Active Defense for Operational Technology
OT and ICS environments demand security that works without agents, without inline blocking, and without risking process safety. Nythrix delivers high-confidence detection through deception and passive monitoring — purpose-built for industrial networks.
The OT Challenge
Industrial control systems were built for reliability and safety, not cybersecurity. Conventional IT security tools create more risk than they mitigate when deployed into OT environments.
Availability Over Confidentiality
OT environments prioritize uptime and safety above all else. Traditional IT security models that block traffic or quarantine hosts can cause physical harm or production loss. Detection and response must never interfere with process control.
Legacy Protocols Without Authentication
Modbus, DNP3, BACnet, and EtherNet/IP were designed for reliability, not security. They lack encryption, authentication, and integrity checks. Attackers who reach the OT network can read and write to PLCs without credentials.
No Agents, No Patching
OT assets run proprietary firmware and real-time operating systems that cannot accept endpoint agents. Patching requires vendor approval and scheduled downtime measured in months. Security must work without modifying endpoints.
Nythrix for OT
Each product in the Nythrix platform addresses a specific OT security requirement without introducing operational risk.
ADE - Deception for OT
Deploy realistic PLC emulation (Siemens S7), HMI decoys, and safety canaries across OT network segments. Any interaction with these assets is a confirmed intrusion — zero false positives. Coverage across 41 ICS-specific MITRE ATT&CK techniques.
NetWatch - Passive Protocol Monitoring
Monitor Modbus, DNP3, EtherNet/IP, and BACnet traffic passively from a SPAN port or network tap. Establish protocol baselines, detect anomalous function codes, and identify unauthorized device communication — without injecting a single packet.
Multi-tor - OT Collector Deployment
Deploy isolated collectors within OT network segments using hardened edge nodes. Air-gap compatible architecture with outbound-only communication. Collectors operate independently during network partitions with local buffering and graceful degradation.
The Nythrix platform maps directly to IEC 62443 requirements for industrial automation and control system security. Deception assets provide network monitoring and intrusion detection (SR 3.2), passive protocol analysis supports network segmentation verification (SR 5.2), and safety canaries address security monitoring for safety-instrumented systems (SR 3.3). Deployment models support zone and conduit architecture with isolated collectors per security zone.
Every component of the Nythrix OT deployment is designed to be passive-only. NetWatch monitors traffic from a SPAN port or TAP — it never injects packets or modifies OT network traffic. ADE decoys sit on unused addresses and do not interact with production PLCs or HMIs. Safety canaries monitor for unauthorized changes to safety-instrumented systems without modifying safety logic. The platform will never take automated containment actions in OT zones without explicit human authorization.
Protect What Keeps the Lights On
See how Nythrix deploys into energy, manufacturing, and critical infrastructure environments without disrupting operations.