OTDefend

What OTDefend is

OTDefend provides passive monitoring, threat detection, vulnerability management, and response for industrial environments. Its network intrusion detection inspects more than 16 industrial protocols from a mirror or TAP port, and the company says it does not inject traffic. A dependency-free Windows agent runs from Windows XP through Windows 11 to collect host inventory and intrusion-detection events. Detection combines network IDS signatures, Sigma analytics, and YARA signatures; OTDefend states that its homepage lists 688 rules. A built-in threat-intelligence store accepts TAXII 2.1 and STIX 2.1 feeds and matches indicators against live traffic. Deployment options include an offline Docker bundle, a .deb sensor, and a bootable appliance ISO. Integrations include Splunk, IBM QRadar, CrowdStrike Falcon, Microsoft Defender, SentinelOne, ServiceNow, Jira, Fortinet FortiGate, Palo Alto Networks, and Check Point. The platform lists compliance reporting for IEC 62443, NERC CIP, and NIS2, with exportable PDF reports. Its security design includes per-tenant isolation, role-based access, an active/standby core, and one-way sensors for data-diode segments. Pricing is available on request; OTDefend offers a free personalized demo and consultation.