CI Fortify – Advice for isolating vital systems
CISA and ASD release guidance for critical infrastructure to isolate vital systems during crises.
Summary
CISA, the Australian Signals Directorate's ACSC, and the FBI have released joint guidance called 'CI Fortify' to help critical infrastructure organizations isolate vital operational technology and systems during disruptions. The advice focuses on identifying critical systems, mapping connections, and implementing effective separation points to enhance resilience and maintain essential services during cyber incidents or geopolitical crises.
Full text
EXTERNAL CI Fortify – Advice for isolating vital systems Publish DateJuly 28, 2026 Related topics: Critical Infrastructure Security and Resilience , Cybersecurity Best Practices CI Fortify – Advice for isolating vital systemsCISA and the Australian Signals Directorate’s Australian Cyber Security Centre (ASD’s ACSC), in collaboration with the Federal Bureau of Investigation and international partners, released joint guidance CI Fortify – Advice for isolating vital systems. 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. Tags Audience: Federal Government, Industry, State, Local, Tribal, and Territorial Government Language: English Topics: Critical Infrastructure Security and Resilience, Cybersecurity Best Practices Related Resources Jun 26, 2026 External Russian Intelligence Services Continue to Target Commercial Messaging Applications Jun 02, 2026 Fact Sheet, Publication CISA and Partners Urge Hardening Automatic Tank Gauge Systems May 12, 2026 External, Publication Software Bill of Materials for AI - Minimum Elements Apr 29, 2026 Publication Adapting Zero Trust Principles to Operational Technology