{"id":39948,"date":"2023-06-12T09:23:39","date_gmt":"2023-06-12T08:23:39","guid":{"rendered":"https:\/\/www.gt-engineering.it\/?post_type=normativa_tecnica&#038;p=39948"},"modified":"2023-08-11T09:15:29","modified_gmt":"2023-08-11T08:15:29","slug":"niveaux-de-securite","status":"publish","type":"normativa_tecnica","link":"https:\/\/www.gt-engineering.it\/fr\/reglements-techniques\/normes-iec\/iec-ts-63074-2023-aspects-de-securite-lies-a-la-securite-fonctionnelle\/niveaux-de-securite\/","title":{"rendered":"Niveaux de s\u00e9curit\u00e9"},"content":{"rendered":"\n\n    \n        <section\n            data-name=\"Contenuto testuale con immagine\"\n            class=\"bow-gte-testo-media u-spacer-base\"\n            id=\"\"\n        >\n            \n<div class=\"o-text-media px-side-spacer sm:px-side-spacer-sm lg:px-side-spacer-tablet 2xl:px-side-spacer-desktop flex flex-wrap items-start md:block\">\n\n    \n        \n                    <div\n                class=\"h-auto mb-6 md:mb-4 lg:mb-8 xl:mb-9 float-left mr-6 md:mr-4 lg:mr-8 xl:mr-9  overflow-hidden shadow-content-image w-full md:w-1\/3\"\n            >\n                \r\n\r\n    \r\n        \r\n            \r\n                \r\n                    <picture\r\n                        class=\"\"\r\n                                            >\r\n                                                                                                        <source\r\n                                media=\"(max-width: 150px)\"\r\n                                width=\"150\"\r\n                                height=\"150\"\r\n                                srcset=\"https:\/\/www.gt-engineering.it\/wp-content\/uploads\/2023\/06\/shutterstock_25760206-150x150.jpg.webp\"\r\n                                type=\"image\/webp\"\r\n                            \/>\r\n                                                                                <source\r\n                                media=\"(max-width: 244px)\"\r\n                                width=\"244\"\r\n                                height=\"300\"\r\n                                srcset=\"https:\/\/www.gt-engineering.it\/wp-content\/uploads\/2023\/06\/shutterstock_25760206-244x300.jpg.webp\"\r\n                                type=\"image\/webp\"\r\n                            \/>\r\n                                                                                <source\r\n                                media=\"(max-width: 768px)\"\r\n                                width=\"768\"\r\n                                height=\"942\"\r\n                                srcset=\"https:\/\/www.gt-engineering.it\/wp-content\/uploads\/2023\/06\/shutterstock_25760206-768x942.jpg.webp\"\r\n                                type=\"image\/webp\"\r\n                            \/>\r\n                                                                                <source\r\n                                media=\"(max-width: 835px)\"\r\n                                width=\"835\"\r\n                                height=\"1024\"\r\n                                srcset=\"https:\/\/www.gt-engineering.it\/wp-content\/uploads\/2023\/06\/shutterstock_25760206-835x1024.jpg.webp\"\r\n                                type=\"image\/webp\"\r\n                            \/>\r\n                                                                            <img\r\n                            class=\"a-image transparent border-image h-auto  w-full\"\r\n                                                        srcset=\"https:\/\/www.gt-engineering.it\/wp-content\/uploads\/2023\/06\/shutterstock_25760206.jpg.webp\"\r\n                                                        title=\"shutterstock_25760206\"\r\n                                                        type=\"image\/webp\"\r\n                        \/>\r\n                    <\/picture>\r\n\r\n                \r\n\r\n                    \r\n    \r\n            <\/div>\n        \n                    <div class=\"relative w-full\">\n                \n<div class=\"a-text font-text text-base normal mt-8 first:mt-0 space-y-4\">\n    <p>La IEC 62443-3-3 d\u00e9finit le niveau de s\u00e9curit\u00e9 (SL) comme suit :<\/p>\n<p>&nbsp;<\/p>\n<p>[IEC 62443-3-3 : 2013] <em><strong>3.1.38 niveau de s\u00e9curit\u00e9<\/strong>. Mesure de confiance selon laquelle l&rsquo;IACS est exempt de vuln\u00e9rabilit\u00e9s et fonctionne de la mani\u00e8re pr\u00e9vue.<\/em><\/p>\n<p>&nbsp;<\/p>\n<p>Les quatre niveaux de s\u00e9curit\u00e9 associ\u00e9s sont d\u00e9finis comme suit :<\/p>\n<ul>\n<li>SL 1 &#8211; Emp\u00eacher la divulgation non autoris\u00e9e d&rsquo;informations par \u00e9coute ou exposition occasionnelle.<\/li>\n<li>SL 2 &#8211; Emp\u00eacher la divulgation non autoris\u00e9e d&rsquo;informations \u00e0 une entit\u00e9 qui les recherche activement en utilisant des moyens simples, avec de faibles ressources, des comp\u00e9tences g\u00e9n\u00e9riques et une faible motivation.<\/li>\n<li>SL 3 &#8211; Emp\u00eacher la divulgation non autoris\u00e9e d&rsquo;informations \u00e0 une entit\u00e9 qui les recherche activement en utilisant des moyens sophistiqu\u00e9s avec des ressources mod\u00e9r\u00e9es, des comp\u00e9tences sp\u00e9cifiques au SIGC et une motivation mod\u00e9r\u00e9e.<\/li>\n<li>SL 4 &#8211; Emp\u00eacher la divulgation non autoris\u00e9e d&rsquo;informations \u00e0 une entit\u00e9 qui les recherche activement en utilisant des moyens sophistiqu\u00e9s avec des ressources \u00e9tendues, des comp\u00e9tences sp\u00e9cifiques au SIGC et une motivation \u00e9lev\u00e9e.<\/li>\n<\/ul>\n<p>Ces attributs SL d\u00e9montrent un lien essentiel avec le concept de niveau d&rsquo;int\u00e9grit\u00e9 de la s\u00e9curit\u00e9 (SIL) introduit dans les normes de s\u00e9curit\u00e9 fonctionnelle IEC 61511, en ce sens que chaque niveau de s\u00e9curit\u00e9 suivant repr\u00e9sente une r\u00e9duction du risque d&rsquo;un ordre de grandeur. Les exigences sp\u00e9cifiques pour atteindre un SL ou un SIL d\u00e9termin\u00e9 sont tr\u00e8s diff\u00e9rentes.<\/p>\n<\/div>            <\/div>\n        \n        \n                <div class=\"clear-both\"><\/div>\n        \n\n    <\/div>\n        <\/section>\n\n    \n","protected":false},"excerpt":{"rendered":"<p>La IEC 62443-3-3 d\u00e9finit le niveau de s\u00e9curit\u00e9 (SL) comme suit :<\/p>\n","protected":false},"author":182,"featured_media":42010,"parent":36133,"menu_order":3,"template":"","meta":{"_acf_changed":false,"footnotes":""},"normative-tecniche":[165],"class_list":["post-39948","normativa_tecnica","type-normativa_tecnica","status-publish","has-post-thumbnail","hentry","tipologia_normativa-normes-iec"],"acf":{"sottotitolo":"","allegati":null},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Niveaux de s\u00e9curit\u00e9 - Gt-Engineering<\/title>\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\/fr\/reglements-techniques\/normes-iec\/iec-ts-63074-2023-aspects-de-securite-lies-a-la-securite-fonctionnelle\/niveaux-de-securite\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Niveaux de s\u00e9curit\u00e9 - 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