Secure your OT environment and protect the systems that run critical operations
IEC 62443 is the international standard for Industrial Automation and Control Systems (IACS), covering the hardware, software, industrial networks, and control systems used to run critical processes. It provides a practical framework to strengthen security controls across an Operational Technology (OT) environment, helping manufacturing organisations protect critical systems, address evolving cyber threats, and evidence that compliance requirements are met.
IEC 62443 is widely adopted across Europe to create a consistent OT security approach, define responsibilities across the supply chain, and align security effort to real-world risk.
- International standard for OT cyber security practices
- Identifies and mitigates OT cyber security risks
- Uses Security Levels (SLs) to define required robustness for different risk scenarios
- Defines roles for asset owners, integrators, and suppliers to strengthen supply chain security
- Can map to ISO 27001 for consistency across IT and OT estates
- Format: OT discovery + risk review, IEC 62443 alignment plan, controls design + implementation support, evidence pack + readiness review
- Duration: typically 4-12 weeks (depends on number of sites, critical processes, and asset visibility)
- Audience: operations/engineering, OT managers, IT/security, maintenance, plant leadership, key suppliers/integrators
- Ideal for: manufacturers and OT-heavy organisations needing structured OT security, resilience, and auditable controls
- What's included: OT asset baseline, zone/conduit approach, security level targets, supplier responsibility model, roadmap, and evidence pack
IEC 62443
Common problems
“We don’t know what OT assets we have or what’s critical.”
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Recommended focus: OT asset baseline + criticality
You’ll get: an OT inventory and priorities for protection
“We can’t evidence OT security for auditors or customers.”
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Recommended focus: standards-aligned evidence pack
You’ll get: documented controls and proof of implementation
“IT security controls don’t fit the factory floor.”
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Recommended focus: OT-safe controls + operations alignment
You’ll get: practical safeguards that won’t break production
“Suppliers and integrators create risk, responsibilities are unclear.”
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Recommended focus: roles + supply chain security
You’ll get: defined responsibilities and stronger third-party controls
“We need to segment OT networks but don’t know where to start.”
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Recommended focus: zones & conduits + segmentation plan
You’ll get: a clear segmentation design and phased rollout
“We want ISO 27001 consistency across IT and OT.”
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Recommended focus: map IEC 62443 to ISO 27001
You’ll get: one joined-up approach across both estates
What this service includes
- OT scoping workshop (sites, processes, critical systems, suppliers, constraints)
- OT asset discovery and baseline (what exists, what’s critical, what’s exposed)
- Risk review and prioritised mitigation plan for OT realities (uptime, safety, legacy)
- IEC 62443-aligned approach to zones/conduits and security level targets
- Control design guidance across identity/access, remote access, hardening, monitoring, backup/restore, and incident response (OT-safe)
- Supplier/integrator role definition and minimum security expectations
- Evidence pack structure (policies, procedures, diagrams, control proof)
- Roadmap with quick wins + phased improvements (so operations can adopt without disruption)
- Optional mapping to ISO 27001 to keep IT/OT governance consistent
Ask for price
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