Summary
This guidance contains practical steps for critical infrastructure (CI) organizations to isolate vital operational technology and enabling systems from all other networks in the event of disruption or crisis and operate in isolation for an extended period. Developed to address escalating cyber threats, the guidance outlines key steps for identifying critical systems, mapping connections, and implementing effective separation points. By following these recommendations, organizations can enhance their resilience, minimize disruption, and maintain essential services during cyber incidents or geopolitical crises.