Fortinet and Nozomi Networks combine Guardian with FortiGate, FortiNAC, FortiSIEM, and the Fortinet Security Fabric to protect industrial control systems and converged IT and OT environments. Guardian passively inspects industrial protocols, profiles devices with artificial intelligence, builds behavior baselines, and detects anomalies without disrupting production. Alerts can trigger FortiGate policies to block suspicious traffic, while FortiNAC improves asset profiling and access control. FortiSIEM correlates OT risk with IT events for centralized visibility, prioritized alerts, and automated response. A tiered Purdue-model architecture protects deeper industrial layers. The solution reduces blind spots, limits lateral movement, minimizes downtime and data loss, and improves operational

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