IEC 62443
International standard for IACS cybersecurity lifecycle frameworks
HITRUST CSF
Certifiable framework harmonizing 60+ security standards
Quick Verdict
IEC 62443 secures industrial OT/IACS via zones, security levels, and supplier certification for critical infrastructure. HITRUST CSF harmonizes IT/privacy controls for healthcare, enabling multi-regulation assurance. OT firms adopt IEC for safety; regulated IT uses HITRUST for certifiable trust.
IEC 62443
IEC 62443: Industrial automation and control systems security
Key Features
- Zones and conduits risk-based segmentation model
- SL-T, SL-C, SL-A security levels triad
- Shared responsibilities for asset owners, integrators, suppliers
- Seven foundational requirements across FR1-FR7
- Modular ISASecure certifications (SDLA, CSA, SSA)
HITRUST CSF
HITRUST Common Security Framework (CSF)
Key Features
- Harmonizes 60+ frameworks into single assessment
- Risk-based tailoring via organizational factors
- Maturity scoring across five levels per control
- Tiered certifications: e1, i1, r2 pathways
- MyCSF platform for scoping and evidence management
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. It uses a risk-based approach with zones/conduits segmentation and security levels (SL 0-4).
Key Components
- Four groupings: General (-1), Policies (-2), System (-3), Components (-4).
- Seven foundational requirements (FR1-7: IAC, UC, SI, DC, RDF, TRE, RA).
- SL-T (target), SL-C (capability), SL-A (achieved) model.
- ISASecure modular certifications: SDLA (4-1), CSA (4-2), SSA (3-3).
Why Organizations Use It
- Mitigates OT-specific risks like safety impacts and downtime.
- Meets regulatory references (e.g., NIS-2, NERC CIP alignments).
- Enables supplier assurance and procurement specs.
- Builds stakeholder trust via certifications; supports insurance reductions.
Implementation Overview
Phased: CSMS governance (2-1), risk assessment/zoning (3-2), controls (3-3/4-2). Applies to critical infrastructure globally; requires audits, maturity levels (ML1-4).
HITRUST CSF Details
What It Is
HITRUST Common Security Framework (CSF) is a certifiable, threat-adaptive control framework consolidating requirements from 60+ standards like HIPAA, NIST, ISO 27001, PCI DSS, and GDPR. It employs a risk-based, maturity-scoring approach for tailored security and privacy assurance.
Key Components
- 19 assessment domains covering governance, technical controls, and resilience.
- Hierarchical structure: 14 categories, ~49 objectives, ~156 specifications.
- **Five-level maturity modelPolicy, Procedure, Implemented, Measured, Managed.
- Tiered certifications: e1 (44 controls), i1 (182 requirements), r2 (risk-tailored).
Why Organizations Use It
- Harmonizes compliance for "assess once, report many."
- Provides credible third-party assurance via MyCSF platform and assessors.
- Reduces breach risk (99.4% breach-free certified environments).
- Enhances market access, insurance benefits, TPRM efficiency.
Implementation Overview
- Phased: scoping, readiness, remediation, validated assessment, maintenance.
- Suited for healthcare, finance; scalable by size/risk.
- Requires MyCSF, policies, evidence; 6-18 months typical.
Key Differences
| Aspect | IEC 62443 | HITRUST CSF |
|---|---|---|
| Scope | IACS/OT cybersecurity lifecycle, zones/conduits, SLs | General IT security/privacy, 19 domains, multi-regulations |
| Industry | Industrial sectors (energy, manufacturing, utilities), horizontal | Healthcare primary, finance/regulated data sectors |
| Nature | Voluntary consensus standards series, certifiable | Certifiable control framework, harmonized standards |
| Testing | ISASecure modular (CSA/SSA/SDLA), component/system audits | MyCSF validated assessments (e1/i1/r2), external assessors |
| Penalties | No legal penalties, loss of certification/market access | No legal penalties, loss of certification/customer contracts |
Scope
Industry
Nature
Testing
Penalties
Frequently Asked Questions
Common questions about IEC 62443 and HITRUST CSF
IEC 62443 FAQ
HITRUST CSF FAQ
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