IEC 62443-2-1: Cybersecurity Management System (CSMS)

IEC 62443-2-1 defines requirements for establishing and maintaining a Cybersecurity Management System (CSMS) for industrial automation and control systems. It focuses on governance, policy, risk management, incident handling, and continuous improvement.

• Governance & Roles: define responsibilities, approvals, and accountability across engineering, operations, and IT.
• Risk & Change Management: assess risk, control changes, manage baselines, and document exceptions.
• Incident Response: prepare, detect, respond, recover, and feed lessons learned back into policies.
• Patch & Vulnerability Handling: track firmware/software, validate patches, and coordinate safe remediation.
• Audits & Continuous Improvement: run periodic assessments, derive metrics, and iterate based on operational evidence.
• Supplier & Third-Party Access: control vendor remote access, logging, and contract requirements for cybersecurity obligations.

• Policy control plane: centralized governance for segmentation and access policies with approvals and immutable history.
• Continuous visibility: asset/device inventory, identity posture, and trust drift tracking across sites.
• Incident handling support: correlated events, guided response playbooks, containment actions, and timeline reconstruction.
• Vendor access controls: session-based access, step-up verification, and command/audit logging for remote maintenance.

Operational safety: in OT, enforcement is staged and reversible—QuantLayer supports observe/alert/enforce modes and maintenance-window activations.

• Policies, exceptions, approvals (who/what/when) for access control and segmentation.
• Asset inventory and change history (new devices, configuration drift, firmware changes).
• Event logs and incident timelines (alerts, response, containment, recovery).
• Patch and vulnerability posture reports (coverage, priority, remediation status).