{"id":7861,"date":"2026-08-01T16:16:00","date_gmt":"2026-08-01T14:16:00","guid":{"rendered":"https:\/\/cloud-systems.fr\/index.php\/2026\/08\/01\/sauvegarde-immuable-ransomware\/"},"modified":"2026-08-01T16:16:00","modified_gmt":"2026-08-01T14:16:00","slug":"sauvegarde-immuable-ransomware","status":"publish","type":"post","link":"https:\/\/cloud-systems.fr\/index.php\/2026\/08\/01\/sauvegarde-immuable-ransomware\/","title":{"rendered":"Pourquoi une sauvegarde immuable change tout face aux ransomwares"},"content":{"rendered":"<p>Un ransomware qui d\u00e9barque un lundi matin, \u00e7a arrive \u00e0 toutes les tailles d&rsquo;entreprise. Le vrai probl\u00e8me n&rsquo;est pas la panne elle-m\u00eame \u2014 c&rsquo;est ce qui se passe juste apr\u00e8s, quand vous d\u00e9couvrez que vos sauvegardes ont \u00e9t\u00e9 chiffr\u00e9es elles aussi.<\/p>\n\n<h2 class=\"wp-block-heading\">Le probl\u00e8me avec les sauvegardes \u00ab\u00a0classiques\u00a0\u00bb<\/h2>\n\n<p>Une sauvegarde stock\u00e9e sur un lecteur r\u00e9seau accessible depuis le m\u00eame domaine Windows que vos serveurs de production n&rsquo;est pas vraiment une protection \u2014 c&rsquo;est une cible de plus. Si un compte administrateur est compromis, le ransomware chiffre (ou supprime) tout ce qu&rsquo;il peut atteindre, sauvegardes incluses.<\/p>\n\n<h2 class=\"wp-block-heading\">Ce que change l&rsquo;immuabilit\u00e9<\/h2>\n\n<p>Une sauvegarde immuable est \u00e9crite une fois, puis rendue impossible \u00e0 modifier ou supprimer pendant une p\u00e9riode d\u00e9finie \u2014 m\u00eame par un compte administrateur, m\u00eame par l&rsquo;\u00e9diteur du logiciel de sauvegarde. Techniquement, \u00e7a repose sur un stockage en mode WORM (Write Once, Read Many) ou sur des politiques de r\u00e9tention verrouill\u00e9es c\u00f4t\u00e9 fournisseur.<\/p>\n\n<p>Concr\u00e8tement, en cas d&rsquo;attaque : vos donn\u00e9es de production peuvent \u00eatre chiffr\u00e9es, mais votre copie de secours reste intacte, pr\u00eate \u00e0 \u00eatre restaur\u00e9e. C&rsquo;est la diff\u00e9rence entre une aventure de deux heures et une semaine de cauchemar.<\/p>\n\n<h2 class=\"wp-block-heading\">Ce qu&rsquo;il faut v\u00e9rifier chez vous<\/h2>\n\n<ul class=\"wp-block-list\"><li>Vos sauvegardes sont-elles isol\u00e9es du domaine Windows (air gap logique) ?<\/li><li>La r\u00e9tention immuable est-elle r\u00e9ellement activ\u00e9e, ou juste \u00ab\u00a0disponible en option\u00a0\u00bb dans votre contrat ?<\/li><li>Avez-vous d\u00e9j\u00e0 test\u00e9 une restauration compl\u00e8te, pas seulement un fichier isol\u00e9 ?<\/li><\/ul>\n\n<p>C&rsquo;est exactement ce genre de v\u00e9rification que je fais lors d&rsquo;un diagnostic s\u00e9curit\u00e9 \u2014 pas de discours anxiog\u00e8ne, juste un \u00e9tat des lieux concret de ce qui tiendrait le coup ou pas.<\/p>\n\n<p style=\"font-weight:600\"><a href=\"\/index.php\/securite\">D\u00e9couvrir mon offre s\u00e9curit\u00e9 \u2192<\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>Un ransomware qui chiffre vos sauvegardes en m\u00eame temps que vos donn\u00e9es, c&rsquo;est le pire sc\u00e9nario. Voici pourquoi l&rsquo;immuabilit\u00e9 change la donne.<\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2},"jetpack_post_was_ever_published":false},"categories":[65],"tags":[],"class_list":["post-7861","post","type-post","status-publish","format-standard","hentry","category-conseils"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.1 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Pourquoi une sauvegarde immuable change tout face aux ransomwares - Cloud Systems<\/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:\/\/cloud-systems.fr\/index.php\/2026\/08\/01\/sauvegarde-immuable-ransomware\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Pourquoi une sauvegarde immuable change tout face aux ransomwares - Cloud Systems\" \/>\n<meta property=\"og:description\" content=\"Un ransomware qui chiffre vos sauvegardes en m\u00eame temps que vos donn\u00e9es, c&#039;est le pire sc\u00e9nario. 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