Industrial cybersecurity

IEC 62443 Consulting for Industrial Automation

We help manufacturers of industrial controllers, automation components and OT-connected embedded products apply ISA/IEC 62443 in product development. The work defines the applicable parts and target security level, evaluates development practice against IEC 62443-4-1 and product capabilities against IEC 62443-4-2, and prepares the evidence an independent assessment needs, producing a prioritized gap register and implementation plan.

Illustrative workflow ScopeRiskRequirementsEvidence
Scope
Agree the product, versions, interfaces and the parts of the series that apply.
Risk
Assess threats and consequences to set the target security level.
Requirements
Map IEC 62443-4-1 practices and IEC 62443-4-2 requirements to the design.
Evidence
Verify the implementation and record traceable results for assessment.

Scope

  • Scope and target security level definition

  • Gap assessment against IEC 62443-4-1 and 4-2

  • Zones and conduits for system-level work

Starting information

Product description, intended deployment, interfaces, current development process records and any customer security requirements.

Applicable framework

The ISA/IEC 62443 series is the reference. Requirements are selected for the role performed, the object assessed and the agreed editions. Certification schemes, CRA and NIS2 obligations are assessed separately; IEC 62443 work is not presented as automatic regulatory conformity.

Product supplier

IEC 62443-4-1 for the secure development lifecycle and IEC 62443-4-2 for component requirements, evaluated against the capability level the product claims.

System integrator

IEC 62443-3-2 risk assessment with zones, conduits and target security levels, and IEC 62443-3-3 system requirements.

Cover of the PRAETORIO whitepaper IEC 62443 for Industrial Automation
Whitepaper

IEC 62443 for Industrial Automation

Engineering secure products and control systems

A practical engineering reference to the ISA/IEC 62443 series for industrial automation and control systems (IACS). It shows how responsibilities, risk assessment, security levels and lifecycle evidence connect, following an illustrative packaging line from a remote-maintenance risk through to handover.

What you will learn

  • How protection responsibilities divide between asset owners, integrators, product suppliers and service providers, and which parts of the series apply to each role.
  • How a system risk assessment under IEC 62443-3-2 turns process consequences into zones, conduits, target security levels and a cybersecurity requirements specification.
  • How to produce traceable evidence across secure development (IEC 62443-4-1), component capabilities (IEC 62443-4-2), verification, patching and recovery.

Intended audience

Automation manufacturers, machine builders and system integrators. Also relevant to asset owners and operators who specify, accept and maintain these systems.

Download whitepaper English-language documentPDF, 16 pages, 1.0 MB
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An engineering overview, not a substitute for the applicable standards or a conformance assessment.

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