IEC 62443, the industrial equivalent of ISO 27001<\/strong> The same risk management and control logic... with added constraints<\/strong> related to production (availability, personal safety, long equipment life, limited maintenance windows, maintenance providers, etc.).<\/p>\n It provides a framework specific to industrial systems (OT\/ICS\/SCADA)<\/strong> to reduce unplanned stoppages, avoid safety incidents and prove to your customers that the plant is under control. It applies to three roles<\/strong> life cycle : suppliers\/builders<\/strong>, integrators<\/strong> and operators<\/strong>.<\/p>\n ISO 27001 structures global governance (ISMS). 1) Zones & Conduits<\/strong><\/p>\n We segment<\/strong> the workshop in zones<\/strong> (robot cell, supervision, DMZ, OT server room...) and we control the ducts<\/strong> (flows) between them. Objective: limit propagation<\/strong> and make visible the passage points to be filtered.<\/p>\n 2) Safety levels (SL)<\/strong><\/p>\n We set targets SL<\/strong> by use and risk (e.g. SL2 for supervision, SL3 for machine safety). This guides hardening without over-specifying.<\/p>\n 3) \"Terrain-compatible\" hardening<\/strong><\/p>\n Shared HMI stations, maintenance accounts, Obsolete OS<\/strong> imposed by an automaton, equipment without corrective action... compensatory measures<\/strong> : machine insulation<\/strong>, virtual patching<\/strong> gateway, network hardening by allow-list<\/strong>, one-way flow<\/strong> (data diode) when necessary.<\/p>\n 4) Admin paths and maintenance accesses<\/strong><\/p>\n We separate the administration paths<\/strong> the rest, we demand nominative accounts<\/strong>and temporary elevations<\/strong>(badges, short sessions), logging of interventions service providers<\/strong> and we keep the proof.<\/p>\n 5) Complete life cycle<\/strong><\/p>\n Design \u2192 integration \u2192 operation\/maintenance<\/strong>. The requirements don't stop with the project: they cover updates, backup\/restore of PLC recipes, change management and end-of-life.<\/p>\n Regular updates<\/strong> \u27f6 when it's impossible<\/em> : strict insulation<\/strong>supervision, integrity control.<\/p>\n<\/li>\n Securing workstations<\/strong> \u27f6 Shared HMI : nominative accounts<\/strong>, time-limited sessions<\/strong>automatic locking.<\/p>\n<\/li>\n Network segmentation<\/strong> \u27f6 interconnected lines : DMZ OT<\/strong>filtered gateways, white-listed flows<\/strong>, central logging<\/strong>.<\/p>\n<\/li>\n<\/ul>\n Simple mapping<\/strong> : cells, PLCs, HMI, servers, gateways, IT-OT links.<\/p>\n<\/li>\n Cut into zones<\/strong> and draw existing conduits; mark unfiltered \"bridges\".<\/p>\n<\/li>\n Setting SL<\/strong> by zone (depending on risk and production constraints).<\/p>\n<\/li>\n Treating 10% which makes 80% of risk<\/strong> These include isolating what cannot be patched, shutting down unnecessary flows, and securing maintenance access.<\/p>\n<\/li>\n Prove<\/strong> : tested backups, intervention traces, up-to-date list of authorized flows.<\/p>\n<\/li>\n<\/ul>\n IEC 62443 puts ISO 27001 at the machine level.<\/strong> It respects production constraints while imposing a discipline of architecture, access and proof. By addressing isolation, flow and maintenance access first, you greatly reduce risk without shutting down the plant - and you speak the same language as your industrial partners.<\/p>\n A first concrete step towards IEC 62443?<\/p>","protected":false},"excerpt":{"rendered":" L\u2019id\u00e9e en une phrase IEC 62443, c\u2019est l\u2019\u00e9quivalent industriel d\u2019ISO 27001 : m\u00eame logique de gestion des risques et de contr\u00f4les\u2026 avec des contraintes en plus li\u00e9es \u00e0 la production (disponibilit\u00e9, s\u00e9curit\u00e9 des personnes, vie longue des \u00e9quipements, fen\u00eatres de maintenance limit\u00e9es, prestataires de maintenance, etc.). \u00c0 quoi sert l\u2019IEC 62443 ? Elle donne un […]<\/p>","protected":false},"author":3,"featured_media":3231,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[22],"tags":[],"class_list":["post-3225","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-pilotage-conformite"],"acf":[],"yoast_head":"\nWhat is IEC 62443 used for?<\/h2>\n
IEC 62443 translates this intention to the production line level<\/strong> architecture, workstations, networks, field procedures.<\/p>\n5 concepts that make all the difference<\/h2>\n
Examples of \"ISO into atelier\" adaptations<\/h2>\n
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How to get started without blocking production<\/h2>\n
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Conclusion<\/h2>\n