Tenable OT Security

Tenable OT Security (formerly Indegy) is an industrial cybersecurity and operational technology (OT) security platform engineered to protect critical infrastructure, manufacturing facilities, and industrial control systems (ICS/SCADA) from cyber attacks, operational disruptions, and unauthorized configuration tampering. Combining deep packet inspection of proprietary industrial protocols with active, patented device queries, Tenable OT Security delivers comprehensive asset inventory, threat detection, and configuration control across complex cyber-physical environments without disrupting sensitive industrial processes.

The platform provides complete visibility into both the OT layer (PLCs, RTUs, DCS controllers) and the IT layer (engineering workstations, HMIs, industrial switches) within operational environments. Key capabilities include safe, proprietary active querying of industrial controllers to extract firmware versions, backplane configurations, and ladder logic code, passive network anomaly detection, automated snapshot comparisons that alert on unauthorized PLC logic changes, integrated IT vulnerability assessment powered by Nessus, and automated compliance mapping for NERC CIP and IEC 62443. By detecting unauthorized changes to controller ladder logic and firmware, Tenable OT Security prevents physical disruptions, production downtime, and industrial espionage.

Tenable OT Security integrates with Tenable One, Tenable Security Center, Rockwell Automation, Siemens, Schneider Electric, Splunk, and enterprise SIEM platforms. Common enterprise use cases include securing manufacturing assembly lines against ransomware, safeguarding electrical power grids and water treatment plants, maintaining an accurate inventory of industrial controllers, and detecting unauthorized vendor configuration changes on plant floors. Tenable OT Security provides deep OT visibility, proactive threat defense, and industrial operational resilience.