[OT_ICS] INDUSTRIAL_SEGMENTATION :: ACTIVE
[OT_ICS] OT_ASSET_INVENTORY :: 3847_DEVICES
[OT_ICS] SCADA_PROTOCOL_INSPECT :: MODBUS_DNP3
[OT_ICS] IT_OT_BOUNDARY_STATUS :: ENFORCED
[OT_ICS] PURDUE_MODEL_COMPLIANCE :: L2_L3_SEGMENTED
[OT_ICS] ICS_VULN_SCAN_MODE :: PASSIVE_ONLY
[OT_ICS] HISTORIAN_ACCESS_CONTROL :: REVIEWED
[OT_ICS] REMOTE_ACCESS_OT :: MFA_ENFORCED
[OT_ICS] ANOMALY_BASELINE_OT :: ESTABLISHED
[OT_ICS] FIRMWARE_VERSION_AUDIT :: 147_OUTDATED
[OT_ICS] INCIDENT_RESPONSE_OT :: PLAN_CURRENT
[OT_ICS] NERC_CIP_COMPLIANCE :: ASSESSED
[OT_ICS] OPERATIONAL_IMPACT_RISK :: LOW_PROCEDURE
[OT_ICS] THREAT_INTEL_OT_FEEDS :: 3_ACTIVE
[OT_ICS] INDUSTRIAL_SEGMENTATION :: ACTIVE
[OT_ICS] OT_ASSET_INVENTORY :: 3847_DEVICES
[OT_ICS] SCADA_PROTOCOL_INSPECT :: MODBUS_DNP3
[OT_ICS] IT_OT_BOUNDARY_STATUS :: ENFORCED
[OT_ICS] PURDUE_MODEL_COMPLIANCE :: L2_L3_SEGMENTED
[OT_ICS] ICS_VULN_SCAN_MODE :: PASSIVE_ONLY
[OT_ICS] HISTORIAN_ACCESS_CONTROL :: REVIEWED
[OT_ICS] REMOTE_ACCESS_OT :: MFA_ENFORCED
[OT_ICS] ANOMALY_BASELINE_OT :: ESTABLISHED
[OT_ICS] FIRMWARE_VERSION_AUDIT :: 147_OUTDATED
[OT_ICS] INCIDENT_RESPONSE_OT :: PLAN_CURRENT
[OT_ICS] NERC_CIP_COMPLIANCE :: ASSESSED
[OT_ICS] OPERATIONAL_IMPACT_RISK :: LOW_PROCEDURE
[OT_ICS] THREAT_INTEL_OT_FEEDS :: 3_ACTIVE
Emerging Tech Security · Domain 06 · Tier 3
OT and ICS Security
Purpose-built operational technology security for critical infrastructure — preserving uptime while delivering IEC 62443-aligned detection, segmentation, and asset visibility.
The Case for OT and ICS Security
Nation-state adversaries are deliberately targeting industrial control systems — and most OT environments have no security visibility whatsoever.
Increase in OT cyberattacks from 2020 to 2023 as IT/OT convergence expanded attacker access
[Dragos Year in Review 2023]
Of ICS/OT environments have direct connections to corporate IT networks — expanding the attack surface
[Claroty Global State of ICS Security 2023]
Average operational disruption cost per hour for a manufacturing facility during a cyber-induced downtime event
[Aberdeen Group OT Security Study 2023]
OT-Native Security vs. IT Security Tooling Applied to OT
The most dangerous error in OT security is applying IT security tooling to operational technology environments. Active vulnerability scanners crash PLCs. EDR agents consume CPU cycles that real-time control loops cannot spare. Patch management cycles assume maintenance windows that 24/7 operational environments do not have. IT-centric tools cannot interpret industrial protocols — Modbus, DNP3, Profinet — and therefore cannot detect protocol-level attacks on the systems that control physical processes.
Vyomerc's OT/ICS security programme is built from the ground up for operational environments. Passive OT-native monitoring provides complete asset visibility without disrupting control processes. Protocol-aware deep-packet inspection detects attacks at the industrial protocol level. IT/OT boundary segmentation enforces the Purdue model without introducing latency into control loops. Every procedure is designed with operational continuity as the primary constraint.
Vyomerc OT Security
IT Security Tooling on OT
Asset discovery method
Passive OT-native discovery — no active scanning that could disrupt control loops or crash PLCs
Active network scanning crashes or destabilises OT devices
Protocol visibility
Deep-packet inspection of Modbus, DNP3, Profinet, and EtherNet/IP at the protocol level
IT tools see traffic volume but cannot interpret industrial protocol commands
Operational impact
All procedures designed with uptime as the primary constraint; no maintenance window required for monitoring
Agents, scanners, and patches require maintenance windows that OT cannot accommodate
Threat detection
Anomaly detection trained on OT process baselines; detects commands and state changes outside operational norms
Generic SIEM rules cannot distinguish legitimate ICS commands from malicious ones
Operational Workflow
How the Engagement Executes.
[PHASE_01]
OT Asset Discovery & Inventory
Passive discovery of all OT/ICS assets — PLCs, RTUs, HMIs, historians, and network devices — without active scanning, producing a complete asset register with firmware versions and vulnerability mapping.
[PHASE_02]
IT/OT Segmentation
Purdue model segmentation design and implementation, isolating Level 2/3 OT networks from corporate IT with industrial DMZ architecture, one-way data diodes where appropriate, and MFA-enforced remote access.
[PHASE_03]
OT Threat Detection Deployment
Deployment of OT-native passive monitoring with protocol-aware DPI for Modbus, DNP3, and Profinet — establishing operational baselines and configuring anomaly detection tuned to your process environment.
[PHASE_04]
IEC 62443 Compliance & Reporting
IEC 62443 security level assessment, NERC CIP compliance gap analysis, OT incident response plan development, and quarterly OT security posture reporting for operational and executive stakeholders.
[PHASE_01]
OT Asset Discovery & Inventory
Passive discovery of all OT/ICS assets — PLCs, RTUs, HMIs, historians, and network devices — without active scanning, producing a complete asset register with firmware versions and vulnerability mapping.
[PHASE_02]
IT/OT Segmentation
Purdue model segmentation design and implementation, isolating Level 2/3 OT networks from corporate IT with industrial DMZ architecture, one-way data diodes where appropriate, and MFA-enforced remote access.
[PHASE_03]
OT Threat Detection Deployment
Deployment of OT-native passive monitoring with protocol-aware DPI for Modbus, DNP3, and Profinet — establishing operational baselines and configuring anomaly detection tuned to your process environment.
[PHASE_04]
IEC 62443 Compliance & Reporting
IEC 62443 security level assessment, NERC CIP compliance gap analysis, OT incident response plan development, and quarterly OT security posture reporting for operational and executive stakeholders.
Capability Matrix
Technical Specification & Deliverables.
Passive OT Asset Visibility
Passive OT-native network monitoring provides complete asset inventory and traffic visibility without active scanning — preserving control loop integrity and eliminating the primary risk of IT tools on OT networks.
Industrial Protocol Detection
Protocol-aware deep-packet inspection of Modbus, DNP3, Profinet, and EtherNet/IP detects command injection, unauthorised function codes, and protocol manipulation attacks invisible to IT security tools.
IEC 62443 & NERC CIP
IEC 62443 security level assessment and remediation programme with NERC CIP compliance gap analysis and Purdue model segmentation implementation for regulatory and standards alignment.
OT Security Engagement
Secure your operational technology without disrupting a single process.
We conduct a passive OT network assessment to establish your asset inventory and IT/OT boundary posture before scoping a full IEC 62443 programme.
[OT_ICS_RESTRICTED // TOPOLOGY_DATA_PROTECTED // IEC_62443_ALIGNED]