ASD issues guidance for OT network isolation

The Australian Signals Directorate (ASD) has released guidance for critical infrastructure operators to strengthen cyber resilience and prepare for cyber incidents, disruptions and other threats to essential services.

ASD says that as the cyberthreat environment continues to evolve, critical infrastructure organisations face increasing risks from cybercriminals, state-sponsored actors and emerging technologies. Building resilience is essential to protecting critical systems and maintaining the delivery of services that Australians rely on every day.

CI Fortify brings together practical guidance and recommendations to help organisations reduce cyber risk, strengthen security controls and improve preparedness for disruptive events. The resources support both technical and executive audiences, providing strategies to enhance security, support business continuity and improve organisational resilience.

The guide also explains how organisations can isolate critical operational technology (OT) and supporting systems from other networks for up to three months during cyber incidents or periods of increased cyberthreat. It provides practical guidance and strategic advice for OT owners, operators and cybersecurity teams. ASD says that by reviewing and applying this guidance, organisations can strengthen their ability to prepare for, respond to, and recover from cyber incidents.

The CI Fortify publications are available here.

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