Let's take a look at the features of 'IEC 62443', which is widely adopted in regulations.

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Here’s a detailed breakdown of IEC 62443 standards:

IEC 62443 Standard Breakdown

StandardDefinition & ScopeKey RequirementsSpecial Notes
IEC 62443-1-1 
(Terminology, Concepts & Models)		Establishes the foundational concepts, common terminology, and models for IACS (Industrial Automation and Control Systems) security.Defines security levels (SL 1–4), zones, conduits, and risk-based approaches.Serves as an introductory document for understanding IEC 62443.
IEC 62443-1-2 (Master Glossary of Terms & Abbreviations)Provides a glossary of terms, acronyms, and definitions used throughout IEC 62443.Ensures terminological consistency across all parts of IEC 62443.Helps align with other cybersecurity and OT security standards.
IEC 62443-1-3 (System Security Conformance Metrics)Defines metrics and methods for evaluating security conformance in IACS.Provides quantitative and qualitative measures for system security.Helps assess maturity levels of security implementations.
IEC 62443-1-4 (IACS Security Lifecycle & Use Cases)Outlines the lifecycle approach for securing OT environments.Defines security phases: Design, Implementation, Operation, and Maintenance.Emphasizes continuous monitoring and improvement.
IEC 62443-2-1 (Security Program Requirements for IACS)Provides a cybersecurity management system (CSMS) for industrial environments.Covers policy creation, risk assessments, incident handling, and training.Similar to ISO 27001, but tailored for OT/ICS.
IEC 62443-2-2 (System Security Compliance Metrics)Establishes metrics for evaluating IACS security programs.Identifies gaps and provides improvement recommendations.Complements IEC 62443-1-3, but at a higher organizational level.
IEC 62443-2-3 (Patch Management for IACS)Provides guidelines on vulnerability and patch management for OT systems.Covers testing, deployment strategies, and rollback plans.Essential for maintaining secure yet stable OT environments.
IEC 62443-2-4 (Security Requirements for Service Providers)Defines security responsibilities for third-party service providers.Covers vendor risk management, SLAs, and contract security clauses.Helps secure outsourced OT security services.
IEC 62443-3-1 (Security Technologies for IACS)Provides technical security solutions for ICS.Discusses firewalls, intrusion detection, anomaly detection, encryption.Acts as a technical reference for designing OT security architectures.
IEC 62443-3-2 (Risk-Based System Security Assessment)Introduces a risk-based approach for IACS security.Covers risk identification, assessment, mitigation, and validation.Aligns with ISO 31000 risk management principles.
IEC 62443-3-3 (System Security Requirements & Security Levels)Defines security levels (SL 1-4) for industrial control systems.Enforces technical security controls such as authentication, encryption, access control.Helps manufacturers and operators certify their OT security levels.
IEC 62443-4-1 (Secure Product Development Lifecycle)Establishes requirements for secure development of industrial products.Covers secure coding practices, vulnerability management, and testing.Required for OT product vendors and manufacturers.
IEC 62443-4-2 (Technical Security Requirements for Components)Defines security requirements for individual components (e.g., PLCs, HMIs, RTUs, SCADA systems).Enforces authentication, data integrity, secure boot, and logging.Ensures embedded OT devices meet cybersecurity standards.

Recap

  • IEC 62443-1-x: Concepts & Terminology – Introduces security principles, models, and metrics.
  • IEC 62443-2-x: Security Management & Processes – Covers cybersecurity program development, patching, and vendor security.
  • IEC 62443-3-x: System-Level Security – Focuses on risk-based security design and security levels for entire systems.
  • IEC 62443-4-x: Component & Product Security – Defines secure development and security for industrial components.


#CPS #OT #XIoT #IoT #IIoT #IoMT #CPSSecurity #OTSecurity #IoTSecurity #CPS보안 #OT보안 #IoT보안

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