IEC 62443
International standards series for IACS cybersecurity
AS9100
Global QMS standard for aviation, space, and defense.
Quick Verdict
IEC 62443 secures industrial control systems via zones, security levels and certifications for OT resilience. AS9100 ensures aerospace quality through product safety, configuration and supplier controls. Organizations adopt them for risk mitigation, compliance and supply chain assurance.
IEC 62443
IEC 62443: IACS Cybersecurity Standards Series
Key Features
- Risk-based zones and conduits segmentation model
- Security Levels SL-T, SL-C, SL-A triad
- Shared responsibility for asset owners, integrators, suppliers
- Seven Foundational Requirements mapped to controls
- ISASecure modular certifications for components, systems
AS9100
AS9100D Quality Management Systems for Aviation, Space, Defense
Key Features
- Configuration management ensures product integrity
- Product safety controls across lifecycle
- Counterfeit parts prevention and detection
- Operational risk management in processes
- Enhanced supplier controls and traceability
Detailed Analysis
A comprehensive look at the specific requirements, scope, and impact of each standard.
IEC 62443 Details
What It Is
IEC 62443 is the ISA/IEC series of consensus-based international standards for cybersecurity of Industrial Automation and Control Systems (IACS). It provides a comprehensive, risk-based framework spanning governance, risk assessment, system architecture, and component requirements tailored to OT environments.
Key Components
- Four groupings: General (-1), Policies (-2), System (-3), Components (-4).
- Seven Foundational Requirements (FR1-7) like identification, integrity, data flow.
- Zones/conduits model and Security Levels (SL 0-4: SL-T target, SL-C capability, SL-A achieved).
- Maturity levels (ML1-4) and ISASecure certifications (SDLA, CSA, SSA).
Why Organizations Use It
- Mitigates OT-specific risks (safety, availability, legacy systems).
- Enables shared responsibility, supply chain assurance, regulatory alignment.
- Reduces downtime, insurance costs; boosts procurement, market differentiation.
Implementation Overview
- Phased: CSMS establishment (-2-1), risk assessment/segmentation (-3-2), controls (-3-3/-4-2).
- Applies to critical infrastructure globally; requires audits, certifications for assurance.
AS9100 Details
What It Is
AS9100D (AS9100:2016) is the international quality management system (QMS) certification standard for aviation, space, and defense organizations. It builds on ISO 9001:2015 with over 100 aerospace-specific requirements, using a risk-based, process-oriented approach focused on product safety, configuration integrity, and supply chain control across the product lifecycle.
Key Components
- 10-clause Annex SL structure covering context, leadership, planning, support, operation, evaluation, and improvement.
- Aerospace additions: configuration management (8.1.2), product safety (8.1.3), counterfeit parts prevention (8.1.4), operational risk (8.1.1), human factors, and enhanced supplier controls.
- Built on PDCA cycle with third-party certification via accredited audits.
Why Organizations Use It
- Meets OEM/contractual mandates for market access.
- Reduces quality escapes, rework, and supply chain risks.
- Improves delivery, traceability, and safety for competitive edge.
- Builds stakeholder trust through OASIS database visibility.
Implementation Overview
- Phased: gap analysis, process design, training, internal audits, Stage 1/2 certification.
- Applies to manufacturers, designers, MROs globally; 6-18 months typical.
- Requires evidence-based audits, annual surveillance, triennial recertification. (178 words)
Key Differences
| Aspect | IEC 62443 | AS9100 |
|---|---|---|
| Scope | IACS cybersecurity lifecycle, zones/conduits, SLs | Aerospace QMS, product safety, configuration, counterfeit |
| Industry | Industrial automation, OT across sectors globally | Aviation, space, defense supply chains globally |
| Nature | Voluntary cybersecurity standards series, certification | Voluntary QMS certification standard |
| Testing | ISASecure modular certifications, risk assessments | Stage 1/2 audits, annual surveillance, recertification |
| Penalties | Loss of certification, supply chain exclusion | Loss of certification, contract disqualification |
Scope
Industry
Nature
Testing
Penalties
Frequently Asked Questions
Common questions about IEC 62443 and AS9100
IEC 62443 FAQ
AS9100 FAQ
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