Palladium Dynamics is a trusted OT Cybersecurity & Industrial Network Security company,
helping manufacturers, utilities, and critical infrastructure operators across India, the UK, USA, Europe,
and Australia secure their industrial control systems against the growing threat of targeted cyberattacks,
ransomware propagation, and insider risk. Our OT security engineers assess, design, and deploy
protective controls directly around your existing PLC, SCADA, DCS, and HMI infrastructure without
requiring downtime or changes to live control system code.
We work with the platforms your operations team already uses: Fortinet FortiGate industrial firewalls,
Cisco IE switches, Siemens SCALANCE, Claroty, Nozomi Networks, and Dragos deploying OT/IT network
segmentation using the Purdue Model (ISA-95/IEC 62443) zone-conduit architecture,
OT-aware firewall rules, passive threat monitoring, and secure remote access to replace
insecure VPN connections to production floor assets.
Every engagement is backed by ISO 9001:2015 quality assurance and delivers a formal
IEC 62443 gap assessment report suitable for customer supply chain audits, cyber insurance submissions,
and regulatory compliance filings. Integrated with our
PLC, SCADA & HMI Engineering and
Advanced Analytics & AI Solutions teams
for full-lifecycle Industry 4.0 security delivery.
A structured, non-invasive OT and ICS cybersecurity risk assessment that discovers every PLC, HMI, SCADA server, historian, engineering workstation, and network device in your industrial environment using passive monitoring on network TAPs without touching live control system connections. We map actual OT/IT traffic flows, identify unauthorised connections between the corporate IT and OT networks, surface unpatched firmware, default credentials, open industrial protocol ports, and insecure remote access paths.
Design and deployment of OT/IT network segmentation using the ISA-95/IEC 62443 Purdue Model reference architecture the industry standard for separating corporate IT networks (Levels 4–5) from manufacturing operations networks (Levels 0–3) using controlled data transfer points, industrial DMZs, and zone-conduit security models. We design segmentation architectures that permit legitimate data flows (historian replication to cloud analytics, MES integration with ERP, remote diagnostics by OEM vendors) while blocking lateral movement paths that ransomware and targeted attacks exploit.
Physical and logical deployment of industrial firewalls and industrial DMZ infrastructure using Fortinet FortiGate (with OT-protocol-aware inspection for Modbus TCP, EtherNet/IP, and OPC), Cisco IE industrial switches, Palo Alto Networks Next-Generation Firewalls, and Siemens SCALANCE SC-600 industrial security modules. Industrial DMZ design includes a dedicated historian replication server, file transfer gateway, and remote access jump server isolating the OT network from direct corporate IT access while preserving necessary data connectivity.
IEC 62443 compliance gap assessments comparing your current OT security posture against the requirements of IEC 62443-2-1 (Security Management System for IACS Operators) and IEC 62443-3-3 (System Security Requirements and Security Levels). The gap report documents compliant controls, partial controls, and missing controls against every requirement category asset management, access control, data confidentiality, system integrity, resource availability, and incident response.
Deployment of passive OT threat detection and continuous security monitoring with Claroty, Nozomi Networks, and Dragos platforms, implemented via network TAPs or SPAN ports with zero impact on live control systems. Enables real-time OT asset inventory, protocol-level traffic analysis, anomaly detection, and identification of ICS-specific threats such as Industroyer, TRITON, and EKANS, with seamless integration into Microsoft Sentinel or FortiSIEM for centralized monitoring and response.
Design and deployment of secure remote access solutions for industrial control systems, replacing legacy VPNs, shared RDP, and TeamViewer-based access. We implement OT-specific platforms such as Fortinet ZTNA, Claroty Secure Remote Access, and BeyondTrust PRA, enabling role-based access control, MFA, session recording, and time-bound approvals for secure PLC, HMI, and SCADA access.
Tell us about your OT environment — our lead OT security engineer will respond within 24 business hours.
Industrial Firewalls
Fortinet FortiGate OT
Siemens SCALANCE SC
Network Switches
Cisco IE Series
Hirschmann, Moxa
OT Threat Detection
Claroty Platform
Nozomi, Dragos
SIEM Integration
Microsoft Sentinel
Fortinet FortiSIEM
Secure Remote Access
Claroty SRA
Fortinet ZTNA
SCADA/PLC Protocols
Modbus, OPC-UA
EtherNet/IP, DNP3
Compliance Standard
IEC 62443-2-1
IEC 62443-3-3
Quality
ISO 9001:2015
Audit-Ready Reports
From a single OT risk assessment to a full plant-wide OT/IT segmentation and continuous monitoring programme our OT Cybersecurity team deploys every layer of industrial network protection on your existing PLC, SCADA, and DCS infrastructure, without disrupting a single production shift during rollout.
Passive asset discovery across all PLCs, HMIs, SCADA servers, and historians. Traffic flow mapping against Purdue Model. Vulnerability identification unpatched firmware, default credentials, open ports, insecure remote access. Written risk register with operational impact scoring and phased remediation roadmap.
Full IEC 62443 zone-conduit segmentation design separating corporate IT (Levels 4–5) from plant operations (Levels 0–3) using industrial DMZ, controlled data transfer points, and OT-protocol-aware firewall rules. Documented data flow matrix and VLAN scheme for independent IT team maintenance.
Physical and logical deployment of Fortinet FortiGate OT firewalls, Cisco IE industrial switches, and Siemens SCALANCE SC-600 modules with OT-protocol deep packet inspection for Modbus TCP, EtherNet/IP, and OPC. Industrial DMZ with historian replication server, file transfer gateway, and remote access jump server.
Structured gap assessment against IEC 62443-2-1 (Security Management) and IEC 62443-3-3 (System Security Requirements) producing an audit-ready compliance report. Accepted for automotive OEM supply chain audits, pharmaceutical regulatory submissions, UK NIS2 compliance, and industrial cyber insurance underwriting requirements.
Passive OT network monitoring using Claroty, Nozomi Networks, or Dragos deployed on TAPs or SPAN ports with zero impact on live plant operations. Continuous asset inventory, traffic baselining, and ICS-specific threat detection. Alert routing to OT SOC, IT SOC, or SIEM integration with Microsoft Sentinel or Fortinet FortiSIEM.
OT-specific secure remote access replacing legacy VPN and shared RDP with role-based, session-recorded, MFA-enforced access. Deployed using Claroty Secure Remote Access or Fortinet ZTNA each vendor and OEM technician restricted to only their authorised assets, with plant manager approval workflow for time-limited access grants.
A structured, non-disruptive delivery process from passive asset discovery to go-live OT monitoring with a single point of contact throughout the engagement and a formal IEC 62443 gap report at close.
We deploy passive monitoring on OT network TAPs no agents, no active scanning, no risk to live control systems to discover every PLC, HMI, SCADA server, historian, engineering workstation, and network device in your industrial environment. We map all OT/IT traffic flows, document flat network segments, unauthorised IT-to-OT connections, and remote access paths not captured in your existing network diagrams. The output is a complete OT asset inventory and a current-state network architecture diagram for your records.
Based on the asset inventory and network map, we conduct a structured cybersecurity risk assessment identifying unpatched firmware, end-of-life software, default credentials, open industrial protocol ports, insecure remote access configurations, and missing security controls. Each finding is scored by operational impact (production stoppage, safety incident, data breach) and likelihood of exploitation. The IEC 62443-2-1 and IEC 62443-3-3 gap analysis compares your current controls against standard requirements producing an audit-ready compliance report within 10 business days of the data collection phase.
We produce a target-state Purdue Model network segmentation architecture including industrial DMZ design, zone-conduit model, VLAN scheme, firewall rule sets, and a data flow matrix for all IT-OT integration points (historian replication, MES-ERP integration, OEM remote access). The architecture is reviewed and approved by both the plant operations team and IT security team before any hardware is procured or deployed. We present a phased implementation plan with prioritised quick wins (segmentation of high-risk flat network connections) and medium-term hardening actions.
Physical installation and configuration of industrial firewalls, industrial switches, and DMZ infrastructure according to the approved architecture. All firewall rules are tested against the documented data flow matrix in a staged rollout network segments are added to the segmented architecture one zone at a time, with production team sign-off at each stage before the next zone is onboarded. Secure remote access platforms are deployed and configured for each vendor, OEM technician, and remote maintenance engineer legacy VPN and direct RDP access is disabled only after the secure replacement is confirmed working by every affected party.
Passive OT monitoring sensors are deployed and connected to the monitoring platform (Claroty, Nozomi, or Dragos). Over the first 2–4 weeks of live monitoring, the platform builds a baseline of normal OT communication patterns for your environment. Alert thresholds are tuned to minimise false positives specific to your control system communication patterns. The monitoring output is integrated with your IT SOC or SIEM platform with OT-specific playbooks for first responders who may not have OT security expertise.
We conduct an OT-specific incident response tabletop exercise with your plant operations, IT security, and management teams walking through ransomware propagation, PLC firmware manipulation, and historian compromise scenarios to test your response procedures and identify gaps. A written OT Security Incident Response Plan (SIRP) is produced, tailored to your production environment and escalation contacts. Full knowledge transfer of all deployed configurations, monitoring dashboards, and firewall rule sets is provided to your IT and OT teams with documented runbooks for routine operations and incident response.
Real project outcomes from real clients. These results reflect measurable security improvements from Palladium Dynamics OT cybersecurity and industrial network security engagements not industry benchmarks or vendor marketing claims.
Auto components manufacturer · 3 plants · 68 PLCs · Siemens S7 network · customer OEM audit deadline
CHALLENGE
A Pune-based Tier 1 automotive components manufacturer received a supply chain cybersecurity questionnaire from a European OEM customer requiring evidence of IEC 62443-aligned OT security controls within 90 days. Their 3 plants had 68 Siemens S7 PLCs on flat Ethernet networks with direct connections to the corporate IT network no OT/IT boundary, shared Windows credentials between office PCs and SCADA workstations, and 14 active TeamViewer sessions running on production floor HMIs for vendor remote access. A ransomware incident on a peer supplier 6 months earlier had already reached their board's attention.
SOLUTION
Palladium Dynamics conducted a passive OT asset discovery across all 3 plants, producing a complete asset inventory of 68 PLCs, 14 HMIs, 3 SCADA servers, 2 historians, and 22 engineering workstations most of which the IT team had no visibility into. We designed a Purdue Model-compliant OT/IT segmentation architecture with a Fortinet FortiGate industrial DMZ separating all 3 plants from the corporate network. TeamViewer was disabled across all 68 HMIs and replaced with Claroty Secure Remote Access with MFA and session recording. The IEC 62443-2-1 and 3-3 gap report was delivered in audit-ready format within 8 weeks.
OUTCOMES Post Deployment
UK food manufacturer · Ignition SCADA historian · flat network · near-miss ransomware incident
CHALLENGE
A West Midlands food manufacturer experienced a ransomware incident that encrypted 140 corporate IT endpoints and propagated to their Ignition SCADA historian server before being stopped manually causing 11 hours of production data loss and 4 hours of production stoppage. A forensic investigation confirmed the attack entered through a phishing email on a corporate laptop and traversed a flat network connection directly to the SCADA server with no firewall between IT and OT. Their cyber insurer required documented OT/IT segmentation controls before renewing coverage.
SOLUTION
Palladium Dynamics deployed passive OT monitoring via Nozomi Networks Guardian within 48 hours of engagement to establish a full asset inventory and identify all remaining IT-to-OT exposure paths. A Fortinet FortiGate OT network segmentation design was delivered within 2 weeks, with a staged deployment over 4 weekends each segment onboarded during a planned shift changeover to eliminate production risk. A Fortinet ZTNA secure remote access solution replaced the 3 legacy VPN connections used by maintenance contractors. Microsoft Sentinel was integrated with OT-specific detection rules sourced from the Nozomi platform.
OUTCOMES Post Deployment
Feedback from IT/OT security managers, plant managers, and operations directors who have deployed Palladium Dynamics OT cybersecurity and industrial network security programmes on their production floors.
"Palladium Dynamics conducted a full OT security assessment across our 3 Pune plants. They mapped every PLC, HMI, and SCADA connection we had — most of which our IT team had no visibility into. The segmentation design they delivered was practical and our operations team could actually implement it without shutting down a single line. The IEC 62443 gap report passed our OEM customer's supply chain audit on the first submission."
Amit Kulkarni
IT/OT Security Manager · Automotive Tier 1, Pune 🇮🇳
"We brought Palladium Dynamics in after a near-miss ransomware incident that reached our Ignition SCADA historian. Within 6 weeks they had a full OT/IT network segmentation design in place using Fortinet firewalls and a proper industrial DMZ. The secure remote access solution replaced our legacy VPN for all maintenance contractors. No production disruption during the entire rollout — our cyber insurer accepted the controls and renewed our coverage."
James Hartley
Head of IT · Food Manufacturer, West Midlands, UK 🇬🇧
"We engaged Palladium Dynamics to deploy Nozomi Networks passive monitoring across our pharmaceutical plant network in Nashik. The platform discovered 34 assets we had no record of — including 6 legacy HMIs running Windows XP on the production floor. The visibility we now have into our OT network is transformative for our GMP compliance programme and our internal audit team was genuinely impressed."
Ravindra Shinde
Head of IT Infrastructure · Pharmaceutical Manufacturer, Nashik 🇮🇳
Every OT Cybersecurity & Industrial Network Security engagement from Palladium Dynamics is built on the specific industrial security platforms and compliance frameworks your facility, your customer auditors, and your cyber insurer require not a proprietary toolset that creates vendor dependency after project close.
Industrial Firewall & ZTNA
OT Asset Discovery & SRA
Passive OT Monitoring
ICS Threat Intelligence
OT Security Architecture
Quality Management
Our OT Cybersecurity team delivers industry-specific ICS/SCADA security assessments, OT/IT network segmentation, IEC 62443 compliance, and industrial threat monitoring across every major production sector for plants in India, the UK, USA, Europe, and Australia.
OT/IT network segmentation for press shop, body shop, and powertrain assembly networks. IEC 62443 gap assessments for OEM customer supply chain security audits (TISAX, VDA ISA). Passive OT monitoring on CNC machining, robotic welding, and assembly line PLC networks. Secure remote access for robot OEM service engineers for Tier 1 and Tier 2 suppliers across Pune, Chennai, and global plants.
GMP-compliant OT security programmes with 21 CFR Part 11 and EU Annex 11 alignment. Passive monitoring on batch manufacturing, packaging, and HVAC/BMS control networks. IEC 62443 gap assessments for FDA inspection readiness and EU GMP regulatory compliance. Secure remote access for SCADA vendor engineers for API, solid dosage, and biotech facilities across India and globally.
OT/IT network segmentation for filling, packaging, and CIP process networks. Ransomware propagation prevention between corporate IT and SCADA historian networks. Passive monitoring for anomaly detection on process control networks. Cyber insurance compliance documentation for food and beverage plants in India, the UK, and Australia.
SCADA security and OT/IT segmentation for water treatment, distribution, and power generation control networks. UK NIS2 Directive and India NCIIPC critical infrastructure security compliance. Passive OT monitoring on DNP3 and Modbus RTU networks. IEC 62443 gap assessments for regulatory reporting for water utilities and power infrastructure in India, UK, and the Middle East.
DCS and Safety Instrumented System (SIS) security assessments for process plants, refineries, and upstream facilities. OT/IT segmentation for control room networks with HART, Profibus, and Foundation Fieldbus device visibility. Dragos-based OT threat detection for ICS-specific attack patterns for chemical plants and oil & gas facilities in India and the Middle East.
OT/IT network segmentation for PCB assembly, SMT line, and test equipment control networks. Secure remote access for pick-and-place OEM service engineers and reflow oven vendors. IEC 62443 compliance assessments for electronics manufacturers supplying into automotive and aerospace supply chains for electronics manufacturers and machine OEMs in India and Europe.
Our OT Cybersecurity team is ready to conduct a passive asset discovery, scope your IEC 62443 gap assessment, and design your OT/IT network segmentation delivering your first measurable security improvement within 8–12 weeks, without a single production stoppage.
Honest answers to the questions plant managers, IT security teams, and operations directors ask before starting an OT security engagement
OT (Operational Technology) cybersecurity protects the industrial control systems, PLCs, SCADA, DCS, HMIs, and field devices that operate physical manufacturing processes and critical infrastructure. The core differences from IT security are:
OT security controls are therefore designed around the specific constraints of industrial environments: passive monitoring (no active scanning that could cause PLC faults), non-disruptive segmentation, and OT-aware firewall rules that understand industrial protocols.
A Palladium Dynamics OT/ICS cybersecurity risk assessment includes the following phases and deliverables:
All assessment activities are passive — no active network scanning, no agents deployed on PLCs or HMIs, and no modification of any live control system configuration. Zero production disruption is our minimum standard.
OT/IT network segmentation is the architectural separation of corporate IT networks from industrial control system (OT) networks using industrial firewalls, industrial DMZs, and controlled data transfer points — designed using the Purdue Model (ISA-95/IEC 62443) zone-conduit reference architecture.
| Purdue Level | Zone Name | Assets at This Level |
|---|---|---|
| Level 5 | Enterprise Network | Corporate IT, ERP, Email, Internet |
| Level 4 | Site Business Network | Plant IT, MES, Historian replication targets |
| DMZ | Industrial DMZ | Data transfer servers, remote access jump hosts — the controlled boundary |
| Level 3 | Operations Network | SCADA, MES, Historians, Engineering Workstations |
| Level 2 | Supervisory Control | HMIs, Operator Workstations |
| Level 1 | Control Network | PLCs, DCS Controllers, RTUs |
| Level 0 | Field Network | Sensors, Actuators, Drives, Field Instruments |
Without segmentation, ransomware entering on a Level 5 corporate laptop can propagate directly to Level 3 SCADA servers. With proper Purdue Model segmentation, the industrial DMZ acts as a controlled chokepoint — all IT-to-OT data flows must pass through the DMZ with documented firewall rules, making lateral movement from IT to OT architecturally impossible for common attack patterns. Palladium Dynamics designs and deploys this segmentation using Fortinet FortiGate, Cisco IE, and Siemens SCALANCE hardware with zero production disruption during rollout.
IEC 62443 is the international standard series for cybersecurity in Industrial Automation and Control Systems (IACS). The key parts most relevant to manufacturers are:
Your facility likely needs IEC 62443 compliance if any of the following apply:
Palladium Dynamics delivers IEC 62443 gap reports in audit-ready format, accepted on first submission by OEM customers, regulatory bodies, and insurance underwriters.
| Platform | Best For | Key Capability |
|---|---|---|
| Claroty Platform | Manufacturing, Pharma, Food & Beverage | Deep OT protocol inspection + Secure Remote Access in one platform |
| Nozomi Networks Guardian | Manufacturing, Utilities, Oil & Gas | Best-in-class passive asset discovery + anomaly detection accuracy |
| Dragos Platform | Process Industries, Critical Infrastructure | ICS-specific threat intelligence + known adversary group detection playbooks |
All three platforms are deployed as passive listeners on OT network TAPs or SPAN ports — they cannot generate traffic, cannot modify PLC communications, and cannot affect live plant operations under any failure scenario. Palladium Dynamics recommends the most appropriate platform based on your industry, existing security stack, and IT SOC integration requirements.
For clients who want a unified IT/OT security monitoring platform, we integrate OT monitoring alerts into Microsoft Sentinel or Fortinet FortiSIEM with OT-specific detection rules and playbooks that allow IT SOC analysts without OT expertise to triage and escalate OT security events appropriately.
