IEC 62443 Gap Assessment
Systematic evaluation of your OT security posture against IEC 62443 requirements. We measure where you stand today, define where you need to be, and deliver a clear roadmap to close the gap.
Measuring Against the Standard
IEC 62443 is the international benchmark for industrial automation and control system security. It provides a comprehensive framework that addresses technical controls, organizational processes, and component-level requirements across the entire OT lifecycle.
A gap assessment shows you exactly where your organization stands relative to where it needs to be. Rather than a general security review, this engagement produces a precise, requirements-level evaluation that maps your current capabilities against the foundational requirements defined by the standard.
The assessment covers both technical controls and organizational processes. Strong firewalls mean little without proper change management. Effective monitoring is undermined without incident response procedures. We evaluate the complete picture to ensure your security program has no structural gaps.
IEC 62443 Foundational Requirements
- FR1: Identification and Authentication
- FR2: Use Control
- FR3: System Integrity
- FR4: Data Confidentiality
- FR5: Restricted Data Flow
- FR6: Timely Response to Events
- FR7: Resource Availability
Standards-Based Assessment
Precise, requirements-level evaluation against IEC 62443
Engagement Methodology
A structured, phased approach designed for the safety, availability, and compliance requirements of operational technology environments.
Scope and Zone Definition
Define the assessment boundary and identify zones and conduits per IEC 62443. Classify systems by their target security level based on risk, criticality, and operational role. Establish the mapping between physical infrastructure, logical network segments, and the IEC 62443 zone model that will guide the entire assessment.
Current State Documentation
Collect existing security documentation including policies, procedures, network diagrams, and asset inventories. Conduct structured interviews with operations, engineering, IT, and management personnel to understand actual practices versus documented procedures. Identify gaps between what is written and what is implemented.
IEC 62443 Requirements Mapping
Systematically evaluate the environment against all seven foundational requirements: Identification and Authentication (FR1), Use Control (FR2), System Integrity (FR3), Data Confidentiality (FR4), Restricted Data Flow (FR5), Timely Response to Events (FR6), and Resource Availability (FR7). Assess each requirement at the component, system, and organizational level.
Technical Controls Assessment
Assess technical security controls per IEC 62443-3-3 system security requirements. Evaluate access control mechanisms, network segmentation enforcement, monitoring and detection capabilities, and communication integrity for each defined zone. Verify that implemented controls meet the target security level assigned to each zone.
Organizational and Procedural Assessment
Evaluate the security management system per IEC 62443-2-1 requirements. Assess risk management processes, security policy framework, personnel security practices, physical security controls, network security administration, system configuration management, and incident response procedures. Identify procedural gaps that undermine technical controls.
Gap Analysis and Maturity Scoring
Produce a consolidated gap analysis that scores each assessment area against the target security level. Generate a maturity heat map that visualizes current state versus target across all foundational requirements and zones. Identify patterns, systemic weaknesses, and areas where the organization exceeds or falls short of its objectives.
Remediation Roadmap
Develop a phased remediation roadmap prioritized by risk impact and implementation complexity. Structure recommendations into three tiers: quick wins that can be addressed immediately, medium-term improvements requiring planning and resources, and strategic initiatives that involve architectural or organizational change. Include effort estimates and resource requirements for each recommendation.
Service Deliverables
- IEC 62443 gap analysis report with maturity scoring
- Requirements compliance matrix for FR1 through FR7
- Maturity heat map showing current state versus target
- Prioritized remediation roadmap
- Executive summary for management review
Frameworks We Align With
Industries Served
Start Your IEC 62443 Gap Assessment Engagement
Get in touch to discuss your specific OT environment and how we can scope this engagement for your organization.