Deep compliance advisory for IEC 62443 industrial cybersecurity standard — from initial zone/conduit design through to full IACS security management system implementation and documentation.
IEC 62443 is the internationally recognised standard for Industrial Automation and Control System (IACS) security. As regulatory requirements in the energy, water, and critical infrastructure sectors increasingly reference IEC 62443, and as cyber insurance underwriters adopt it as a benchmark, the ability to demonstrate structured compliance is becoming a commercial necessity.
Rebus Novus provides structured IEC 62443 advisory across the complete standard suite: IEC 62443-2-1 (security management system), IEC 62443-3-2 (zone and conduit design), IEC 62443-3-3 (system security requirements), and IEC 62443-4-2 (component security requirements for vendors).
Our compliance engagements follow a structured methodology: gap assessment against the relevant IEC 62443 parts, Security Level (SL) target definition for each identified zone, zone/conduit architecture design, IACS Security Management System (ISMS) advisory, vendor and component security evaluation against IEC 62443-4-2 requirements, and compilation of the compliance documentation package required for certification or regulatory submission.
We work closely with system integrators, owner-operators, and product vendors — and have supported IEC 62443 compliance programmes across oil & gas, utilities, and critical national infrastructure projects in the GCC.
Tell us your application and challenge — our engineering team will recommend the right approach, technology fit and a clear roadmap, no obligation.