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detecting-anomalies-in-industrial-control-systems

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Deploys anomaly detection for OT/ICS environments using machine learning on OT network baselines, physics-based process models, and Modbus/DNP3/OPC UA traffic analysis to flag deviations, rogue devices, and mismatches against historian data. Use for continuous OT monitoring, baselining deterministic SCADA polling, or investigating alerts from Nozomi Guardian/Dragos needing deeper protocol analysis.

When to use

• When deploying continuous monitoring for OT environments that lack intrusion detection
• When building behavior-based detection to complement signature-based IDS in OT networks
• When establishing baselines for deterministic SCADA communications to detect deviations
• When integrating machine learning anomaly detection with OT security monitoring platforms
• When investigating alerts from Nozomi Guardian or Dragos Platform that require deeper analysis

When not to use

• signature-based detection of known exploits
• IT network anomaly detection without OT protocols
• replacement for process safety systems (SIS)

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