OT Infrastructure & Cybersecurity

We secure and strengthen your critical OT environments.

OT environments are at the core of industrial operations, but they are also among the most exposed to operational and cyber risks.

We help industrial organizations secure, modernize, and build resilient OT infrastructures—without compromising operational availability. From compliance audits to IT/OT converged infrastructure implementation and 24/7 managed services, we turn OT cybersecurity into a lever for operational reliability and performance.

OT Compliance Audits IT/OT Converged Infrastructures Managed OT Services and 24/7 Support

OT Compliance Audits

We assess the compliance and security posture of your OT environments to identify gaps, reduce operational risks, prioritize remediation efforts, and align industrial systems with recognized best practices.

Assessment of OT architecture and communication flows
Analysis of existing security controls (access management, network segmentation, patching, etc.)
Identification of gaps against standards and best practices (e.g. IEC 62443, ISO 27001, NIST)
Analysis of operational and cyber risks affecting industrial systems

You receive a clear, actionable report with prioritized technical and governance recommendations tailored to your operational reality.

An effective OT audit starts with a passive discovery phase: asset inventory (PLCs, HMIs, drives, IIoT devices), network flow mapping, and identification of industrial protocols (Modbus, OPC UA, Profinet, EtherNet/IP). This phase is performed without any impact on production, using passive network sensors or port mirroring (SPAN/TAP). It establishes the baseline required to assess gaps against applicable standards. Without a reliable asset inventory, any compliance analysis remains incomplete and creates critical blind spots.

It establishes the baseline needed to assess deviations from applicable standards. Without this reliable inventory, any conformity analysis remains incomplete, exposing critical blind spots.

The two primary frameworks used in industrial environments are IEC 62443—specifically designed for industrial control systems and structured around zones and conduits—and NIST SP 800‑82, the industrial cybersecurity guideline published by NIST and widely adopted in Canada. For critical infrastructure, the Canadian Centre for Cyber Security (CCCS) cybersecurity framework also applies. The audit identifies gaps against these frameworks and prioritizes corrective actions based on actual operational risk, not solely on theoretical severity levels.

For critical infrastructures, the CCCS (Canadian Centre for Cybersecurity) cybersecurity framework also applies. The audit identifies deviations from these frameworks and prioritizes corrective measures according to actual operational risk, not just severity.

Legacy equipment is one of the most frequent issues in IoT audits. The approach recommended by IEC 62443 is to isolate them in controlled-risk zones and document formal compensatory controls: application whitelisting, virtual patching (IDS/IPS in front of the PLC), reinforced network segmentation and continuous passive monitoring.

Legacy assets are one of the most common challenges in OT audits. IEC 62443 recommends isolating them within controlled-risk zones and formally documenting compensating controls, such as application whitelisting, virtual patching (IDS/IPS deployed in front of PLCs), enhanced network segmentation and continuous passive monitoring. The audit evaluates whether these compensating controls sufficiently justify keeping the assets in operation and produces a prioritized modernization roadmap. The goal is not to force immediate replacement, but to demonstrate that residual risk is controlled, documented, and defensible.

A rigorous OT compliance audit typically produces the following deliverables:
- Comprehensive asset inventory : a detailed list of detected assets, including firmware versions, industrial protocols, and support status.
- Network architecture and flow mapping : diagrams of IT, industrial DMZ, and OT network flows, with identification of critical dependencies.
- Gap analysis report : identification of non‑compliances against IEC 62443 and NIST SP 800‑82, with associated risk levels.
- Prioritized remediation plan : corrective actions ranked by operational impact and feasibility, including compensating controls for non‑patchable assets.
These deliverables form the foundation for OT governance, regulatory audits, and capital planning.

IT/OT Converged Infrastructure Design and Hardening

We design and optimize reliable, secure, and resilient IT/OT converged infrastructures to ensure operational continuity and performance across industrial environments.

Design and implementation of highly segmented IT/OT architectures aligned with the Purdue Model, with separated access management to isolate critical environments
Deployment of Privileged Access Management (PAM) solutions to secure and audit industrial privileged accounts
Integration of passive industrial network monitoring platforms (e.g. Nozomi, Armis) to provide full visibility into OT assets without agents or disruptive scanning
Integration of OT monitoring tools with IT security platforms such as SIEM solutions
Documentation and operational team training

Implementing the Purdue Model in an existing facility relies on a phased, non‑disruptive approach.

First, passive traffic analysis maps existing communications between layers (PLC, SCADA, HMI, MES, ERP) and documents critical operational dependencies. Next, segmentation is introduced gradually—starting with IT / industrial DMZ / OT separation, then refined by production line or cell. Finally, filtering rules are enabled progressively and tested in monitoring mode before enforcement.

This approach ensures each new security control is operationally validated before activation, eliminating the risk of blocking essential production flows.

Passive OT monitoring platforms analyze industrial network traffic through network sensors or SPAN/TAP ports, without sending any queries to devices. They automatically identify PLCs, HMIs, drives, sensors, and IIoT equipment by detecting firmware versions, software levels, and industrial protocols (Modbus, OPC UA, Profinet, EtherNet/IP). These platforms provide real‑time dashboards covering asset status, network communications, configuration deviations, and behavioral anomalies. Note: while asset discovery works with unmanaged switches, detailed flow mapping requires managed industrial switches that support port mirroring.

These solutions provide real-time dashboards on asset status, network flows, configuration deviations and behavioral anomalies. Please note: with unmanaged switches, inventory is still possible, but detailed mapping of flows between equipment requires managed industrial switches that can be configured with mirror ports.

In OT environments, shared accounts and permanent vendor access remain one of the most exploited attack vectors. A Privileged Access Management (PAM) solution centralizes authentication, records sessions, restricts privileges by time and scope, and automatically revokes access when no longer required.

In industrial settings, PAM is deployed through an OT access bastion located in the industrial DMZ, separate from IT PAM systems and adapted to industrial protocol constraints and availability requirements. According to IEC 62443 and NIST SP 800‑82, remote access—especially for integrators and contractors—must be temporary, traceable, and automatically revoked. PAM also provides the audit trail required for regulatory compliance.

Integrating OT data into a SIEM presents two key challenges: industrial protocol normalization and alert noise reduction.

Passive OT monitoring platforms (e.g. Nozomi, Dragos, Armis) act as an intermediate intelligence layer. They understand industrial operational context, filter out expected PLC behavior, and forward only qualified, enriched events to the SIEM. Integration is handled via standard connectors such as Syslog, CEF, or REST APIs.

This architecture allows OT teams to retain operational autonomy while giving IT and SOC teams a unified view of threats across IT and OT environments.

Managed services and 24/7 support

We understand the unique challenges of industrial environments and deliver turnkey managed services that maximize security, performance, and operational availability. Let us manage your OT technology so you can focus on what matters most: growing your business.

24/7 monitoring and support with clearly defined response time commitments
Regular patching and update management
Deployment of enhanced cybersecurity solutions and ongoing team training
Fast backup and recovery solutions
Development and management of IT policies with OPEX and CAPEX budget tracking
End-to-end procurement management, including equipment and software acquisition, installation, and configuration

Managed OT services are designed specifically for industrial constraints: continuous system availability, proprietary protocols, devices that cannot be rebooted casually, and extremely limited maintenance windows. Traditional IT support does not account for these realities.

In practice, OT managed services deliver response times aligned with industrial criticality, deep knowledge of OT protocols (Modbus, OPC UA, Profinet, EtherNet/IP), and hands‑on expertise with PLCs, HMIs, and SCADA systems—without disrupting production. The objective is to cover the entire IT/OT environment under a single service agreement, with unified visibility and clear accountability.

In OT environments, patching cannot follow standard IT cycles. Patches must be prioritized based on actual operational risk, tested in pre‑production environments, and deployed during carefully planned maintenance windows—often infrequent and short.

Within a managed service, this process is handled end‑to‑end: vulnerability monitoring for industrial assets, impact assessments prior to deployment, and compensating controls (virtual patching, enhanced segmentation) for assets that cannot be patched immediately. Operational teams are only involved to validate deployment windows, without having to manage the technical complexity.

In OT environments, critical data goes beyond files. It includes PLC configurations, control logic, HMI parameters, production recipes, and device firmware. An incomplete or incorrect restoration can lead to prolonged downtime or physical safety risks.

Managed OT services ensure regular, versioned backups of these configurations, scheduled restoration testing to validate recoverability, and recovery procedures aligned with each production line’s tolerance for downtime. The objective is clear: in the event of a hardware failure, cyber incident, or human error, recovery is fast, documented, and predictable.

Protect your critical industrial environments with our expertise in OT infrastructure and cybersecurity

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