PCI DSS
Global standard for securing payment cardholder data
IEC 62443
International standard for IACS cybersecurity frameworks.
Quick Verdict
PCI DSS mandates cardholder data protection for payment processors via audits and scans, preventing fines and bans. IEC 62443 provides risk-based cybersecurity for industrial control systems, enabling safe OT operations through zones, levels, and certifications.
PCI DSS
Payment Card Industry Data Security Standard
Key Features
- 12 requirements across 6 control objectives for CHD protection
- Contractually enforced by payment brands and acquiring banks
- Over 300 granular sub-requirements and testing procedures
- Merchant/service provider levels with tailored validation paths
- Strong emphasis on segmentation and data minimization
IEC 62443
IEC 62443: Industrial automation and control systems security
Key Features
- Zones and conduits segmentation model
- Risk-based security levels SL-T/SL-C/SL-A
- Shared responsibility across stakeholders
- Seven foundational requirements FR1-FR7
- ISASecure modular certification schemes
Detailed Analysis
A comprehensive look at the specific requirements, scope, and impact of each standard.
PCI DSS Details
What It Is
Payment Card Industry Data Security Standard (PCI DSS) is an industry-mandated security framework for protecting cardholder data (CHD) and sensitive authentication data (SAD). Developed by the PCI Security Standards Council (PCI SSC), it applies a control-based approach with 12 requirements under 6 objectives, focusing on entities storing, processing, or transmitting payment card data.
Key Components
- 12 core requirements spanning network security, data protection, vulnerability management, access controls, monitoring, and policy maintenance.
- Over 300 sub-requirements with testing procedures.
- Levels-based compliance model: SAQ for smaller entities, ROC via QSA for larger ones.
- Evolving versions like v4.0 emphasize MFA, segmentation, and customized approaches.
Why Organizations Use It
- Contractual obligation from card brands to avoid fines, processing bans.
- Reduces breach risks/costs ($37/record avg.), builds customer trust.
- Enhances security hygiene, supports regulatory alignment (e.g., GDPR).
Implementation Overview
- Phased: scope CDE, gap analysis, remediate, validate via ASV scans/QSA audits.
- Applies globally to merchants/service providers; 3-12 months typical.
- Ongoing: quarterly scans, annual tests, continuous monitoring.
IEC 62443 Details
What It Is
IEC 62443 (ISA/IEC 62443 series) is an international consensus-based standard series for securing 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 with unique constraints like availability and long lifecycles.
Key Components
- Four groupings: General (-1), Policies/Procedures (-2), System (-3), Components (-4).
- Seven Foundational Requirements (FR1-7) like identification, integrity, data flow.
- Zones/conduits model, **Security Levels (SL 0-4)SL-T (target), SL-C (capability), SL-A (achieved).
- ~127 CSMS requirements; supported by ISASecure certifications (SDLA, CSA, SSA).
Why Organizations Use It
- Mitigates OT cyber risks impacting safety, production.
- Meets regulatory references (e.g., NIS-2, NERC CIP alignments); enables insurance benefits.
- Builds supply chain trust via supplier SDL; drives competitive differentiation.
Implementation Overview
Phased: governance (2-1), risk assessment/segmentation (3-2), controls (3-3/4-2), certification. Applies to critical infrastructure globally; requires OT expertise, audits for maturity (ML1-4).
Key Differences
| Aspect | PCI DSS | IEC 62443 |
|---|---|---|
| Scope | Protects cardholder data storage/processing/transmission | Secures industrial automation/control systems lifecycle |
| Industry | Payment card handling merchants/service providers globally | Industrial sectors (energy, manufacturing, utilities) worldwide |
| Nature | Contractual standard enforced by card brands | Voluntary consensus framework for IACS cybersecurity |
| Testing | Quarterly ASV scans, annual ROC/SAQ by QSAs | Risk assessments, pen tests, ISASecure certifications |
| Penalties | Fines, loss of card processing privileges | No direct penalties, certification loss/reputational risk |
Scope
Industry
Nature
Testing
Penalties
Frequently Asked Questions
Common questions about PCI DSS and IEC 62443
PCI DSS FAQ
IEC 62443 FAQ
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