IEC 62443-3-3 Cybersecurity Implementation Checklist for Mining OT

IEC 62443-3-3 defines security requirements for industrial automation and control systems (IACS) at the system level, specifying 12 foundational requirements (FRs) grouped into seven categories: identification and authentication, use control, system integrity, data confidentiality, restricted data flow, timely response to events, and resource availability. In mining OT contexts—characterized by legacy equipment, geographically dispersed assets, harsh environmental conditions, and convergence of IT/OT/ET (electrical technology)—the checklist adapts these FRs to address domain-specific threats such as unauthorized remote access to PLCs managing ventilation or dewatering systems, supply chain compromises in third-party SCADA integrations, and insider threats targeting energy management systems. Implementation involves threat modeling (e.g., STRIDE applied to mine network zones), security level assignment based on consequence analysis (e.g., SL-2 for grid-connected medium-voltage substations where failure could cause regional outages), and evidence-based verification of controls like secure boot, role-based access enforcement, and encrypted telemetry. The checklist further integrates lifecycle considerations—such as secure development practices for custom HMI applications used in blast monitoring—and aligns with ISO/IEC 27001 and NIST SP 800-82 for cross-framework consistency while prioritizing safety-critical constraints (e.g., SIL-2 compatibility per IEC 61511).