IEC 62443
International standard for IACS cybersecurity lifecycle frameworks
ISO 14064
International standard for GHG quantification, reporting, verification
Quick Verdict
IEC 62443 secures industrial control systems via risk-based cybersecurity frameworks for OT environments, while ISO 14064 standardizes GHG emissions accounting and verification for all organizations. Companies adopt IEC 62443 for operational resilience; ISO 14064 for credible climate reporting and compliance.
IEC 62443
IEC 62443: Industrial automation and control systems security
Key Features
- Risk-based zones and conduits segmentation model
- Security levels SL-T, SL-C, SL-A triad
- Shared responsibility across asset owners, integrators, suppliers
- Seven foundational requirements FR1-FR7 taxonomy
- Modular ISASecure certifications SDLA, CSA, SSA
ISO 14064
ISO 14064 Greenhouse gases standards family
Key Features
- Three-part modular structure for inventories, projects, verification
- Five principles: relevance, completeness, consistency, transparency, accuracy
- Scopes 1-3 organizational boundaries and quantification
- Project baselines, additionality, monitoring requirements
- Risk-based validation/verification with materiality
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 standards for securing Industrial Automation and Control Systems (IACS). This consensus-based framework addresses OT cybersecurity across governance, risk assessment, system architecture, and product development. Its risk-based approach uses zones/conduits and security levels (SL0-SL4) to tailor protections to industrial constraints like availability and safety.
Key Components
- Four groupings: General (-1), Policies (-2), System (-3), Components (-4).
- Seven foundational requirements (FR1-7: IAC, UC, SI, DC, RDF, TRE, RA).
- Over 140 component requirements in IEC 62443-4-2.
- ISASecure modular certifications: SDLA (4-1), CSA (4-2), SSA (3-3).
Why Organizations Use It
- Mitigates OT-specific risks in critical infrastructure.
- Enables shared responsibility, reducing supply chain vulnerabilities.
- Supports regulatory compliance, insurance benefits, and market differentiation.
- Builds stakeholder trust via certified assurance chains.
Implementation Overview
Phased rollout: CSMS establishment (2-1), risk assessment/segmentation (3-2), controls (3-3/4-2). Applies to all IACS users globally; requires audits for certification. Multi-year for large orgs.
ISO 14064 Details
What It Is
ISO 14064 (Parts 1:2018, 2:2019, 3:2019) is an international standard family specifying requirements for quantifying, reporting, and verifying greenhouse gas (GHG) emissions/removals. This voluntary framework addresses organizational inventories, project reductions, and assurance using a principles-based approach focused on relevance, completeness, consistency, transparency, accuracy.
Key Components
- **Three partsPart 1 (organizational inventories, Scopes 1-3), Part 2 (project baselines/additionality), Part 3 (risk-based validation/verification).
- Five core principles underpin boundary-setting, data quality, uncertainty management.
- No fixed controls; emphasizes auditable processes, documentation trails.
- Third-party verification model enhances credibility.
Why Organizations Use It
- Supports regulatory compliance (CSRD, SB-253), investor disclosures, carbon markets.
- Mitigates greenwashing risks, drives efficiencies, supply-chain decarbonization.
- Builds trust via independent assurance, enables strategic decision-making.
Implementation Overview
- Phased: governance, boundaries/data collection, reporting, verification.
- Suited for all sizes/industries; cross-functional, 6-12 months typical.
- Optional Part 3 assurance recommended for market demands.
Key Differences
| Aspect | IEC 62443 | ISO 14064 |
|---|---|---|
| Scope | IACS cybersecurity lifecycle and requirements | GHG emissions quantification, reporting, verification |
| Industry | Industrial sectors using automation (OT) | All organizations across all sectors |
| Nature | Voluntary consensus standards series | Voluntary international standards family |
| Testing | ISASecure modular certifications (CSA/SSA/SDLA) | Third-party validation/verification (ISO 14064-3) |
| Penalties | No legal penalties; loss of certification | No direct penalties; regulatory reporting risks |
Scope
Industry
Nature
Testing
Penalties
Frequently Asked Questions
Common questions about IEC 62443 and ISO 14064
IEC 62443 FAQ
ISO 14064 FAQ
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