IEC 62443 Assessment Support
Turn industrial cybersecurity requirements into practical actions
The IEC 62443 series provides a framework for addressing cybersecurity across industrial automation and control systems. OTVista can support organizations in structuring assessments, mapping applicable requirements, identifying evidence, documenting gaps and organizing improvement activities.
- Sheet
- Service sheet
- Service
- IEC 62443 Assessment Support
- Scope areas
- 8
- Potential deliverables
- 6
- Engagement
- Scoped to you
In short
IEC 62443 is a series of international standards for the security of industrial automation and control systems (IACS). It addresses asset owners, system integrators and product suppliers, and introduces concepts such as zones and conduits, security levels and risk-based requirements.
The challenge
IEC 62443 is a large series with different parts written for different roles. Asset owners often struggle with where to start: which parts apply, how much of the series is relevant to an existing site, and how to turn requirements into tasks that engineering teams can act on.
Without that structure, programs either stall in document reviews or jump straight to technology purchases that do not address the actual gaps.
Scope and activities
Engagements typically focus on the parts most relevant to asset owners. We state exactly which parts and requirements are in scope during scoping.
Applicability and scope
Which systems form the system under consideration, and which parts of the series apply to your role.
Organizational security program
Review against IEC 62443-2-1 themes: governance, policies, roles, training and program management.
Service provider requirements
Where integrators or maintenance providers are involved, the expectations described in IEC 62443-2-4.
System-level risk assessment
Zone and conduit partitioning and risk assessment concepts described in IEC 62443-3-2.
Security requirements mapping
Mapping existing controls to system requirements in IEC 62443-3-3 and the targeted security level.
Assessment evidence
Defining what evidence demonstrates each requirement and where it is held.
Gap analysis
Documenting where controls are missing, partial or undocumented.
Remediation planning and readiness reporting
Prioritized actions and a readiness view for management or a future external assessment.
Potential deliverables
Final deliverables depend on the agreed engagement.
- Applicability statementParts, requirements and systems in scope, and why.
- Zone and conduit modelA documented partitioning of the system under consideration.
- Requirement mappingEach applicable requirement mapped to controls and evidence.
- Gap registerMissing or partial requirements with rationale.
- Remediation planPrioritized actions with owners and dependencies.
- Readiness summaryA management-level view of maturity and remaining work.
Engagement approach
Clarify
Confirm your role (asset owner, integrator or supplier), objectives and the systems in scope.
Model
Define zones, conduits and the system under consideration with your engineers.
Map
Map applicable requirements to existing controls and identify the evidence for each.
Assess
Record gaps, partial implementations and evidence weaknesses.
Plan
Prioritize remediation and summarize readiness for decision-makers.
Assumptions and limitations
- OTVista does not certify organizations, systems or products and does not guarantee compliance.
- Certification against IEC 62443 is carried out by accredited certification bodies.
- You are responsible for holding licensed copies of the standards you use; OTVista does not distribute standard text.
- Security level targets and risk tolerance decisions remain with the asset owner.
What helps us get started
- Architecture drawings and system descriptions
- Existing security policies and procedures
- Any previous risk assessments or audit results
- Access to licensed copies of the relevant IEC 62443 parts
Sensitive material is exchanged only after an engagement is agreed, using a method we agree with you — never through the website form.
Questions about IEC 62443 Assessment Support
What is IEC 62443?
IEC 62443 is a series of international standards for securing industrial automation and control systems. It defines requirements for asset owners, service providers and product suppliers, and introduces concepts such as zones, conduits and security levels.
Which IEC 62443 parts matter most to an asset owner?
Commonly IEC 62443-2-1 for the security program, IEC 62443-3-2 for risk assessment and zones and conduits, and IEC 62443-3-3 for system security requirements. IEC 62443-2-4 matters where service providers are involved.
Can OTVista certify us against IEC 62443?
No. OTVista provides consulting and assessment support to help you understand gaps and prepare. Certification is performed by accredited certification bodies.
Do we need to implement the whole series?
Rarely. Most asset owners apply the parts relevant to their role and systems, and set target security levels based on risk. Applicability is the first thing we clarify.
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Talk to us about IEC 62443 Assessment Support
Share your objectives and constraints. We'll help you define a scope that fits your operations.