Cynalytica OT OptICS is a machine learning-based intrusion detection and monitoring system designed for serial-connected Industrial Control Systems (ICS). The platform monitors level 0/1 serial communications that control industrial physical processes, providing visibility into legacy cyber-physical systems. The system operates on the SerialGuard AnalytICS Platform and autonomously monitors serial network behavior to detect anomalies without requiring human-defined rulesets. It supports protocol-agnostic monitoring with deep packet inspection capabilities for RS-232/485/422 serial networks. OT OptICS baselines normal operations to identify deviations in serial network behavior and detect cyber-physical attacks and operational faults. The platform validates data integrity of serial-connected ICS and provides real-time monitoring with automated alerting capabilities. The system collects and analyzes serial data for operational health monitoring and can integrate alerts and metrics with third-party SIEM and SOC platforms for IT/OT event correlation. It aims to reduce Mean-Time-to-Detect and Mean-Time-to-Respond to cyber threats while improving situational awareness of legacy systems. Cynalytica offers OT OptICS as a Managed Service Platform with 24/7 monitoring, application hosting, system administration, network engineering support, and professional services including analytics, audits, compliance reporting, and troubleshooting.