OT / ICS Cybersecurity

What our OT/ICS security services cover

OT security requires a fundamentally different methodology from IT security. We perform passive, non-intrusive asset discovery using tools like Nozomi Networks, Claroty, and Dragos to map your OT environment without triggering process anomalies. Security assessments follow the IEC 62443 industrial cybersecurity standard and CERT-In's critical information infrastructure guidelines.

Network segmentation design separates your IT and OT networks using DMZ architectures, data diodes, and jump servers that preserve operational continuity while eliminating the direct pathways attackers use to pivot from corporate networks into PLCs and SCADA systems. We also design and deploy OT-specific monitoring using passive network taps to detect anomalous commands, unexpected device connections, and known ICS malware signatures.

• OT asset discovery & inventory — Passive, non-intrusive discovery of PLCs, RTUs, HMIs, historians, and SCADA components without process disruption.
• IEC 62443 security assessment — Structured security assessment of your OT environment against the IEC 62443 industrial cybersecurity standard.
• IT/OT network segmentation — Design and implementation of DMZ architectures, data diodes, and jump servers to isolate operational networks.
• OT threat monitoring — Passive network monitoring using Nozomi, Claroty, or Dragos to detect anomalies and known ICS attack signatures.
• Vulnerability management — Risk-based OT vulnerability assessment with vendor advisory correlation — patching without production risk.
• Incident response for OT — Specialised OT incident response that preserves process safety and operational continuity during cyber events.

Why choose eNeoteric for ot / ics cybersecurity

• Process-safe methodology — Our OT assessments use passive techniques that do not send packets to live control systems, eliminating production disruption risk.
• IEC 62443 expertise — Our OT security team is trained in IEC 62443 and NERC CIP frameworks applicable to Indian critical infrastructure.
• Sector experience — We have delivered OT security projects in manufacturing, pharmaceutical, power generation, water utilities, and oil & gas.
• Vendor partnerships — Technology partnerships with Nozomi Networks, Claroty, and Dragos for best-in-class OT visibility platforms.
• CERT-In CII alignment — Our engagements are aligned with CERT-In's Critical Information Infrastructure protection guidelines and reporting requirements.

Frequently asked questions

Why is OT/ICS security different from IT security?

IT systems prioritise confidentiality, integrity, and availability — in that order. OT systems invert this: availability and safety come first. An IT security tool that sends active probes can crash a PLC or trigger an emergency shutdown. OT security requires passive techniques, deep knowledge of industrial protocols (Modbus, DNP3, IEC 61850, PROFINET), and risk tolerance calibrated to process safety — not just data security.

What is IT/OT convergence and why does it increase risk?

IT/OT convergence refers to the growing interconnection between corporate IT networks and operational technology networks that control physical processes. While convergence enables remote monitoring, predictive maintenance, and efficiency gains, it also creates new attack paths — a phishing email on a corporate laptop can now become a pathway to a SCADA system that controls industrial machinery.

Can you assess our environment without disrupting production?

Yes. Our OT assessment methodology uses passive techniques — network tap-based traffic capture, configuration review, and document analysis — that do not interact with live control systems. We schedule any active testing (if required) during planned maintenance windows with your operations team supervising.

What regulations apply to OT/ICS security in India?

CERT-In designates certain OT environments as Critical Information Infrastructure (CII) under the IT Act 2000, imposing specific security and incident reporting requirements. The National Critical Information Infrastructure Protection Centre (NCIIPC) issues sector-specific guidelines for power, telecom, finance, and other critical sectors. We help organisations map their OT security programme to these requirements.