Illuminated industrial refinery and storage tanks at night
OT/ICS cybersecurity · Functional safetyBELGIUM / EUROPE / MIDDLE EAST

In OT and Critical
Infrastructure,
Cybersecurity becomes
a Safety Function.

Protecting what keeps your plant running.
People, process and technology, from the first drawing to the last shift.

One accountable partner. Every stage of the lifecycle.
Grounded in industrial standardsIEC 62443IEC 61511ISO/IEC 27001ISASecure ACSSA

01 / Why OT-Knight

Cybersecurity and safety.
Joined up, on the ground.

Your plant should run with safety, security, reliability and productivity. We bring OT cybersecurity and functional safety together, with programmes that fit a control room, a turnaround schedule and a safety case.

Safety is the starting point

IEC 62443 meets IEC 61511 and ISA TR84.00.09. Cyber threats to your safety functions belong in the same conversation as process risk.

Governance that works in OT

IEC 62443 and ISO/IEC 27001 in one management system, built around the people who operate and maintain your assets.

Experience behind the advice

Certified competence and real plant-floor experience, with a seat on the ISASecure ACSSA Technical Committee.

80+

years of combined
OT experience in the field

6

lifecycle stages,
from FEED to renewal

6

service families,
one accountable partner

ML1–3

guidance along the
ACSSA certification roadmap

02 / Our services

From obligation
to secure operation.

Start with the challenge in front of you. Our six service families connect strategy, engineering and day-to-day operation.

A / Governance & compliance

One management system.
Every site, every obligation.

Unify IT and OT governance and build a compliance approach around the jurisdictions in which you operate.

A1 Unified Security Management System

IEC 62443 integrated with ISO/IEC 27001: a combined management system and Statement of Applicability, practical OT procedures, and readiness for ISO/IEC 27001 and ISASecure ACSSA.

A2 NIS2 and UK NIS / CSRB / NCSC CAF

Site and entity scoping, a group baseline mapped to national regimes, supervisor-ready evidence and incident reporting. Support includes, for example, Belgian CyFun® and the UK NCSC CAF. We adapt to your jurisdiction.

A3 Security lifecycle programme

A functional safety and cybersecurity management plan aligned with IEC 62443 and IEC 61511, including project gates, EPC handover, acceptance criteria, management of change and KPIs.

A4 ISASecure ACSSA certification

Guidance from ML1 to ML3: eligibility, scoping, zone partition, gap assessment, mock evaluation and support through certification.

A5 Supply-chain security

IEC 62443-2-4 requirements in tenders and contracts, vendor assessments, third-party registers and CRA conformity requirements for purchased products.

A6 EU Cyber Resilience Act

Support for manufacturers and integrators: product classification, conformity route, risk assessment, secure development, vulnerability handling and technical documentation.

Discuss your compliance priorities

B / Risk & priorities

One risk language.
From the board to the control room.

Make investment decisions with a clear view of consequence, maturity and the controls your plant needs.

B1 Risk management framework

ISO 31000, IEC 62443 and ISO/IEC 27005 brought together on your HSE risk matrix. Deliverables include risk criteria, methodology, a risk register and treatment workflow.

B2 IEC 62443-3-2 risk assessments

System under consideration, zones and conduits, high-level and detailed risk assessments, target security levels and a Cybersecurity Requirements Specification.

B3 Cyber–safety alignment

Assess cyber threats to SIS and safety functions, guided by IEC 61511 and ISA TR84.00.09. Feed findings into HAZOP, LOPA, BPCS/SIS interface decisions and the SRS.

B4 Gap assessments

Measure your position against IEC 62443, ISO/IEC 27001, NIS2, UK NIS, CRA or ACSSA criteria, with maturity scoring and a roadmap planned around your turnarounds.

Talk through your risk landscape

C / Engineering & assurance

Requirements made real.
Security made verifiable.

Turn your target security level into a design basis, manage delivery and collect the evidence that it works.

C1 Requirements & specifications

IEC 62443-3-3 requirements translated into technical specifications for segmentation, remote access and recovery, governing EPC and vendor delivery.

C2 OT Cybersecurity Management as a Service

A named lead for your OT cybersecurity function: objectives, project steering, tool selection, terms of reference, audit readiness and on-call advice.

C3 Gap-closing projects

Segmentation, the IT/OT secure interface, remote access, hardening, accounts, backup and monitoring. From scope and vendor selection to oversight and closure evidence.

C4 Assurance & verification

Security level verification, cyber FAT and SAT, OT assessments, penetration testing and audits, conducted with live plant conditions in mind. Test protocols, witnessed reports and a findings register.

Discuss your next project

D / Operational resilience

Secure every day.
Prepared for the difficult one.

Look beyond the documents to the way your site runs, responds and recovers.

D1 Operational posture assessment

Architecture, remote access, accounts, backups, removable media and daily practice. Receive a score per IEC 62443-2-1 SPE and IEC 62443-3-3 FR, top risks and a 90-day action plan.

D2 OT incident response

Response plans, scenario playbooks, escalation matrices and tabletop exercises, aligned with plant safety emergency response and regulatory reporting duties.

D3 Continuity & disaster recovery

OT business impact analysis, recovery time and recovery point objectives, restore procedures and tests, combining IEC 62443 availability requirements with continuity practice.

D4 OT monitoring, NDR, EDR & SOC

Define monitoring requirements, select providers and manage performance independently of any SOC vendor. Deliverables include a scope of work and KPI framework.

Strengthen your operational resilience

E / Training & competence

Build the competence
behind every control.

Practical learning for operators, engineers, contractors and management boards, grounded in real plant-floor experience.

E1 Certified ISA and PECB training

ISA/IEC 62443 courses IC32, IC33, IC34, IC37 and IC49, plus PECB NIS2, ISO/IEC 27001 and ISO 31000 courses. Delivered through our authorised training provider by our ISA Qualified Instructor and PECB Certified Trainer.

E2 Awareness & competence

Tailored sessions for operators, technicians, engineers, contractors and management boards, including NIS2 management-body training.

Explore the training portfolio

F / Functional safety

Safe by design. Safe in operation.

Aligned with the IEC 61511 safety lifecycle. We support operators and manufacturers from the first design to operation and renewal, with functional safety and OT cybersecurity in the same conversation.

F1 Functional Safety Management and lifecycle planning

We build and run the management system that keeps your SIS safe throughout its life, on an operating site or within a capital project: ready for assessment, with a clear handover into operation.

F2 Functional safety assessments

Independent FSAs at every lifecycle stage, from hazard and risk analysis and the SRS to commissioning, operation and modification, plus audits that check your procedures are followed.

F3 Safety requirements specification (SRS)

We write or review the SRS for each safety instrumented function: safe state, trip points, response times, SIL target, bypass and reset rules, and proof test requirements.

F4 SIL verification

PFD, hardware fault tolerance, architectural constraints and systematic capability checked against each SIL target: an independent calculation you can defend in an assessment.

F5 Operation & maintenance support

Proof test procedures and interval optimisation, demand and failure tracking, bypass management, and review of SIS modifications once the SIS is running.

F6 Certify your FSMS

We guide you in choosing the certification body and through the whole process. We have led an FSMS to exida certification, so we know the route first-hand.

F7 Awareness, training & coaching

Awareness sessions, tailored IEC 61511 training and coaching on your own projects, from the control room to the board.

Explore functional safety services

F / Functional safety

Functional safety, across the IEC 61511 lifecycle.

From management and assessments to SIL verification, proof testing and team competence. Seven services that connect safe design with safe operation.

One partner / The whole lifecycle

OT Cybersecurity
Management as a Service

From the first drawing
to the last shift.

With you all along the lifecycle. We accompany you as your OT cybersecurity function, from objectives and projects to audits.

  1. 01Concept
    & FEED
  2. 02Detailed
    design
  3. 03Build,
    FAT & SAT
  4. 04Commissioning
  5. 05Operations
    & maintenance
  6. 06Change
    & renewal

Your dedicated OT cybersecurity function

Alongside your team.
Accountable at every stage.

  • A named OT cybersecurity lead at your side
  • Core security objectives identified and tracked
  • Cybersecurity projects defined and steered
  • Gap-closing projects managed to closure
  • OT security tools selected with you
  • Terms of reference and tender specifications
  • Internal and external audits prepared
  • On-call answers to ad-hoc questions

Your OT cybersecurity function, alongside your team.Project steering · Tool selection · Gap closure · Audit readiness · On-call advice

Let’s discuss MaaS

03 / Training & competence

Knowledge that travels
back to the plant.

Build practical competence in OT cybersecurity, functional safety and the interface between them. Choose the training path that fits your team and your plant.

CS + FS

Cybersecurity & functional safety

T1 connects IEC 61511 and IEC 62443: safety and cybersecurity risk, requirements, governance and assurance in one lifecycle. A three-day course, with a one-day workshop option.

Explore CS + FS training
CS

OT cybersecurity

T2–T8 build OT cybersecurity competence from IEC 62443 foundations to governance, risk management, engineering, assurance and hands-on hardening. Practical programmes for operators, engineers, EPCs and integrators.

Explore cybersecurity training
FS

Functional safety

T9–T13 cover SIS awareness, the IEC 61511 lifecycle and SRS, SIL verification, SIS operation and functional safety management. From half-day awareness sessions to multi-day courses, with coaching on real projects.

Explore functional safety training

“Functional safety and cybersecurity aren’t analogous:
they literally meet inside the same controller.”

That is why every OT-Knight engagement treats cybersecurity as part of your safety case.

04 / Working with us

A clear path.
A practical next step.

A programme built around your plant and your priorities, with defined deliverables at every stage.

  1. 01

    Discover

    Your plant, obligations and priorities.

  2. 02

    Assess

    Risks, gaps and maturity, checked on site.

  3. 03

    Plan

    A prioritised roadmap that fits your turnarounds.

  4. 04

    Implement

    Specify, manage and close the gaps.

  5. 05

    Verify & sustain

    Test, audit, train and keep improving.

Built for critical operations

Critical infrastructureOil & gasPetrochemicalsRenewablesBESSPower generationTransmissionDistribution

Our team’s certified competence

Member of the ISASecure ACSSA Technical Committee

ISA/IEC 62443 Cybersecurity ExpertISASecure ACSSAISA Qualified InstructorPECB ISO/IEC 27001 Senior Lead ImplementerPECB ISO/IEC 27001 Senior Lead AuditorPECB NIS2 Senior Lead ImplementerPECB ISO 31000 Senior Lead Risk ManagerTÜV SÜD functional safety certificationRisknowlogy certification

Let’s get started

Let’s secure
your plant together.

Tell us about your plant, your obligations and your next project. We’ll come back with a clear scope and a practical first step.

information@ot-knight.com
Belgium · Europe & the Middle EastEnglish · Français · Español

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