{"id":187020,"date":"2026-04-20T13:09:55","date_gmt":"2026-04-20T11:09:55","guid":{"rendered":"https:\/\/factorialhr.com\/blog\/?p=187020"},"modified":"2026-04-21T18:56:50","modified_gmt":"2026-04-21T16:56:50","slug":"entreprises-essentielles-vs-importantes-nis2","status":"publish","type":"post","link":"https:\/\/factorial.fr\/blog\/entreprises-essentielles-vs-importantes-nis2\/","title":{"rendered":"Entreprises essentielles vs importantes dans la directive NIS2"},"content":{"rendered":"<p><span style=\"font-weight: 400;\">La directive NIS2 marque un tournant d\u00e9cisif dans les obligations de cybers\u00e9curit\u00e9 pour des milliers d&rsquo;entreprises en Europe. Bien que toutes les organisations concern\u00e9es doivent respecter un niveau de protection \u00e9lev\u00e9 et des mesures de s\u00e9curit\u00e9 uniformes<strong>, la r\u00e9glementation introduit une distinction cl\u00e9 entre les <\/strong><\/span><strong>entit\u00e9s essentielles et les entit\u00e9s importantes<\/strong><span style=\"font-weight: 400;\">.\u00a0<\/span>Cette classification, encadr\u00e9e en France sous la stricte supervision de l&rsquo;ANSSI, n&rsquo;affecte pas tant les mesures techniques \u00e0 mettre en \u0153uvre, mais influe directement sur le niveau de contr\u00f4le de l&rsquo;\u00c9tat et sur le montant des \u00e9ventuelles sanctions.<\/p>\n<p><span style=\"font-weight: 400;\">Comprendre cette diff\u00e9rence est fondamental pour <strong>anticiper, \u00e9valuer les risques et \u00e9viter tout manquement au sein du cadre l\u00e9gal fran\u00e7ais<\/strong>.\u00a0<\/span><span style=\"font-weight: 400;\">Dans cet article, nous vous expliquons de mani\u00e8re claire <\/span><b>ce que signifie chaque cat\u00e9gorie<\/b><span style=\"font-weight: 400;\">, en quoi elles diff\u00e8rent et comment savoir dans laquelle s&rsquo;inscrit votre organisation.<\/span><\/p>\n<h2><b>Qu&rsquo;est-ce que la directive NIS2 et pourquoi classifie-t-elle les entreprises ?<\/b><\/h2>\n<p><span style=\"font-weight: 400;\">La <a href=\"https:\/\/factorial.fr\/blog\/nis2-france\/\">directive NIS2<\/a> est la nouvelle r\u00e9glementation de l&rsquo;Union europ\u00e9enne qui, suite \u00e0 sa transposition dans la l\u00e9gislation nationale fran\u00e7aise,<\/span><b> renforce les exigences en mati\u00e8re de cybers\u00e9curit\u00e9<\/b><span style=\"font-weight: 400;\"> pour les entreprises qui fournissent des services critiques ou essentiels \u00e0 la soci\u00e9t\u00e9 et \u00e0 l&rsquo;\u00e9conomie. Son objectif est d&rsquo;am\u00e9liorer la r\u00e9silience face aux cyberattaques et de garantir une r\u00e9ponse coordonn\u00e9e en cas d&rsquo;incident, dans le cadre op\u00e9rationnel d\u00e9fini par l&rsquo;ANSSI.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Afin d&rsquo;appliquer ces obligations de mani\u00e8re efficace et proportionn\u00e9e,<\/span><b> la r\u00e9glementation classifie les organisations en fonction de leur niveau de criticit\u00e9 et de leur impact potentiel<\/b><span style=\"font-weight: 400;\">. En France, cette distinction est cl\u00e9 pour s&rsquo;assurer que l&rsquo;effort de mise en conformit\u00e9 soit coh\u00e9rent avec le risque que chaque entit\u00e9 repr\u00e9sente pour la continuit\u00e9 de l&rsquo;\u00c9tat et de l&rsquo;\u00e9conomie.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">C&rsquo;est pourquoi la directive NIS2 fait la distinction entre les <\/span><b>Entit\u00e9s Essentielles<\/b><span style=\"font-weight: 400;\"> (EE) et les <\/span><b>Entit\u00e9s Importantes<\/b><span style=\"font-weight: 400;\"> (EI). Cette classification s&rsquo;effectue en fonction de facteurs tels que le secteur d&rsquo;activit\u00e9, la taille de l&rsquo;organisation (effectifs et chiffre d&rsquo;affaires), la d\u00e9pendance aux syst\u00e8mes num\u00e9riques ou encore les cons\u00e9quences qu&rsquo;aurait une interruption de son activit\u00e9 sur la souverainet\u00e9 et la s\u00e9curit\u00e9 du pays.<\/span><\/p>\n<h2><b>\u00a0Qu&rsquo;est-ce qu&rsquo;une entreprise essentielle selon la directive NIS2 ?<\/b><\/h2>\n<p><span style=\"font-weight: 400;\">Une entit\u00e9 essentielle selon la directive NIS2 est une organisation qui<\/span><b> op\u00e8re dans des secteurs consid\u00e9r\u00e9s comme critiques pour le fonctionnement de la soci\u00e9t\u00e9 et de l&rsquo;\u00e9conomie<\/b><span style=\"font-weight: 400;\">, et dont l&rsquo;interruption pourrait avoir un impact significatif sur les services de base, la s\u00e9curit\u00e9 publique ou la stabilit\u00e9 du pays. En France, l&rsquo;ANSSI est charg\u00e9e de veiller \u00e0 ce que ces entit\u00e9s respectent les normes de r\u00e9silience les plus strictes.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Pour qu&rsquo;une organisation soit consid\u00e9r\u00e9e comme une Entit\u00e9 Essentielle (EE), elle doit r\u00e9pondre aux crit\u00e8res suivants :<\/span><\/p>\n<h3>1. Op\u00e9rer dans un secteur de \u00ab haute criticit\u00e9 \u00bb<\/h3>\n<p>Les secteurs consid\u00e9r\u00e9s comme de \u00ab haute criticit\u00e9 \u00bb en France correspondent \u00e0 l&rsquo;Annexe I de la directive :<\/p>\n<ul>\n<li>\n<p data-path-to-node=\"9,0,1\"><span data-path-to-node=\"9,0,1,0\"><b data-path-to-node=\"9,0,1,0\" data-index-in-node=\"0\"><span class=\"citation-435\">\u00c9nergie :<\/span><\/b><span class=\"citation-435\"> \u00e9lectricit\u00e9, r\u00e9seaux de chaleur et de froid urbains, p\u00e9trole, gaz et hydrog\u00e8ne.<\/span><\/span><\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"9,0,1\"><b data-path-to-node=\"9,1,1,0\" data-index-in-node=\"0\"><span class=\"citation-434\">Transports :<\/span><\/b><span class=\"citation-434\"> a\u00e9rien, ferroviaire, maritime et routier.<\/span><\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"9,0,1\"><b data-path-to-node=\"9,2,1,0\" data-index-in-node=\"0\"><span class=\"citation-433\">Banque :<\/span><\/b><span class=\"citation-433\"> \u00e9tablissements de cr\u00e9dit.<\/span><\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"9,0,1\"><b data-path-to-node=\"9,3,1,0\" data-index-in-node=\"0\"><span class=\"citation-432\">Infrastructures des march\u00e9s financiers :<\/span><\/b><span class=\"citation-432\"> exploitants de plates-formes de n\u00e9gociation, syst\u00e8mes de r\u00e8glement et contreparties centrales.<\/span><\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"9,0,1\"><b data-path-to-node=\"9,4,1,0\" data-index-in-node=\"0\"><span class=\"citation-431\">Sant\u00e9 :<\/span><\/b><span class=\"citation-431\"> prestataires de soins de sant\u00e9, laboratoires de r\u00e9f\u00e9rence, activit\u00e9s de recherche et d\u00e9veloppement pharmaceutique et fabricants de m\u00e9dicaments.<\/span><\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"9,0,1\"><b data-path-to-node=\"9,5,1,0\" data-index-in-node=\"0\"><span class=\"citation-430\">Eau potable :<\/span><\/b><span class=\"citation-430\"> fournisseurs et distributeurs responsables de l&rsquo;approvisionnement.<\/span><\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"9,0,1\"><b data-path-to-node=\"9,6,1,0\" data-index-in-node=\"0\"><span class=\"citation-429\">Eaux us\u00e9es :<\/span><\/b><span class=\"citation-429\"> entreprises charg\u00e9es de la collecte, de l&rsquo;\u00e9limination ou du traitement.<\/span><\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"9,0,1\"><b data-path-to-node=\"9,7,1,0\" data-index-in-node=\"0\"><span class=\"citation-428\">Infrastructure num\u00e9rique :<\/span><\/b><span class=\"citation-428\"> fournisseurs de services cloud, centres de donn\u00e9es, r\u00e9seaux de t\u00e9l\u00e9communications, fournisseurs de services DNS et registres de noms de domaine.<\/span><\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"9,0,1\"><b data-path-to-node=\"9,8,1,0\" data-index-in-node=\"0\"><span class=\"citation-427\">Gestion des services TIC :<\/span><\/b><span class=\"citation-427\"> fournisseurs de services g\u00e9r\u00e9s (MSP) et fournisseurs de services de s\u00e9curit\u00e9 g\u00e9r\u00e9s (MSSP).<\/span><\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"9,0,1\"><b data-path-to-node=\"9,9,1,0\" data-index-in-node=\"0\"><span class=\"citation-426\">Administration publique :<\/span><\/b><span class=\"citation-426\"> entit\u00e9s de l&rsquo;administration centrale et r\u00e9gionale.<\/span><\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"9,0,1\"><b data-path-to-node=\"9,10,1,0\" data-index-in-node=\"0\"><span class=\"citation-425\">Espace :<\/span><\/b><span class=\"citation-425\"> exploitants d&rsquo;infrastructures terrestres qui soutiennent la fourniture de services spatiaux.<\/span><\/p>\n<\/li>\n<\/ul>\n<h3><span data-path-to-node=\"10,1\"><span class=\"citation-424\">2. Taille de l&rsquo;organisation<\/span><\/span><\/h3>\n<p data-path-to-node=\"11\"><span data-path-to-node=\"11,1\"><span class=\"citation-423\">Pour qu&rsquo;une entreprise soit consid\u00e9r\u00e9e comme essentielle, elle doit remplir l&rsquo;une des conditions suivantes :<\/span><\/span><\/p>\n<ul data-path-to-node=\"12\">\n<li>\n<p data-path-to-node=\"12,0,0\"><span data-path-to-node=\"12,0,0,1\"><span class=\"citation-422\">Avoir <\/span><b data-path-to-node=\"12,0,0,1\" data-index-in-node=\"6\"><span class=\"citation-422\">plus de 250 employ\u00e9s<\/span><\/b><span class=\"citation-422\">, ou<\/span><\/span><\/p>\n<\/li>\n<li>\n<p id=\"p-rc_ef900e4c38e5a7e2-142\" data-path-to-node=\"12,1,0\"><span data-path-to-node=\"12,1,0,1\"><span class=\"citation-421\">Avoir un chiffre d&rsquo;<\/span><b data-path-to-node=\"12,1,0,1\" data-index-in-node=\"19\"><span class=\"citation-421\">affaires annuel sup\u00e9rieur \u00e0 50 millions d&rsquo;euros<\/span><\/b><span class=\"citation-421\"> (ou un bilan sup\u00e9rieur \u00e0 43 millions).<\/span><\/span><\/p>\n<\/li>\n<\/ul>\n<h3>3. Op\u00e9rer dans l&rsquo;Union europ\u00e9enne<\/h3>\n<p><span data-path-to-node=\"14,1\"><span class=\"citation-419\">L&rsquo;entreprise doit \u00eatre \u00e9tablie au sein de l&rsquo;Union europ\u00e9enne. <\/span><\/span><span data-path-to-node=\"14,4\"><span class=\"citation-418\">Dans le cas de la France, la r\u00e9glementation concerne toute organisation qui fournit ces services critiques sur le sol fran\u00e7ais, peu importe o\u00f9 se trouve son si\u00e8ge social, d\u00e8s lors qu&rsquo;elle g\u00e8re des infrastructures essentielles pour les citoyens ou les entreprises en France.<\/span><\/span><\/p>\n<h4 data-path-to-node=\"15\"><span data-path-to-node=\"15,1\"><span class=\"citation-417\">Exemple d&rsquo;entreprise essentielle en France<\/span><\/span><\/h4>\n<ul data-path-to-node=\"16\">\n<li>\n<p data-path-to-node=\"16,0,1\"><span data-path-to-node=\"16,0,1,0\"><b data-path-to-node=\"16,0,1,0\" data-index-in-node=\"0\"><span class=\"citation-416\">Entreprise :<\/span><\/b><span class=\"citation-416\"> France\u00c9nergie Distribution.<\/span><\/span><\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"16,0,1\"><b data-path-to-node=\"16,1,1,0\" data-index-in-node=\"0\"><span class=\"citation-415\">Secteur :<\/span><\/b><span class=\"citation-415\"> \u00c9nergie (Distribution d&rsquo;\u00e9lectricit\u00e9).<\/span><\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"16,0,1\"><b data-path-to-node=\"16,2,1,0\" data-index-in-node=\"0\"><span class=\"citation-414\">Taille :<\/span><\/b><span class=\"citation-414\"> 600 employ\u00e9s et 150 millions d&rsquo;euros de chiffre d&rsquo;affaires.<\/span><\/p>\n<\/li>\n<\/ul>\n<p><span data-path-to-node=\"17,0\"><strong>Pourquoi est-elle consid\u00e9r\u00e9e comme une entit\u00e9 essentielle ?<\/strong> <\/span><span data-path-to-node=\"17,2\"><span class=\"citation-413\">Parce qu&rsquo;elle op\u00e8re dans un secteur hautement critique (l&rsquo;\u00e9nergie) et d\u00e9passe le seuil de grande entreprise d\u00e9fini par l&rsquo;ANSSI et la r\u00e9glementation europ\u00e9enne (plus de 250 employ\u00e9s et plus de 50 M\u20ac).<\/span><\/span><\/p>\n<h2>Qu&rsquo;est-ce qu&rsquo;une entreprise importante selon la directive NIS2 ?<\/h2>\n<p><span data-path-to-node=\"19,1\"><span class=\"citation-411\">Une entreprise importante (appel\u00e9e en France Entit\u00e9 Importante ou EI) selon la directive NIS2 est <strong>une organisation qui op\u00e8re dans des secteurs critiques pour la soci\u00e9t\u00e9 et l&rsquo;\u00e9conomie<\/strong>, mais dont l&rsquo;interruption aurait un impact moindre que celui des entit\u00e9s essentielles. <\/span><\/span><span data-path-to-node=\"19,4\"><span class=\"citation-410\">Ces entreprises restent soumises aux m\u00eames obligations de cybers\u00e9curit\u00e9, mais avec un r\u00e9gime de supervision diff\u00e9rent : en France, l&rsquo;ANSSI applique une supervision r\u00e9active (dite ex-post) plut\u00f4t que proactive. <\/span><\/span><\/p>\n<p><span data-path-to-node=\"19,7\"><span class=\"citation-409\">Pour qu&rsquo;une entreprise soit consid\u00e9r\u00e9e comme importante sur le territoire fran\u00e7ais, elle doit r\u00e9pondre aux crit\u00e8res suivants : <\/span><\/span><\/p>\n<h3 class=\"source-inline-chip-container ng-star-inserted\">1. Op\u00e9rer dans un secteur de \u00ab haute criticit\u00e9 \u00bb ou d&rsquo;\u00ab autres secteurs critiques \u00bb<\/h3>\n<p>Une organisation entre dans cette cat\u00e9gorie dans deux cas de figure :<\/p>\n<ul>\n<li>\n<p data-path-to-node=\"22,0,0\"><span data-path-to-node=\"22,0,0,1\"><span class=\"citation-406\">Si elle op\u00e8re dans un secteur de \u00ab<strong> haute criticit\u00e9<\/strong> \u00bb (vus pr\u00e9c\u00e9demment, comme l&rsquo;\u00e9nergie ou la sant\u00e9) mais qu&rsquo;elle a la taille d&rsquo;<strong>une entreprise de taille moyenne<\/strong>.<\/span><\/span><\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"22,1,0\"><span data-path-to-node=\"22,1,0,0\">Si elle op\u00e8re dans les \u00ab<strong> autres secteurs critiques<\/strong> \u00bb, peu importe qu&rsquo;elle soit de taille moyenne ou grande. <\/span><span data-path-to-node=\"22,1,0,2\"><span class=\"citation-405\">Ces secteurs sont les suivants :<\/span><\/span><\/p>\n<ul data-path-to-node=\"22,1,1\">\n<li>\n<p data-path-to-node=\"22,1,1,0,1\"><span data-path-to-node=\"22,1,1,0,1,0\"><b data-path-to-node=\"22,1,1,0,1,0\" data-index-in-node=\"0\"><span class=\"citation-404\">Services postaux et d&rsquo;exp\u00e9dition<\/span><\/b><span class=\"citation-404\">.<\/span><\/span><\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"22,1,1,0,1\"><b data-path-to-node=\"22,1,1,1,1,0\" data-index-in-node=\"0\"><span class=\"citation-403\">Gestion des d\u00e9chets<\/span><\/b><span class=\"citation-403\">.<\/span><\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"22,1,1,0,1\"><b data-path-to-node=\"22,1,1,2,1,0\" data-index-in-node=\"0\"><span class=\"citation-402\">Industrie chimique :<\/span><\/b><span class=\"citation-402\"> fabrication, production et distribution de substances chimiques.<\/span><\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"22,1,1,0,1\"><b data-path-to-node=\"22,1,1,3,1,0\" data-index-in-node=\"0\"><span class=\"citation-401\">Alimentation :<\/span><\/b><span class=\"citation-401\"> production, transformation et distribution en gros de denr\u00e9es alimentaires (secteur agroalimentaire).<\/span><\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"22,1,1,0,1\"><b data-path-to-node=\"22,1,1,4,1,0\" data-index-in-node=\"0\"><span class=\"citation-400\">Fabrication :<\/span><\/b><span class=\"citation-400\"> inclut les dispositifs m\u00e9dicaux, les produits informatiques, \u00e9lectroniques, les machines et le mat\u00e9riel de transport.<\/span><\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"22,1,1,0,1\"><b data-path-to-node=\"22,1,1,5,1,0\" data-index-in-node=\"0\"><span class=\"citation-399\">Fournisseurs num\u00e9riques :<\/span><\/b><span class=\"citation-399\"> places de march\u00e9 en ligne (<\/span><i data-path-to-node=\"22,1,1,5,1,0\" data-index-in-node=\"53\"><span class=\"citation-399\">marketplaces<\/span><\/i><span class=\"citation-399\">), moteurs de recherche et plateformes de r\u00e9seaux sociaux.<\/span><\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"22,1,1,0,1\"><b data-path-to-node=\"22,1,1,6,1,0\" data-index-in-node=\"0\"><span class=\"citation-398\">Recherche :<\/span><\/b><span class=\"citation-398\"> organismes et instituts de recherche.<\/span><\/p>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h3>2. Taille de l&rsquo;organisation<\/h3>\n<p><span data-path-to-node=\"24,1\"><span class=\"citation-396\">En r\u00e8gle g\u00e9n\u00e9rale, l&rsquo;ANSSI consid\u00e8re comme entit\u00e9s importantes celles qui respectent les seuils europ\u00e9ens de la moyenne entreprise : <\/span><\/span><\/p>\n<ul>\n<li>\n<p data-path-to-node=\"25,0,0\"><span data-path-to-node=\"25,0,0,1\"><span class=\"citation-395\">Avoir entre <\/span><b data-path-to-node=\"25,0,0,1\" data-index-in-node=\"12\"><span class=\"citation-395\">50 et 249 employ\u00e9s<\/span><\/b><span class=\"citation-395\">, ou<\/span><\/span><\/p>\n<\/li>\n<li>\n<p id=\"p-rc_ef900e4c38e5a7e2-166\" data-path-to-node=\"25,1,0\"><span data-path-to-node=\"25,1,0,1\"><span class=\"citation-394\">Avoir un chiffre d&rsquo;<\/span><b data-path-to-node=\"25,1,0,1\" data-index-in-node=\"19\"><span class=\"citation-394\">affaires annuel ou un bilan total compris entre 10 et 50 millions<\/span><\/b><span class=\"citation-394\"> d&rsquo;euros. <\/span><\/span><\/p>\n<\/li>\n<\/ul>\n<h3><span data-path-to-node=\"26,1\"><span class=\"citation-393\">3. Op\u00e9rer dans l&rsquo;Union europ\u00e9enne<\/span><\/span><\/h3>\n<p><span data-path-to-node=\"27,1\"><span class=\"citation-392\">Tout comme pour les entit\u00e9s essentielles, ce cadre r\u00e9glementaire ne se limite pas aux fronti\u00e8res physiques. <\/span><\/span><span data-path-to-node=\"27,4\"><span class=\"citation-391\"><strong>Une organisation est consid\u00e9r\u00e9e comme \u00ab importante \u00bb si son activit\u00e9 a un impact sur le march\u00e9 fran\u00e7ais<\/strong>. <\/span><\/span><\/p>\n<p><span data-path-to-node=\"27,7\"><span class=\"citation-390\">Cela inclut les entreprises \u00e9trang\u00e8res qui fournissent des services num\u00e9riques en France, lesquelles sont tenues de d\u00e9signer un repr\u00e9sentant l\u00e9gal dans le pays pour faire office d&rsquo;agent de liaison avec l&rsquo;ANSSI.<\/span><\/span><\/p>\n<h4>Exemple d&rsquo;entreprise importante<\/h4>\n<ul>\n<li>\n<p data-path-to-node=\"29,0,1\"><span data-path-to-node=\"29,0,1,0\"><b data-path-to-node=\"29,0,1,0\" data-index-in-node=\"0\"><span class=\"citation-388\">Entreprise :<\/span><\/b><span class=\"citation-388\"> TransLog France SAS.<\/span><\/span><\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"29,0,1\"><b data-path-to-node=\"29,1,1,0\" data-index-in-node=\"0\"><span class=\"citation-387\">Secteur :<\/span><\/b><span class=\"citation-387\"> Transports (Services de logistique et de messagerie r\u00e9gionale).<\/span><\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"29,0,1\"><b data-path-to-node=\"29,2,1,0\" data-index-in-node=\"0\"><span class=\"citation-386\">Taille :<\/span><\/b><span class=\"citation-386\"> 120 employ\u00e9s et 20 millions d&rsquo;euros de chiffre d&rsquo;affaires.<\/span><\/p>\n<\/li>\n<\/ul>\n<p><strong>Pourquoi est-elle consid\u00e9r\u00e9e comme une entreprise importante ? <\/strong><span data-path-to-node=\"30,2\"><span class=\"citation-385\">Parce qu&rsquo;elle op\u00e8re dans un secteur pertinent (transports\/messagerie) et qu&rsquo;elle remplit les crit\u00e8res de taille de l&rsquo;ANSSI pour les entit\u00e9s importantes (entre 50 et 250 employ\u00e9s), sans atteindre les seuils de chiffre d&rsquo;affaires ou de volume qui la rendraient \u00ab\u00a0essentielle\u00a0\u00bb.<\/span><\/span><\/p>\n<p><span style=\"font-weight: 400;\">\ud83d\udccc D\u00e9couvrez <a href=\"https:\/\/factorial.fr\/blog\/entreprises-concernees-nis2\/\">qui est concern\u00e9 par la directive NIS2 en France<\/a>.<\/span><\/p>\n<h2>Principales diff\u00e9rences entre les entreprises essentielles et importantes<\/h2>\n<p><span data-path-to-node=\"32,1\"><span class=\"citation-383\">La distinction entre ces deux cat\u00e9gories est la cl\u00e9 de vo\u00fbte de la directive NIS2. <\/span><\/span><span data-path-to-node=\"32,4\"><span class=\"citation-382\">Bien que toutes deux doivent respecter les m\u00eames mesures de gestion des risques,<strong> l&rsquo;\u00ab intensit\u00e9 \u00bb de la surveillance exerc\u00e9e par l&rsquo;ANSSI et le poids des sanctions varient consid\u00e9rablement afin de s&rsquo;adapter \u00e0 la capacit\u00e9 de chaque organisation<\/strong>.<\/span><\/span><\/p>\n<table data-path-to-node=\"33\">\n<thead>\n<tr>\n<td><strong>Caract\u00e9ristique <\/strong><\/td>\n<td><strong>Entit\u00e9 Essentielle (EE) <\/strong><\/td>\n<td><strong>Entit\u00e9 Importante (EI) <\/strong><\/td>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\n<p id=\"p-rc_ef900e4c38e5a7e2-179\" data-path-to-node=\"33,1,0,0\"><span data-path-to-node=\"33,1,0,0,1\"><span class=\"citation-378\">Secteurs concern\u00e9s <\/span><\/span><\/p>\n<div class=\"source-inline-chip-container ng-star-inserted\"><\/div>\n<p>&nbsp;<\/td>\n<td>\n<p id=\"p-rc_ef900e4c38e5a7e2-180\" data-path-to-node=\"33,1,1,0\"><span data-path-to-node=\"33,1,1,0,1\"><span class=\"citation-377\">Uniquement les secteurs de <\/span><b data-path-to-node=\"33,1,1,0,1\" data-index-in-node=\"27\"><span class=\"citation-377\">Haute Criticit\u00e9<\/span><\/b><span class=\"citation-377\"> (Annexe 1). <\/span><\/span><\/p>\n<div class=\"source-inline-chip-container ng-star-inserted\"><\/div>\n<p>&nbsp;<\/td>\n<td>\n<p id=\"p-rc_ef900e4c38e5a7e2-181\" data-path-to-node=\"33,1,2,0\"><span data-path-to-node=\"33,1,2,0,1\"><span class=\"citation-376\">Secteurs de <\/span><b data-path-to-node=\"33,1,2,0,1\" data-index-in-node=\"12\"><span class=\"citation-376\">Haute Criticit\u00e9<\/span><\/b><span class=\"citation-376\"> (Annexe 1) <\/span><b data-path-to-node=\"33,1,2,0,1\" data-index-in-node=\"39\"><span class=\"citation-376\">ET<\/span><\/b><span class=\"citation-376\"> Autres Secteurs Critiques (Annexe 2). <\/span><\/span><\/p>\n<div class=\"source-inline-chip-container ng-star-inserted\"><\/div>\n<p>&nbsp;<\/td>\n<\/tr>\n<tr>\n<td>\n<p id=\"p-rc_ef900e4c38e5a7e2-182\" data-path-to-node=\"33,2,0,0\"><span data-path-to-node=\"33,2,0,0,1\"><span class=\"citation-375\">Taille de l&rsquo;entreprise <\/span><\/span><\/p>\n<div class=\"source-inline-chip-container ng-star-inserted\"><\/div>\n<p>&nbsp;<\/td>\n<td>\n<p id=\"p-rc_ef900e4c38e5a7e2-183\" data-path-to-node=\"33,2,1,1\"><span data-path-to-node=\"33,2,1,1,0\"><b data-path-to-node=\"33,2,1,1,0\" data-index-in-node=\"0\"><span class=\"citation-374\">Grandes entreprises<\/span><\/b><span class=\"citation-374\"> (&gt;250 employ\u00e9s ou &gt;50 M\u20ac de facturation). <\/span><\/span><\/p>\n<div class=\"source-inline-chip-container ng-star-inserted\"><\/div>\n<p>&nbsp;<\/td>\n<td>\n<p id=\"p-rc_ef900e4c38e5a7e2-184\" data-path-to-node=\"33,2,2,1\"><span data-path-to-node=\"33,2,2,1,0\"><b data-path-to-node=\"33,2,2,1,0\" data-index-in-node=\"0\"><span class=\"citation-373\">Moyennes entreprises<\/span><\/b><span class=\"citation-373\"> (50-249 emp.) dans n&rsquo;importe quel secteur <\/span><b data-path-to-node=\"33,2,2,1,0\" data-index-in-node=\"63\"><span class=\"citation-373\">OU Grandes<\/span><\/b><span class=\"citation-373\"> dans les secteurs de l&rsquo;Annexe 2. <\/span><\/span><\/p>\n<div class=\"source-inline-chip-container ng-star-inserted\"><\/div>\n<p>&nbsp;<\/td>\n<\/tr>\n<tr>\n<td>\n<p id=\"p-rc_ef900e4c38e5a7e2-185\" data-path-to-node=\"33,3,0,0\"><span data-path-to-node=\"33,3,0,0,1\"><span class=\"citation-372\">Supervision <\/span><\/span><\/p>\n<div class=\"source-inline-chip-container ng-star-inserted\"><\/div>\n<p>&nbsp;<\/td>\n<td>\n<p id=\"p-rc_ef900e4c38e5a7e2-186\" data-path-to-node=\"33,3,1,1\"><span data-path-to-node=\"33,3,1,1,0\"><b data-path-to-node=\"33,3,1,1,0\" data-index-in-node=\"0\"><span class=\"citation-371\">Ex-ante (Proactive) :<\/span><\/b><span class=\"citation-371\"> L&rsquo;ANSSI peut r\u00e9aliser des audits et des contr\u00f4les d&rsquo;office \u00e0 tout moment. <\/span><\/span><\/p>\n<div class=\"source-inline-chip-container ng-star-inserted\"><\/div>\n<p>&nbsp;<\/td>\n<td>\n<p id=\"p-rc_ef900e4c38e5a7e2-187\" data-path-to-node=\"33,3,2,1\"><span data-path-to-node=\"33,3,2,1,0\"><b data-path-to-node=\"33,3,2,1,0\" data-index-in-node=\"0\"><span class=\"citation-370\">Ex-post (R\u00e9active) :<\/span><\/b><span class=\"citation-370\"> Les inspections n&rsquo;ont lieu qu&rsquo;en cas d&rsquo;incident grave ou de signes \u00e9vidents de non-conformit\u00e9. <\/span><\/span><\/p>\n<div class=\"source-inline-chip-container ng-star-inserted\"><\/div>\n<p>&nbsp;<\/td>\n<\/tr>\n<tr>\n<td>\n<p id=\"p-rc_ef900e4c38e5a7e2-188\" data-path-to-node=\"33,4,0,0\"><span data-path-to-node=\"33,4,0,0,1\"><span class=\"citation-369\">Amendes maximales <\/span><\/span><\/p>\n<div class=\"source-inline-chip-container ng-star-inserted\"><\/div>\n<p>&nbsp;<\/td>\n<td>\n<p id=\"p-rc_ef900e4c38e5a7e2-189\" data-path-to-node=\"33,4,1,0\"><span data-path-to-node=\"33,4,1,0,1\"><span class=\"citation-368\">Jusqu&rsquo;\u00e0 <\/span><b data-path-to-node=\"33,4,1,0,1\" data-index-in-node=\"8\"><span class=\"citation-368\">10 millions d&rsquo;euros<\/span><\/b><span class=\"citation-368\"> ou 2 % de la facturation mondiale annuelle. <\/span><\/span><\/p>\n<div class=\"source-inline-chip-container ng-star-inserted\"><\/div>\n<p>&nbsp;<\/td>\n<td>\n<p id=\"p-rc_ef900e4c38e5a7e2-190\" data-path-to-node=\"33,4,2,0\"><span data-path-to-node=\"33,4,2,0,1\"><span class=\"citation-367\">Jusqu&rsquo;\u00e0 <\/span><b data-path-to-node=\"33,4,2,0,1\" data-index-in-node=\"8\"><span class=\"citation-367\">7 millions d&rsquo;euros<\/span><\/b><span class=\"citation-367\"> ou 1,4 % de la facturation mondiale annuelle. <\/span><\/span><\/p>\n<div class=\"source-inline-chip-container ng-star-inserted\"><\/div>\n<p>&nbsp;<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<div class=\"factorial-banner inline-banner banner-other category-nis2\"\n    data-banner-id=\"187213\"\n    data-banner-type=\"other\"\n    data-category=\"NIS2\">\n    <div class=\"banner-content\">\n        <div class=\"banner-text\">\n                            <h4>Pr\u00e9parez-vous \u00e0 NIS2 avec plus de contr\u00f4le et moins de chaos<\/h4>\n            \n                            <p>Centralisez appareils, acc\u00e8s et processus IT en un seul endroit pour r\u00e9duire les t\u00e2ches manuelles et gagner en visibilit\u00e9.<\/p>\n            \n                            <a href=\"https:\/\/factorial.fr\/nis2-factorial-it#factorial-it-demo-form-nis2\"\n                    class=\"factorial-cta-button not-prose freebie\" data-cta=\"other\" data-cta-position=\"inline-banner\">\n                    En savoir plus                <\/a>\n                    <\/div>\n\n        <div class=\"banner-image has-image\">\n            <img decoding=\"async\" src=\"https:\/\/factorialhr.com\/wp-content\/uploads\/2026\/04\/21114628\/FR-sidebar-1-nis-iso.png\" class=\"not-prose\" \/>\n        <\/div>\n    <\/div>\n<\/div>\n<h2>Obligations communes aux deux classifications<\/h2>\n<p><span data-path-to-node=\"35,1\"><span class=\"citation-365\">Qu&rsquo;une entreprise soit qualifi\u00e9e en France d&rsquo;essentielle (EE) ou d&rsquo;importante (EI), <\/span><b data-path-to-node=\"35,1\" data-index-in-node=\"84\"><span class=\"citation-365\">la directive NIS2 exige un niveau de protection \u00e9lev\u00e9 et uniforme<\/span><\/b><span class=\"citation-365\">. <\/span><\/span><span data-path-to-node=\"35,4\"><span class=\"citation-364\">Toutes les organisations concern\u00e9es doivent mettre en \u0153uvre des mesures techniques, op\u00e9rationnelles et organisationnelles pour g\u00e9rer les risques de cybers\u00e9curit\u00e9, en suivant les normes d\u00e9finies par l&rsquo;ANSSI. <\/span><\/span><\/p>\n<p><span data-path-to-node=\"35,7\"><span class=\"citation-363\">Ces obligations se divisent en trois grands blocs :<\/span><\/span><\/p>\n<h3><span data-path-to-node=\"36,1\"><span class=\"citation-362\">1. Mesures de base de gestion des risques<\/span><\/span><\/h3>\n<p data-path-to-node=\"37\"><span data-path-to-node=\"37,1\"><span class=\"citation-361\">La r\u00e9glementation instaure un \u00ab minimum obligatoire \u00bb que l&rsquo;ANSSI supervise et qui s&rsquo;aligne sur son c\u00e9l\u00e8bre Guide d&rsquo;hygi\u00e8ne informatique :<\/span><\/span><\/p>\n<ul data-path-to-node=\"38\">\n<li>\n<p data-path-to-node=\"38,0,1\"><span data-path-to-node=\"38,0,1,0\"><b data-path-to-node=\"38,0,1,0\" data-index-in-node=\"0\"><span class=\"citation-360\">Politiques d&rsquo;analyse des risques et de s\u00e9curit\u00e9 :<\/span><\/b><span class=\"citation-360\"> documenter la mani\u00e8re dont les menaces sont identifi\u00e9es et g\u00e9r\u00e9es.<\/span><\/span><\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"38,0,1\"><b data-path-to-node=\"38,1,1,0\" data-index-in-node=\"0\"><span class=\"citation-359\">Gestion des incidents :<\/span><\/b><span class=\"citation-359\"> protocoles clairs de d\u00e9tection, de r\u00e9ponse et de reprise apr\u00e8s une attaque.<\/span><\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"38,0,1\"><b data-path-to-node=\"38,2,1,0\" data-index-in-node=\"0\"><span class=\"citation-358\">Continuit\u00e9 d&rsquo;activit\u00e9 :<\/span><\/b><span class=\"citation-358\"> plans de sauvegarde (<\/span><i data-path-to-node=\"38,2,1,0\" data-index-in-node=\"45\"><span class=\"citation-358\">backups<\/span><\/i><span class=\"citation-358\">), reprise apr\u00e8s sinistre et gestion de crise.<\/span><\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"38,0,1\"><b data-path-to-node=\"38,3,1,0\" data-index-in-node=\"0\"><span class=\"citation-357\">S\u00e9curit\u00e9 de la cha\u00eene d&rsquo;approvisionnement :<\/span><\/b><span class=\"citation-357\"> \u00e9valuer la cybers\u00e9curit\u00e9 des prestataires et fournisseurs (un point critique dans l&rsquo;\u00e9cosyst\u00e8me fran\u00e7ais).<\/span><\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"38,0,1\"><b data-path-to-node=\"38,4,1,0\" data-index-in-node=\"0\"><span class=\"citation-356\">S\u00e9curit\u00e9 dans l&rsquo;acquisition et le d\u00e9veloppement :<\/span><\/b><span class=\"citation-356\"> s&rsquo;assurer que les syst\u00e8mes sont s\u00e9curis\u00e9s \u00ab par conception \u00bb (<\/span><i data-path-to-node=\"38,4,1,0\" data-index-in-node=\"112\"><span class=\"citation-356\">secure by design<\/span><\/i><span class=\"citation-356\">).<\/span><\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"38,0,1\"><b data-path-to-node=\"38,5,1,0\" data-index-in-node=\"0\"><span class=\"citation-355\">\u00c9valuation de l&rsquo;efficacit\u00e9 :<\/span><\/b><span class=\"citation-355\"> r\u00e9aliser des audits et des contr\u00f4les de s\u00e9curit\u00e9 r\u00e9guliers.<\/span><\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"38,0,1\"><b data-path-to-node=\"38,6,1,0\" data-index-in-node=\"0\"><span class=\"citation-354\">Cyberhygi\u00e8ne et formation :<\/span><\/b><span class=\"citation-354\"> sensibilisation et formation obligatoires pour les employ\u00e9s et la direction g\u00e9n\u00e9rale.<\/span><\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"38,0,1\"><b data-path-to-node=\"38,7,1,0\" data-index-in-node=\"0\"><span class=\"citation-353\">Cryptographie et chiffrement :<\/span><\/b><span class=\"citation-353\"> utilisation d&rsquo;outils pour prot\u00e9ger les donn\u00e9es sensibles.<\/span><\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"38,0,1\"><b data-path-to-node=\"38,8,1,0\" data-index-in-node=\"0\"><span class=\"citation-352\">S\u00e9curit\u00e9 des RH :<\/span><\/b><span class=\"citation-352\"> contr\u00f4le d&rsquo;acc\u00e8s et politiques du \u00ab moindre privil\u00e8ge \u00bb.<\/span><\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"38,0,1\"><b data-path-to-node=\"38,9,1,0\" data-index-in-node=\"0\"><span class=\"citation-351\">Authentification multifacteur (MFA) :<\/span><\/b><span class=\"citation-351\"> solutions de v\u00e9rification en deux \u00e9tapes et communications s\u00e9curis\u00e9es.<\/span><\/p>\n<\/li>\n<\/ul>\n<h3><span data-path-to-node=\"39,1\"><span class=\"citation-350\">2. Obligation de notification des incidents<\/span><\/span><\/h3>\n<p data-path-to-node=\"40\"><span data-path-to-node=\"40,1\"><span class=\"citation-349\">Les EE comme les EI ont le m\u00eame devoir de signaler \u00e0 l&rsquo;ANSSI tout incident significatif via ses plateformes officielles, en respectant le calendrier europ\u00e9en suivant :<\/span><\/span><\/p>\n<ul data-path-to-node=\"41\">\n<li>\n<p data-path-to-node=\"41,0,1\"><span data-path-to-node=\"41,0,1,0\"><b data-path-to-node=\"41,0,1,0\" data-index-in-node=\"0\"><span class=\"citation-348\">Alerte pr\u00e9coce (24 heures) :<\/span><\/b><span class=\"citation-348\"> notification initiale indiquant si l&rsquo;incident est grave ou s&rsquo;il r\u00e9sulte d&rsquo;actes illicites.<\/span><\/span><\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"41,0,1\"><b data-path-to-node=\"41,1,1,0\" data-index-in-node=\"0\"><span class=\"citation-347\">Notification de l&rsquo;incident (72 heures) :<\/span><\/b><span class=\"citation-347\"> mise \u00e0 jour des informations, \u00e9valuation de la gravit\u00e9 et de l&rsquo;impact.<\/span><\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"41,0,1\"><b data-path-to-node=\"41,2,1,0\" data-index-in-node=\"0\"><span class=\"citation-346\">Rapport final (1 mois) :<\/span><\/b><span class=\"citation-346\"> description d\u00e9taill\u00e9e, cause racine et mesures correctives appliqu\u00e9es.<\/span><\/p>\n<\/li>\n<\/ul>\n<h3><span data-path-to-node=\"42,1\"><span class=\"citation-345\">3. Responsabilit\u00e9 de la direction g\u00e9n\u00e9rale<\/span><\/span><\/h3>\n<p><span data-path-to-node=\"43,1\"><span class=\"citation-344\">En France, la transposition de la directive NIS2 insiste tout particuli\u00e8rement sur le fait que les organes de direction (administrateurs et comit\u00e9s de direction) doivent <\/span><b data-path-to-node=\"43,1\" data-index-in-node=\"170\"><span class=\"citation-344\">approuver les mesures de cybers\u00e9curit\u00e9 et superviser leur mise en \u0153uvre<\/span><\/b><span class=\"citation-344\">. <\/span><\/span><span data-path-to-node=\"43,4\"><span class=\"citation-343\">Ils sont directement responsables en cas de manquement et ont l&rsquo;obligation l\u00e9gale de suivre une formation sp\u00e9cifique \u00e0 la cybers\u00e9curit\u00e9 afin de comprendre les risques auxquels leur organisation est expos\u00e9e.<\/span><\/span><\/p>\n<p>\ud83d\udccc D\u00e9couvrez <a href=\"https:\/\/factorial.fr\/blog\/sanctions-nis2\/\">les sanctions en cas de non-respect de la directive <span class=\"hover:entity-accent entity-underline inline cursor-pointer align-baseline\"><span class=\"whitespace-normal\">NIS2<\/span><\/span><\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>La directive NIS2 marque un tournant d\u00e9cisif dans les obligations de cybers\u00e9curit\u00e9 pour des milliers d&rsquo;entreprises en Europe. Bien que toutes les organisations concern\u00e9es doivent respecter un niveau de protection \u00e9lev\u00e9 et des mesures de s\u00e9curit\u00e9 uniformes, la r\u00e9glementation introduit une distinction cl\u00e9 entre les entit\u00e9s essentielles et les entit\u00e9s importantes.\u00a0Cette classification, encadr\u00e9e en France<a href=\"https:\/\/factorial.fr\/blog\/entreprises-essentielles-vs-importantes-nis2\/\" class=\"read-more\"> [&#8230;]<\/a><\/p>\n","protected":false},"author":352,"featured_media":187035,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1058],"tags":[],"class_list":["post-187020","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-nis2-fr"],"acf":{"topics":"factorial-it"},"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.9.1) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Entreprises essentielles vs importantes en NIS2 | Factorial<\/title>\n<meta name=\"description\" content=\"Vous ne connaissez pas la diff\u00e9rence entre entreprises essentielles et importantes dans la directive NIS2 ? 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