{"id":51266,"date":"2026-02-23T10:06:04","date_gmt":"2026-02-23T09:06:04","guid":{"rendered":"https:\/\/www.gt-engineering.it\/?post_type=normativa_tecnica&p=51266"},"modified":"2026-02-23T10:27:10","modified_gmt":"2026-02-23T09:27:10","slug":"structure-of-iec-62443-series","status":"publish","type":"normativa_tecnica","link":"https:\/\/www.gt-engineering.it\/en\/technical-standards\/en-iec-standards\/iec-62443-series\/structure-of-iec-62443-series\/","title":{"rendered":"How is IEC 62443 Series structured?"},"content":{"rendered":"\n\n \n \n \n
\n\n \n \n \n
\n \n
\n

IEC 62443 Series is structured into four main parts, each addressing a different aspect of industrial cybersecurity:<\/p>\n

    \n
  • \n
      \n
    • General,<\/li>\n
    • Policies & Procedures,<\/li>\n
    • System,<\/li>\n
    • Component.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/div> <\/div>\n \n \n
      <\/div>\n \n\n <\/div>\n <\/section>\n\n \n\n\n\n\n \n \n \n
      \n\n \n
      \n \n
      \n \n \n

      \n 1. General (IEC 62443-1-x) <\/h2>\n <\/div>\n <\/div>\n \n \n
      \n \n
      \n

      The General<\/span> part provides the foundational concepts, terminology, and models used throughout the entire IEC 62443 Series. It establishes a common language and conceptual framework for all stakeholders involved in industrial cybersecurity. Key elements include:<\/p>\n

        \n
      • \n
          \n
        • Definitions of key cybersecurity concepts such as zones, conduits, security levels, and risk.<\/li>\n
        • Description of typical industrial automation architectures and threat environments.<\/li>\n
        • Introduction of the defense-in-depth strategy for industrial systems.<\/li>\n
        • Alignment of cybersecurity concepts with safety and reliability considerations.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n

          This part is primarily informative and serves as the conceptual backbone of the standard. It ensures that all stakeholders\u2014technical and non-technical\u2014share a common understanding of cybersecurity principles before moving to implementation.<\/p>\n<\/div> <\/div>\n \n \n

          <\/div>\n \n\n <\/div>\n <\/section>\n\n \n\n\n\n\n \n \n \n
          \n\n \n
          \n \n
          \n \n \n

          \n 2. Policies & Procedures (IEC 62443-2-x) <\/h2>\n <\/div>\n <\/div>\n \n \n \r\n\r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n <\/picture>\r\n\r\n \r\n\r\n \r\n \r\n <\/div>\n \n
          \n \n
          \n

          The Policies & Procedures<\/span> part focuses on organizational and managerial aspects of cybersecurity. It defines how companies should establish, manage, and continuously improve their cybersecurity programs.<\/p>\n

          Key topics include:<\/p>\n

            \n
          • \n
              \n
            • Cybersecurity governance and responsibility assignment.<\/li>\n
            • Risk assessment and risk management processes.<\/li>\n
            • Asset management and system lifecycle management.<\/li>\n
            • Incident response, patch management, and change management.<\/li>\n
            • Requirements for service providers and integrators.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n

              This part is primarily aimed at asset owners and service providers, ensuring that cybersecurity is embedded into organizational processes rather than treated as a purely technical issue. It emphasizes that secure systems cannot exist without structured management, trained personnel, and documented procedures.<\/p>\n<\/div> <\/div>\n \n \n

              <\/div>\n \n\n <\/div>\n <\/section>\n\n \n\n\n\n\n \n \n \n
              \n\n \n
              \n \n
              \n \n \n

              \n 3. System (IEC 62443-3-x) <\/h2>\n <\/div>\n <\/div>\n \n \n
              \n \n
              \n

              The System<\/span> part addresses cybersecurity at the level of the entire industrial automation system. It defines technical requirements for designing and implementing secure system architectures. Key concepts include:<\/p>\n

                \n
              • \n
                  \n
                • Zones and conduits: grouping assets with similar security requirements and controlling communication between them.<\/li>\n
                • Security levels (SL 1\u20134): representing increasing resistance against threat actors with different capabilities and motivations.<\/li>\n
                • System-level security requirements for access control, network segmentation, system integrity, monitoring, and availability.<\/li>\n
                • Secure integration of components from multiple vendors.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n

                  This part is particularly relevant to system integrators and cybersecurity architects, as it translates organizational security goals into concrete technical architectures.<\/p>\n<\/div> <\/div>\n \n \n

                  <\/div>\n \n\n <\/div>\n <\/section>\n\n \n\n\n\n\n \n \n \n
                  \n\n \n
                  \n \n
                  \n \n \n

                  \n 4. Component (IEC 62443-4-x) <\/h2>\n <\/div>\n <\/div>\n \n \n
                  \n \n
                  \n

                  The Component<\/span> part focuses on individual products such as PLCs, RTUs, HMIs, industrial switches, and software components. It defines:<\/p>\n

                    \n
                  • \n
                      \n
                    • Secure development lifecycle requirements for product suppliers.<\/li>\n
                    • Technical security capabilities that components must provide, such as authentication, authorization, secure communication, and integrity checks.<\/li>\n
                    • Security capability levels aligned with system-level security requirements.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n

                      This section ensures that industrial components are designed with cybersecurity in mind and can be securely integrated into larger systems. It is particularly relevant for product manufacturers and vendors.<\/p>\n<\/div> <\/div>\n \n \n

                      <\/div>\n \n\n <\/div>\n <\/section>\n\n \n","protected":false},"excerpt":{"rendered":"

                      IEC 62443 is structured into four main parts, each addressing a different aspect of industrial cybersecurity<\/p>\n","protected":false},"author":2,"featured_media":51173,"parent":51140,"menu_order":2,"template":"","meta":{"_acf_changed":false,"footnotes":""},"normative-tecniche":[58],"class_list":["post-51266","normativa_tecnica","type-normativa_tecnica","status-publish","has-post-thumbnail","hentry","tipologia_normativa-en-iec-standards"],"acf":{"sottotitolo":"","allegati":null},"yoast_head":"\nHow is IEC 62443 Series structured? - Gt-Engineering<\/title>\n<meta name=\"description\" content=\"This article will clearly present the structure of the IEC 62443 series of standards.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.gt-engineering.it\/en\/technical-standards\/en-iec-standards\/iec-62443-series\/structure-of-iec-62443-series\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"How is IEC 62443 Series structured? - Gt-Engineering\" \/>\n<meta property=\"og:description\" content=\"This article will clearly present the structure of the IEC 62443 series of standards.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.gt-engineering.it\/en\/technical-standards\/en-iec-standards\/iec-62443-series\/structure-of-iec-62443-series\/\" \/>\n<meta property=\"og:site_name\" content=\"Gt-Engineering\" \/>\n<meta property=\"article:modified_time\" content=\"2026-02-23T09:27:10+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.gt-engineering.it\/wp-content\/uploads\/2026\/02\/Immagine-2026-2.png\" \/>\n\t<meta property=\"og:image:width\" content=\"712\" \/>\n\t<meta property=\"og:image:height\" content=\"520\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.gt-engineering.it\/en\/technical-standards\/en-iec-standards\/iec-62443-series\/structure-of-iec-62443-series\/\",\"url\":\"https:\/\/www.gt-engineering.it\/en\/technical-standards\/en-iec-standards\/iec-62443-series\/structure-of-iec-62443-series\/\",\"name\":\"How is IEC 62443 Series structured? - Gt-Engineering\",\"isPartOf\":{\"@id\":\"https:\/\/www.gt-engineering.it\/en\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/www.gt-engineering.it\/en\/technical-standards\/en-iec-standards\/iec-62443-series\/structure-of-iec-62443-series\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/www.gt-engineering.it\/en\/technical-standards\/en-iec-standards\/iec-62443-series\/structure-of-iec-62443-series\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/www.gt-engineering.it\/wp-content\/uploads\/2026\/02\/Immagine-2026-2.png\",\"datePublished\":\"2026-02-23T09:06:04+00:00\",\"dateModified\":\"2026-02-23T09:27:10+00:00\",\"description\":\"This article will clearly present the structure of the IEC 62443 series of standards.\",\"breadcrumb\":{\"@id\":\"https:\/\/www.gt-engineering.it\/en\/technical-standards\/en-iec-standards\/iec-62443-series\/structure-of-iec-62443-series\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/www.gt-engineering.it\/en\/technical-standards\/en-iec-standards\/iec-62443-series\/structure-of-iec-62443-series\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/www.gt-engineering.it\/en\/technical-standards\/en-iec-standards\/iec-62443-series\/structure-of-iec-62443-series\/#primaryimage\",\"url\":\"https:\/\/www.gt-engineering.it\/wp-content\/uploads\/2026\/02\/Immagine-2026-2.png\",\"contentUrl\":\"https:\/\/www.gt-engineering.it\/wp-content\/uploads\/2026\/02\/Immagine-2026-2.png\",\"width\":712,\"height\":520,\"caption\":\"Represents the structure of the IEC 62443 Series\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/www.gt-engineering.it\/en\/technical-standards\/en-iec-standards\/iec-62443-series\/structure-of-iec-62443-series\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/www.gt-engineering.it\/en\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Technical standards\",\"item\":\"https:\/\/www.gt-engineering.it\/en\/normative-tecniche\/\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"EN IEC Standards\",\"item\":\"https:\/\/www.gt-engineering.it\/en\/technical-standards\/en-iec-standards\/\"},{\"@type\":\"ListItem\",\"position\":4,\"name\":\"IEC 62443 Series\",\"item\":\"https:\/\/www.gt-engineering.it\/en\/technical-standards\/en-iec-standards\/iec-62443-series\/\"},{\"@type\":\"ListItem\",\"position\":5,\"name\":\"How is IEC 62443 Series structured?\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/www.gt-engineering.it\/en\/#website\",\"url\":\"https:\/\/www.gt-engineering.it\/en\/\",\"name\":\"Gt-Engineering\",\"description\":\"bizonweb\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/www.gt-engineering.it\/en\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"How is IEC 62443 Series structured? - Gt-Engineering","description":"This article will clearly present the structure of the IEC 62443 series of standards.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.gt-engineering.it\/en\/technical-standards\/en-iec-standards\/iec-62443-series\/structure-of-iec-62443-series\/","og_locale":"en_US","og_type":"article","og_title":"How is IEC 62443 Series structured? - Gt-Engineering","og_description":"This article will clearly present the structure of the IEC 62443 series of standards.","og_url":"https:\/\/www.gt-engineering.it\/en\/technical-standards\/en-iec-standards\/iec-62443-series\/structure-of-iec-62443-series\/","og_site_name":"Gt-Engineering","article_modified_time":"2026-02-23T09:27:10+00:00","og_image":[{"width":712,"height":520,"url":"https:\/\/www.gt-engineering.it\/wp-content\/uploads\/2026\/02\/Immagine-2026-2.png","type":"image\/png"}],"twitter_card":"summary_large_image","twitter_misc":{"Est. reading time":"1 minute"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/www.gt-engineering.it\/en\/technical-standards\/en-iec-standards\/iec-62443-series\/structure-of-iec-62443-series\/","url":"https:\/\/www.gt-engineering.it\/en\/technical-standards\/en-iec-standards\/iec-62443-series\/structure-of-iec-62443-series\/","name":"How is IEC 62443 Series structured? - Gt-Engineering","isPartOf":{"@id":"https:\/\/www.gt-engineering.it\/en\/#website"},"primaryImageOfPage":{"@id":"https:\/\/www.gt-engineering.it\/en\/technical-standards\/en-iec-standards\/iec-62443-series\/structure-of-iec-62443-series\/#primaryimage"},"image":{"@id":"https:\/\/www.gt-engineering.it\/en\/technical-standards\/en-iec-standards\/iec-62443-series\/structure-of-iec-62443-series\/#primaryimage"},"thumbnailUrl":"https:\/\/www.gt-engineering.it\/wp-content\/uploads\/2026\/02\/Immagine-2026-2.png","datePublished":"2026-02-23T09:06:04+00:00","dateModified":"2026-02-23T09:27:10+00:00","description":"This article will clearly present the structure of the IEC 62443 series of standards.","breadcrumb":{"@id":"https:\/\/www.gt-engineering.it\/en\/technical-standards\/en-iec-standards\/iec-62443-series\/structure-of-iec-62443-series\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.gt-engineering.it\/en\/technical-standards\/en-iec-standards\/iec-62443-series\/structure-of-iec-62443-series\/"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/www.gt-engineering.it\/en\/technical-standards\/en-iec-standards\/iec-62443-series\/structure-of-iec-62443-series\/#primaryimage","url":"https:\/\/www.gt-engineering.it\/wp-content\/uploads\/2026\/02\/Immagine-2026-2.png","contentUrl":"https:\/\/www.gt-engineering.it\/wp-content\/uploads\/2026\/02\/Immagine-2026-2.png","width":712,"height":520,"caption":"Represents the structure of the IEC 62443 Series"},{"@type":"BreadcrumbList","@id":"https:\/\/www.gt-engineering.it\/en\/technical-standards\/en-iec-standards\/iec-62443-series\/structure-of-iec-62443-series\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/www.gt-engineering.it\/en\/"},{"@type":"ListItem","position":2,"name":"Technical standards","item":"https:\/\/www.gt-engineering.it\/en\/normative-tecniche\/"},{"@type":"ListItem","position":3,"name":"EN IEC Standards","item":"https:\/\/www.gt-engineering.it\/en\/technical-standards\/en-iec-standards\/"},{"@type":"ListItem","position":4,"name":"IEC 62443 Series","item":"https:\/\/www.gt-engineering.it\/en\/technical-standards\/en-iec-standards\/iec-62443-series\/"},{"@type":"ListItem","position":5,"name":"How is IEC 62443 Series structured?"}]},{"@type":"WebSite","@id":"https:\/\/www.gt-engineering.it\/en\/#website","url":"https:\/\/www.gt-engineering.it\/en\/","name":"Gt-Engineering","description":"bizonweb","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.gt-engineering.it\/en\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"}]}},"_links":{"self":[{"href":"https:\/\/www.gt-engineering.it\/en\/wp-json\/wp\/v2\/normativa_tecnica\/51266","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.gt-engineering.it\/en\/wp-json\/wp\/v2\/normativa_tecnica"}],"about":[{"href":"https:\/\/www.gt-engineering.it\/en\/wp-json\/wp\/v2\/types\/normativa_tecnica"}],"author":[{"embeddable":true,"href":"https:\/\/www.gt-engineering.it\/en\/wp-json\/wp\/v2\/users\/2"}],"version-history":[{"count":3,"href":"https:\/\/www.gt-engineering.it\/en\/wp-json\/wp\/v2\/normativa_tecnica\/51266\/revisions"}],"predecessor-version":[{"id":51276,"href":"https:\/\/www.gt-engineering.it\/en\/wp-json\/wp\/v2\/normativa_tecnica\/51266\/revisions\/51276"}],"up":[{"embeddable":true,"href":"https:\/\/www.gt-engineering.it\/en\/wp-json\/wp\/v2\/normativa_tecnica\/51140"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.gt-engineering.it\/en\/wp-json\/wp\/v2\/media\/51173"}],"wp:attachment":[{"href":"https:\/\/www.gt-engineering.it\/en\/wp-json\/wp\/v2\/media?parent=51266"}],"wp:term":[{"taxonomy":"tipologia_normativa","embeddable":true,"href":"https:\/\/www.gt-engineering.it\/en\/wp-json\/wp\/v2\/normative-tecniche?post=51266"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}