Enhancing Critical Infrastructure Resilience: CISA's 'CI Fortify' Guidance
On July 28, 2026, the Cybersecurity and Infrastructure Security Agency (CISA), in collaboration with international partners, released the 'CI Fortify – Advice for Isolating Vital Systems' guidance. This document provides critical infrastructure organizations with practical steps to isolate essential operational technology (OT) and supporting systems from other networks during cyber incidents or periods of heightened threat. The guidance emphasizes identifying critical systems, mapping their connections, and implementing effective separation points to ensure continuity of essential services during disruptions. The release of this guidance underscores the increasing cyber threats targeting critical infrastructure sectors. State-sponsored actors and cybercriminals are increasingly focusing on these sectors to conduct espionage or prepare for disruptive cyber activities. Implementing the recommended isolation strategies is vital for organizations to enhance their resilience and maintain operational continuity in the face of evolving cyber threats.
Kill Chain









