maintaining operational continuity.
Effective scope reduction begins with a thorough data flow analysis to precisely identify where CUI is stored, processed, and transmitted. Organisations should map these flows to define a CUI boundary, then implement network segmentation to isolate these systems from the broader enterprise network. This creates a smaller, more manageable "enclave" subject to CMMC controls, significantly reducing the attack surface and the number of assets requiring stringent security measures, thereby streamlining the assessment process.
To achieve this without business disruption, careful planning and stakeholder engagement are paramount. Involve IT, operations, and business unit leaders early to understand critical dependencies and potential impacts of segmentation. Leverage existing capabilities such as virtual desktop infrastructure (VDI), secure cloud environments, or dedicated CUI enclaves to minimise changes to user workflows. Prioritise solutions that enhance security while integrating seamlessly with essential business processes, ensuring that compliance efforts do not impede productivity or operational efficiency.
Sources
- CMMC Model, Version 2.0, Level 2
- CMMC Scoping Guide, Version 2.0