We are seeing a steady rise in cyberattacks against critical infrastructure and it’s not surprising. Many of these systems rely on legacy software riddled with known vulnerabilities. When these systems fail, the impact moves quickly from networks to operations, and from operations to public safety. There is still a dangerous misconception that operational technology (OT) The post Securing our Critical Infrastructure with Zero Trust appeared first on ColorTokens.

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Cyberattacks on critical infrastructure are rising, fueled by legacy systems and the false assumption that OT environments are safely air-gapped. Drawing on experience leading cybersecurity at the Department of the Interior, the author argues that Zero Trust principles must be applied to OT environments, with a focus on assuming breach, implementing microsegmentation to limit lateral movement, enforcing strong identity controls, and building containment into architecture rather than relying on patching alone. The piece also stresses that resilience is ecosystem-wide: securing only federal systems is insufficient when adversaries can achieve mission failure by targeting adjacent municipal or private infrastructure. Cross-sector collaboration and timely cyber intelligence sharing are presented as essential components of a unified national defense posture.