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Zero Trust for Critical Infrastructure: Securing the OT/ICS Backbone
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Delve into the essential and intricate application of Zero Trust (ZT) principles within Operational Technology (OT) and Industrial Control Systems (ICS) environments. This episode explores the unique challenges of securing critical infrastructure, where safety, reliability, and availability are primary objectives, and legacy systems, unique protocols, and often unencrypted communications present distinct complexities compared to traditional IT security models. We'll discuss how the increasing convergence of IT and OT, driven by digital transformation, is reshaping the threat landscape and exposing previously isolated systems. Learn about the tailored roadmap for implementing Zero Trust in these vital sectors, employing a systematic five-step process: defining Protect Surfaces, mapping operational flows, building a Zero Trust Architecture (ZTA), creating policies, and ongoing monitoring and maintenance. Discover how established frameworks like the ISA/IEC 62443 Zone and Conduit Model and the SANS Top 5 Critical Controls for OT/ICS integrate with and are fortified by a Zero Trust approach to enhance security and resilience in the face of evolving threats.
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