IEC 62443 Alignment Guide

IEC 62443 is a lifecycle cybersecurity standard set for Industrial Automation and Control Systems (IACS). It covers governance and management (CSMS), system design (zones & conduits), and detailed technical requirements organized into Foundational Requirements (FRs).QuantLayer accelerates IEC 62443 programs by providing a unified control plane for identity, segmentation, integrity, telemetry, and response—while generating evidence that supports conformance and certification activities.

• Policies & Procedures (62443-2-x): CSMS roles, change/patch processes, incident response, audits, and continuous improvement.
• System Requirements (62443-3-x): Segmentation, integrity monitoring, and security level targets per zone.
• Foundational Requirements (FR 1–FR 7): Identification, use control, system integrity, confidentiality, restricted flows, timely response, availability.

Technical requirements are grouped into the seven FR pillars so you can map each control to QuantLayer capabilities.

• Define scope (systems, sites, critical processes) and key stakeholders (OT engineering, security, safety, operations).
• Establish CSMS governance (policies, roles, training, incident handling, audit cadence).
• Model zones & conduits and assign Target Security Levels (SL-T) per zone/conduit based on risk.
• Implement FR controls using QuantLayer (identity, least privilege, segmentation, integrity monitoring, logging, response).
• Verify and evidence controls with continuous telemetry, immutable logs, and compliance reporting.

Immutable Evidence Ledger: Cryptographically anchored logs of enrollment, policy changes, access decisions, and response actions for audit trails and incident forensics.

Control Coverage Views: Dashboards showing FR-aligned control posture by zone, device class, site, and security level target.

Conformance Reports: Exportable evidence packs for auditors including access control proofs, segmentation policies, integrity events, patch posture, and incident timelines.