This infographic explains how manufacturers can modernize traditional Purdue Model architectures using Zero Trust principles. As OT, IIoT, cloud, and AI systems become interconnected, traditional controls such as VPNs, flat networks, and implicit trust create security risks and increase the likelihood of operational disruptions. The guide highlights common weaknesses, including lateral movement, outdated IoT devices, vendor VPN access, and blind spots in industrial DMZs. A Zero Trust approach replaces network trust with identity-based access, microsegmentation, app-level connectivity, and monitored vendor sessions. Recommended actions include replacing VPNs, isolating IoT devices, enforcing time-bound remote access, and preventing east-west movement. Benefits include stronger protection fo

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