IT wants zero trust plant-wide; OT already has zone and conduit segmentation under IEC 62443. Here’s where those two models actually agree, where they collide, and how to write a joint policy that survives both audits.
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In an increasingly interconnected world, securing industrial control systems (ICS) has become a critical concern for manufacturing companies. One widely recognized approach to ICS security is the Purdue Model, also known as the Purdue Enterprise Reference Architecture. Developed by the Purdue University’s Center for Education and Research in Information Assurance and Security (CERIAS), this model provides a framework for organizing and securing control systems in manufacturing environments. Understanding the Purdue Model The Purdue Model is based on the concept of hierarchical levels, each responsible for specific functions and security controls…
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