We protect SCADA, PLC, and DCS systems against cyber threats; we sharpen the IT/OT boundary and add security layers without endangering production continuity.
The critical topics this service addresses and the outcome we deliver in each.
We apply all changes within planned maintenance windows and improve security without affecting production using passive monitoring tools.
Through passive network discovery we inventory SCADA, PLC, DCS, HMI and RTU assets and produce a risk map.
With a Purdue-model-referenced IT-OT DMZ design we establish controlled and secure data flow at the boundary.
Through maturity assessment and gap analysis we produce a compliance roadmap aligned with IEC 62443 and leave the formal audit and approval to an accredited third party.
How we phase the service across delivery, governance, and connected service pillars.
Discovery and inventory: with passive network listening (SPAN/TAP) and asset profiling we inventory OT assets and build a risk map.
Segmentation: we design a Purdue-model Level 0-5 referenced IT-OT DMZ and OT-specific access control.
Monitoring and compliance: we set up threat monitoring with OT IDS/IPS and behavioural anomaly detection and produce a compliance roadmap with IEC 62443 gap analysis.
Illustrative surfaces where this service is commonly activated.
Facilities wanting to protect legacy PLC and SCADA systems that cannot be patched directly through segmentation and anomaly detection.
Manufacturing organisations wanting controlled data flow and a clear security boundary between IT and OT networks.
Critical-infrastructure operators wanting maturity assessment and gap analysis for compliance with standards such as IEC 62443.
This service's depth on sector-specific technical and compliance topics.
With passive network listening and asset profiling we inventory SCADA, PLC, DCS, HMI, historian and RTU assets without affecting production.
We structure the IT-OT boundary with a Purdue-model Level 0-5 referenced industrial DMZ and OT-specific firewall.
With tools such as Nozomi Networks, Claroty or Dragos we provide anomaly detection suited to Modbus, OPC-UA, S7 and DNP3 protocols.
Critical infrastructure operators face a converging threat landscape where IT-side compromises increasingly pivot into operational technology networks, threatening physical processes, safety systems, and continuous operations. Legacy OT environments were designed for reliability and availability, not cybersecurity, leaving SCADA systems, PLCs, and HMIs exposed to modern threat actor techniques. Our OT/ICS Industrial Security practice provides visibility, segmentation, and monitoring capabilities that protect operational technology without compromising the reliability requirements that production environments demand.
Shorten operational cycle time against agreed measurement targets and acceptance criteria
Improve quality indicators through baselines, acceptance criteria, and reviewed evidence
Turn the outcome into a measurable target with baseline, owner, and evidence review cadence
Our OT/ICS security engagement covers the full programme from initial risk assessment and asset inventory through to segmentation architecture, monitoring deployment, incident response planning, and operator training. We work alongside your engineering and operations teams to ensure security controls are appropriate for your specific industrial processes and do not introduce operational risk. The scope includes both legacy SCADA environments and modern IIoT deployments.
Satisfy NIS2 and NERC CIP compliance obligations with documented OT security programme evidence
Make risk and response indicators visible through measured controls, rehearsed playbooks, and evidence review
Enable OT-aware incident response with documented playbooks reducing OT MTTC from days to hours
OT/ICS security deliverables are engineered for the unique audience of industrial cybersecurity: they must serve both cybersecurity professionals and operational engineering teams who may have limited security background. Documentation is written in process-aware language, and all recommended controls are evaluated for operational feasibility before inclusion in deliverables.
Meet NIS2 Article 21 and NERC CIP audit requirements with complete IEC 62443-aligned documentation
Make risk and response indicators visible through measured controls, rehearsed playbooks, and evidence review
Obtain cyber insurance coverage for OT assets with documented security programme evidence
Yes. OT security is specifically designed around the principle of passive, non-intrusive monitoring. Asset discovery and threat detection tools operate by analysing network traffic using a tap or SPAN port without sending any probes or packets into the OT network. This eliminates any risk of disrupting PLCs, RTUs, or safety systems that may be sensitive to unexpected network traffic.
OT patch management requires a fundamentally different approach to IT. We implement a compensating controls strategy where systems that cannot be patched are protected through network segmentation, application whitelisting, and enhanced monitoring. Patches are validated in an offline test environment that mirrors the production OT configuration before a scheduled maintenance window deployment, minimising patch-induced process disruptions.
We implement an OT-specific privileged access management solution that provides time-limited, session-recorded remote access through a secure gateway. Vendor connections are restricted to specific assets and protocols by policy, session recordings are retained for forensic purposes, and all access requires multi-factor authentication and approval from an OT security administrator before the session is established.
Legacy PLCs and other agent-hostile devices are secured through the network layer rather than the device itself. We implement network microsegmentation to restrict communication to authorised protocol and address pairs, deploy passive anomaly detection to identify deviations from normal communication patterns, and use application whitelisting at the network layer to block unauthorised commands or firmware updates.
We maintain separate documentation repositories for OT and IT security programmes, aligned to the distinct regulatory frameworks applicable to each domain. OT documentation follows IEC 62443 structure, while IT documentation follows ISO 27001. A cross-reference index is maintained to identify shared controls and avoid duplication while preserving the independence required by each framework.
Yes. We design OT incident response as an annex to the corporate IRP, using the same escalation structure and severity taxonomy but with OT-specific decision points and containment procedures. The integration ensures that when an OT incident is declared, the corporate IR team activates standard crisis communications and business continuity procedures while OT specialists manage the technical response independently.
This short form routes your request to the right support team. We clarify context first, then define the safe sharing method.
Privacy-aware first contact; safe sharing flow when needed; no sales pressure.
