IEC 62443
Industrial Security Standard

Comprehensive cybersecurity framework for industrial automation and control systems

Industrial SecurityCybersecurity FrameworkOT ProtectionRisk ManagementCompliance Ready

Framework Overview

The IEC 62443 series provides a comprehensive, flexible framework to address and mitigate current and future security vulnerabilities in industrial automation and control systems (IACS).

Six comprehensive tiers covering everything from fundamental concepts to specific implementation requirements.

Document Classification System

Document Types

StandardNormative document with mandatory requirements
TSTechnical Specification (Functional)
TRTechnical Report (Procedural)
PASPublicly Available Specification

Publication Status

PublishedOfficially released and available
Under RevisionCurrently being updated
In DevelopmentActively being developed
Revision

IEC 62443 Standard Architecture

Tier 1: General

Covers fundamental concepts, terminology, and models for industrial automation and control systems security.

Related Documents (6)

IEC 62443-1-1

StandardPublished

Terminology, concepts and models

Establishes the core terminology and concepts used throughout the IEC 62443 series. Provides the foundation for understanding industrial cybersecurity principles.

IEC 62443-1-2

TRPublished

Master glossary of terms and abbreviations

Comprehensive glossary that standardizes terminology across all parts of the IEC 62443 series, ensuring consistent interpretation and application.

IEC 62443-1-3

TRIn Development

Performance metrics for IACS security

Defines metrics for measuring the performance of security controls in industrial automation and control systems. Provides a framework for evaluating security effectiveness.

IEC 62443-1-4

TRPublished

IACS security lifecycle and use-cases

Describes the security lifecycle for industrial automation and control systems. Provides practical use cases to illustrate security concepts and implementation approaches.

IEC 62443-1-5

TRIn Development

IScheme for IEC 62443 Cyber Security Profiles

Establishes a framework for creating cybersecurity profiles based on the IEC 62443 standard. Enables industry-specific adaptations of the standard.

IEC 62443-1-6

TRIn Development

Application of the ISA/IEC 62443 standards to the ICT

Provides guidance on applying IEC 62443 standards to Information and Communication Technology (ICT) systems that interact with industrial control systems.

Tier 2: Policies & Procedures

Addresses organizational security policies and procedures for industrial automation and control systems.

Related Documents (5)

IEC 62443-2-1

StandardPublished

Security program requirements for IACS asset owners

Defines requirements for establishing and maintaining an effective cybersecurity management system for industrial automation and control systems. Focuses on organizational aspects of security.

IEC 62443-2-2

PASPublished

IACS Security Protection Rating

Provides a methodology for rating the security protection capabilities of industrial automation and control systems. Helps organizations assess their security posture.

IEC 62443-2-3

TRPublished

Patch management in the IACS environment

Provides guidance on establishing and operating a patch management program for industrial automation and control systems. Addresses the unique challenges of patching operational technology.

IEC 62443-2-4

StandardPublished

Security program requirements for IACS service providers

Specifies requirements for security programs of service providers that perform integration, maintenance, or other services for industrial automation and control systems.

IEC 62443-2-5

TRIn Development

Implementation guidance for IACS asset owners

Provides practical guidance for asset owners on implementing security controls in industrial environments. Includes best practices and implementation considerations.

Tier 3: System

Focuses on system-level security requirements and security assurance levels for industrial control systems.

Related Documents (3)

IEC 62443-3-1

TRIn Development

Security technologies for IACS

Provides an overview of security technologies applicable to industrial automation and control systems. Includes guidance on selecting appropriate technologies for different environments.

IEC 62443-3-2

StandardPublished

Security Risk Assessment for System Design

Establishes requirements for assessing cybersecurity risk for industrial automation and control systems. Provides a methodology for determining appropriate security levels for zones and conduits.

IEC 62443-3-3

StandardPublished

System security requirements and security levels

Defines system security requirements and security levels for industrial automation and control systems. Provides a framework for specifying security capabilities required for a given security level.

Tier 4: Component/Product

Addresses security requirements for components and development processes in industrial control systems.

Related Documents (2)

IEC IEC 62443-4-1

StandardPublished

Secure Product Development Lifecycle Requirements

Specifies process requirements for the secure development of products used in industrial automation and control systems. Defines a secure development lifecycle for control system components.

IEC IEC 62443-4-2

StandardPublished

Technical security requirements for IACS components

Provides detailed technical security requirements for components used in industrial automation and control systems. Categorizes components and specifies requirements for each category.

Tier 5: Profiles

Provides industry-specific security profiles and implementation guidance for different sectors.

Related Documents (2)

IEC 62443-5-x

TSIn Development

Industry-Specific Profiles

Series of documents providing industry-specific security profiles based on the IEC 62443 framework. Tailors security requirements to specific industrial sectors and applications.

Profile X

TSIn Development

Sector-Specific Implementation

Placeholder for future industry-specific security profiles. Will provide detailed implementation guidance for particular industrial sectors.IEC

Tier 6: Evaluation & Conformance

Provides methodologies for evaluating compliance with the IEC 62443 standard and certification frameworks.

Related Documents (2)

IEC 62443-6-1

TRPublished

Security Evaluation Methodology for IEC 62443-2-4

Provides a methodology for evaluating compliance with the requirements specified in IEC 62443-2-4 for service providers. Establishes criteria for assessing service provider security programs.

IEC 62443-6-2

TRPublished

Security Evaluation Methodology for IEC 62443-4-2

Establishes a methodology for evaluating compliance with the technical security requirements for components specified in IEC 62443-4-2. Provides a framework for component certification.

Implementation Lifecycle

A systematic three-phase approach to building comprehensive industrial cybersecurity capabilities.

1
2
3

Phase 1: Assess

Evaluate current security posture and identify risks to industrial control systems.

1

Key Activities

Inventory control systems and assets
Identify zones and conduits
Conduct risk assessment
Determine target security levels

Key Standards

IEC 62443-3-2
IEC 62443-1-1

Phase 2: Develop & Implement

Create and deploy security policies, procedures, and controls based on assessment results.

2

Key Activities

Develop security policies and procedures
Create security architecture
Implement network segmentation
Deploy security controls
Configure systems securely
Train personnel

Key Standards

IEC 62443-2-1
IEC 62443-3-3
IEC 62443-4-2

Phase 3: Maintain

Continuously monitor, maintain, and improve the security of industrial control systems.

3

Key Activities

Monitor security controls
Manage patches and updates
Respond to security incidents
Continuously improve security
Conduct periodic reassessments

Key Standards

IEC 62443-2-3
IEC 62443-2-4

Key Benefits

Implementing IEC 62443 delivers comprehensive value across security, compliance, and business continuity dimensions.

Multi-layered defense approach
Risk-based security controls
Threat-specific countermeasures
Continuous security monitoring
International standard recognition
Audit-ready documentation
Compliance tracking and reporting
Regulatory alignment assurance
Reduced downtime risk
Operational resilience
Business process protection
Incident response capabilities
Legacy system compatibility
Scalable architecture
Interoperability standards
Gradual implementation approach

Ready to Secure Your Industrial Systems?

Start your journey with the IEC 62443 framework and build robust cybersecurity for your industrial automation and control systems.