{"id":27253,"date":"2021-08-03T16:55:00","date_gmt":"2021-08-03T14:55:00","guid":{"rendered":"https:\/\/perseus.de\/le-modele-zero-trust-quest-ce-que-cest-et-est-il-egalement-adapte-aux-pme\/"},"modified":"2026-03-30T15:38:58","modified_gmt":"2026-03-30T13:38:58","slug":"le-modele-zero-trust-quest-ce-que-cest-et-est-il-egalement-adapte-aux-pme","status":"publish","type":"post","link":"https:\/\/perseus.de\/fr\/le-modele-zero-trust-quest-ce-que-cest-et-est-il-egalement-adapte-aux-pme\/","title":{"rendered":"Le mod\u00e8le Zero Trust \u2013 Qu\u2019est-ce que c\u2019est et est-il \u00e9galement adapt\u00e9 aux PME ?"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"27253\" class=\"elementor elementor-27253 elementor-3452\" data-elementor-post-type=\"post\">\n\t\t\t\t<div class=\"elementor-element elementor-element-2ba0588 e-flex e-con-boxed e-con e-parent\" data-id=\"2ba0588\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-6459d3d elementor-widget elementor-widget-image\" data-id=\"6459d3d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"768\" height=\"512\" src=\"https:\/\/perseus.de\/wp-content\/uploads\/2025\/04\/Authentication-via-Unsplash_Markus-Spiske_bMvuh0YQQ68-768x512-1.jpg\" class=\"attachment-medium_large size-medium_large wp-image-27252\" alt=\"\" srcset=\"https:\/\/perseus.de\/wp-content\/uploads\/2025\/04\/Authentication-via-Unsplash_Markus-Spiske_bMvuh0YQQ68-768x512-1.jpg 768w, https:\/\/perseus.de\/wp-content\/uploads\/2025\/04\/Authentication-via-Unsplash_Markus-Spiske_bMvuh0YQQ68-768x512-1-300x200.jpg 300w\" sizes=\"(max-width: 768px) 100vw, 768px\" \/>\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">Cr\u00e9dit image : Markus Spiske via Unsplash<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-2e634c65 e-flex e-con-boxed e-con e-parent\" data-id=\"2e634c65\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-cd13593 e-con-full e-flex e-con e-child\" data-id=\"cd13593\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-cf068a6 e-con-full e-flex e-con e-child\" data-id=\"cf068a6\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-3951587 elementor-widget elementor-widget-text-editor\" data-id=\"3951587\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h6>03.08.2021<\/h6>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f4159c0 elementor-widget elementor-widget-heading\" data-id=\"f4159c0\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Le mod\u00e8le Zero Trust \u2013 Qu\u2019est-ce que c\u2019est et est-il \u00e9galement adapt\u00e9 aux PME ?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4628151 elementor-widget elementor-widget-text-editor\" data-id=\"4628151\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Cybers\u00e9curit\u00e9 |  S\u00e9curit\u00e9 informatique | Comment faire | Indices du quotidien<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-2dba573 e-con-full e-flex e-con e-child\" data-id=\"2dba573\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-f11b373 elementor-widget elementor-widget-text-editor\" data-id=\"f11b373\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong>Le mod\u00e8le Zero Trust est sur la bouche de tous en tant que concept de s\u00e9curit\u00e9 informatique. Mais que signifie concr\u00e8tement ? Et les petites et moyennes entreprises peuvent-elles aussi la mettre en \u0153uvre de mani\u00e8re r\u00e9aliste ? Nous donnons un aper\u00e7u initial et notre \u00e9valuation.   <\/strong><\/p><p><strong> <\/strong><\/p><h4><strong>Que signifie exactement \u00ab Z\u00e9ro Confiance \u00bb ?<\/strong><\/h4><p>Litt\u00e9ralement, Zero Trust signifie \u00ab zero trust \u00bb. C\u2019est d\u00e9j\u00e0 un bon aper\u00e7u de son principe de base. Apr\u00e8s tout, il s\u2019agit de ne faire confiance \u00e0 aucune identit\u00e9 d\u2019appareil, d\u2019application ou d\u2019utilisateur dans un r\u00e9seau, mais de toujours la v\u00e9rifier. L\u2019objectif est que seuls les appareils, applications et utilisateurs l\u00e9gitimes y aient acc\u00e8s \u2013 mais pas les hackers.   <\/p><p><strong> <\/strong><\/p><h4><strong>Pourquoi le mod\u00e8le de z\u00e9ro confiance devient de plus en plus courant<\/strong><\/h4><p>Pendant longtemps, un mod\u00e8le de s\u00e9curit\u00e9 informatique a pr\u00e9domin\u00e9, caract\u00e9ris\u00e9 de mani\u00e8re vivement comme un \u00ab concept de douve \u00bb. Comme un ch\u00e2teau, une entreprise est fortement prot\u00e9g\u00e9e contre l\u2019acc\u00e8s ext\u00e9rieur. Entre autres, via des pare-feux, des antivirus et autres. \u00c0 l\u2019int\u00e9rieur, en revanche, des pr\u00e9cautions de s\u00e9curit\u00e9 nettement plus faibles sont prises. L\u2019acc\u00e8s depuis ici est relativement facile car cela est g\u00e9n\u00e9ralement consid\u00e9r\u00e9 comme l\u00e9gitime.   <\/p><p>En cons\u00e9quence, les hackers peuvent causer de grands d\u00e9g\u00e2ts une fois qu\u2019ils ont franchi le foss\u00e9 m\u00e9taphorique et se d\u00e9placent dans le r\u00e9seau corporatif. Ils y parviennent souvent, par exemple par des attaques de phishing, de l\u2019ing\u00e9nierie sociale ou des failles de s\u00e9curit\u00e9 dans les programmes. Les applications cloud et la diffusion accrue du bureau central posent des d\u00e9fis suppl\u00e9mentaires pour le concept de douve \u2013 car o\u00f9 exactement le foss\u00e9 doit-il s\u2019y dessiner ?  <\/p><p>Avec le concept de Zero Trust, en revanche, l\u2019emplacement de la personne, de l\u2019appareil ou de l\u2019application n\u2019est pas si important pour \u00e9valuer la l\u00e9gitimit\u00e9 de l\u2019acc\u00e8s. Ce qui compte, c\u2019est l\u2019authentification \u2013 v\u00e9rifier si la personne, l\u2019appareil ou l\u2019application est vraiment celui qu\u2019elle pr\u00e9tend \u00eatre. En principe, le mod\u00e8le Zero Trust est donc mieux adapt\u00e9 aux r\u00e9alit\u00e9s actuelles de la vie num\u00e9rique quotidienne.  <\/p><p><strong> <\/strong><\/p><h4><strong>Non seulement pour la protection, mais aussi pour limiter les d\u00e9g\u00e2ts<\/strong><\/h4><p>Avant tout, dans le mod\u00e8le Zero Trust, il y a l\u2019authentification de tous les acc\u00e8s. Mais cela va au-del\u00e0 de cela. Cela s\u2019explique par l\u2019exp\u00e9rience que les cyberattaques surviennent souvent de l\u2019int\u00e9rieur d\u2019une entreprise. Par exemple, si des hackers ont p\u00e9n\u00e9tr\u00e9 le r\u00e9seau de l\u2019entreprise par une attaque de phishing. Par cons\u00e9quent, le mod\u00e8le Zero Trust inclut \u00e9galement des \u00e9l\u00e9ments qui aident \u00e0 d\u00e9tecter de telles attaques et \u00e0 limiter leurs d\u00e9g\u00e2ts.    <\/p><p><strong> <\/strong><\/p><h4><strong>Composants cl\u00e9s du mod\u00e8le de confiance z\u00e9ro<\/strong><\/h4><ul><li>Authentification de toutes les applications, appareils et utilisateurs<\/li><li>Transmission et stockage chiffr\u00e9s des donn\u00e9es<\/li><li>Accorder des droits d\u2019acc\u00e8s selon le principe du moindre privil\u00e8ge<\/li><li>Analyse et documentation de tout le trafic de donn\u00e9es<\/li><li>Segmentation du r\u00e9seau d\u2019entreprise en zones isol\u00e9es<\/li><\/ul><p><strong> <\/strong><\/p><h4><strong>Le z\u00e9ro trust est-il faisable pour les PME ?<\/strong><\/h4><p>Il ne fait aucun doute que la mise en \u0153uvre compl\u00e8te du mod\u00e8le Zero Trust demande des efforts. Par exemple, il faut d\u2019abord noter quelles applications, appareils et utilisateurs existent, lesquels sont l\u00e9gitimes et comment ils doivent s\u2019authentifier de mani\u00e8re s\u00e9curis\u00e9e \u00e0 l\u2019avenir. Le chiffrement doit \u00eatre cr\u00e9\u00e9, les processus \u00e9tablis puis devenir routiniers. Les droits d\u2019acc\u00e8s doivent \u00eatre v\u00e9rifi\u00e9s, soigneusement attribu\u00e9s et, si n\u00e9cessaire, ajust\u00e9s pour permettre un travail fluide. Des possibilit\u00e9s d\u2019analyse doivent \u00eatre cr\u00e9\u00e9es et exploit\u00e9es.    <\/p><p>Mais : ce chemin peut se faire \u00e9tape par \u00e9tape. Dans de nombreuses entreprises, les composantes individuelles du mod\u00e8le Zero Trust font d\u00e9j\u00e0 partie du quotidien. Tu peux construire l\u00e0-dessus. Sinon, la premi\u00e8re \u00e9tape consiste \u00e0 r\u00e9fl\u00e9chir aux mesures les plus faciles \u00e0 mettre en \u0153uvre et avec le plus grand gain en mati\u00e8re de s\u00e9curit\u00e9. Si n\u00e9cessaire, des entreprises de cybers\u00e9curit\u00e9 comme Perseus seront ravies de vous conseiller.    <\/p><p><strong> <\/strong><\/p><h4><strong>Attention : Peut-\u00eatre le plus grand obstacle dans Zero Trust<\/strong><\/h4><p>Pour nous, les humains, le terme \u00ab confiance \u00bb est tr\u00e8s charg\u00e9 d\u2019\u00e9motions. La confiance est une valeur importante. Si on nous fait confiance, nous le percevons souvent comme une r\u00e9compense. Si, en revanche, la confiance nous est retir\u00e9e ou m\u00e9fi\u00e9e, c\u2019est tr\u00e8s d\u00e9sagr\u00e9able. Si les employ\u00e9s d\u2019une entreprise comprennent mal et font r\u00e9f\u00e9rence au terme Zero Trust, ils peuvent compr\u00e9hensiblement le percevoir comme une offense. Mais sans leur soutien actif, le mod\u00e8le Zero Trust n\u2019est pas r\u00e9alisable.     <\/p><p>Par cons\u00e9quent, lors de la mise en \u0153uvre du mod\u00e8le Zero Trust, il est extr\u00eamement important de clarifier votre objectif d\u00e8s le d\u00e9part : le Zero Trust ne concerne pas la m\u00e9fiance envers les gens. Il s\u2019agit de s\u2019assurer que seules les personnes de confiance ont acc\u00e8s \u00e0 un syst\u00e8me, une application, un appareil, etc. \u2013 et non des hackers qui se font passer pour eux. <\/p><p>En temps de r\u00e9f\u00e9rences vol\u00e9es ou pirat\u00e9es, d\u2019intrus dans le r\u00e9seau d\u2019entreprise et de tentatives de fraude sophistiqu\u00e9es, c\u2019est malheureusement une mesure sens\u00e9e. Si tout le monde dans votre organisation comprend et soutient cela, vous avez \u00e9limin\u00e9 un obstacle commun au mod\u00e8le Zero Trust. <\/p><p>Notre conseil : la distinction entre authentification, authentification et autorisation n\u2019est pas tout \u00e0 fait claire pour vous ? Cet article peut vous aider \u00e0 clarifier les malentendus. <\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-4d84bbc e-flex e-con-boxed e-con e-parent\" data-id=\"4d84bbc\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-05a335d elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"05a335d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"divider.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-divider\">\n\t\t\t<span class=\"elementor-divider-separator\">\n\t\t\t\t\t\t<\/span>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Le mod\u00e8le Zero Trust est sur la bouche de tous en tant que concept de s\u00e9curit\u00e9 informatique. Mais que signifie concr\u00e8tement ? Et les petites et moyennes entreprises peuvent-elles aussi la mettre en \u0153uvre de mani\u00e8re r\u00e9aliste ? Nous donnons un aper\u00e7u initial et notre \u00e9valuation.   <\/p>\n","protected":false},"author":3,"featured_media":27252,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[61],"tags":[],"class_list":["post-27253","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Le mod\u00e8le Zero Trust \u2013 Qu\u2019est-ce que c\u2019est et est-il \u00e9galement adapt\u00e9 aux PME ? - Perseus Technologies<\/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:\/\/perseus.de\/fr\/le-modele-zero-trust-quest-ce-que-cest-et-est-il-egalement-adapte-aux-pme\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Le mod\u00e8le Zero Trust \u2013 Qu\u2019est-ce que c\u2019est et est-il \u00e9galement adapt\u00e9 aux PME ? - Perseus Technologies\" \/>\n<meta property=\"og:description\" content=\"Le mod\u00e8le Zero Trust est sur la bouche de tous en tant que concept de s\u00e9curit\u00e9 informatique. 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