{"id":13222,"date":"2026-05-18T07:34:31","date_gmt":"2026-05-18T05:34:31","guid":{"rendered":"https:\/\/flyingsupporter.ch\/?p=13222"},"modified":"2026-05-18T09:12:51","modified_gmt":"2026-05-18T07:12:51","slug":"perche-i-server-di-backup-non-dovrebbero-mai-far-parte-dello-stesso-dominio","status":"publish","type":"post","link":"https:\/\/flyingsupporter.ch\/it\/2026\/05\/18\/warum-backupserver-niemals-teil-derselben-domaene-sein-sollten\/","title":{"rendered":"Perch\u00e9 i server di backup non dovrebbero mai far parte dello stesso dominio"},"content":{"rendered":"<div data-elementor-type=\"wp-post\" data-elementor-id=\"13222\" class=\"elementor elementor-13222\" data-elementor-post-type=\"post\">\n\t\t\t\t<div class=\"elementor-element elementor-element-52adb76 e-flex e-con-boxed e-con e-parent\" data-id=\"52adb76\" 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-68f15df e-con-full e-flex e-con e-child\" data-id=\"68f15df\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-44cba34 e-con-full e-flex e-con e-child\" data-id=\"44cba34\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-48725cb elementor-widget__width-inherit elementor-widget elementor-widget-text-editor\" data-id=\"48725cb\" 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>I backup sono spesso considerati l'ultima risorsa dopo un attacco informatico, un difetto hardware o un errore umano. Tuttavia, un errore centrale di sicurezza viene ancora oggi ignorato in molte aziende: Il server di backup si trova nello stesso dominio Active Directory dei sistemi produttivi.<\/strong><\/p><p><b>In caso di emergenza, i backup possono essere compromessi o cancellati.<br \/><br \/><\/b><\/p><h4>Il problema di base: l'amministratore del dominio controlla tutto<\/h4><p>In un ambiente Windows classico, l'amministratore di dominio dispone di ampi diritti. Se questo account viene compromesso, ad esempio tramite phishing, malware o ransomware, l'aggressore ottiene spesso l'accesso a tutti i sistemi del dominio.<\/p><p>Se anche il server di backup si trova in questo dominio, le conseguenze sono gravi:<\/p><ul><li>I backup possono essere eliminati<\/li><li>I lavori di backup possono essere manipolati<\/li><li>I punti di ripristino scompaiono<\/li><li>Il software di backup pu\u00f2 essere disattivato<\/li><li>I trojan di crittografia raggiungono anche i backup<\/li><\/ul><p><br \/>Ci\u00f2 significa che il backup perde il suo vero scopo: il ripristino indipendente in caso di disastro.<br \/><br \/><\/p><h4>Il principio pi\u00f9 importante: infrastruttura di backup separata<\/h4><p>Una strategia di backup sicura si basa sull'isolamento. Il server di backup non deve quindi mai dipendere completamente dallo stesso dominio di cui deve proteggere i sistemi.<\/p><p>Gli approcci collaudati sono:<\/p><ul><li>un proprio dominio separato<\/li><li>Gruppo di lavoro anzich\u00e9 appartenenza al dominio<\/li><li>Reti di gestione dedicate<\/li><li>Account amministratore separati<\/li><li>regole del firewall limitate<\/li><li>Archiviazione immutabile o backup offline<\/li><\/ul><p><br \/>L'obiettivo \u00e8 chiaro: anche se il dominio di produzione \u00e8 compromesso, l'ambiente di backup deve continuare a funzionare in modo indipendente.<br \/><br \/><\/p><h4>Utente del servizio invece di amministratore del dominio<\/h4><p>Un altro errore comune \u00e8 l'uso di un account di amministratore di dominio per i lavori di backup.<\/p><p>Sebbene molte soluzioni di backup richiedano l'accesso a server, database o macchine virtuali, non richiedono i diritti di amministratore del dominio completo.<\/p><p>Si consiglia invece di utilizzare account di servizio dedicati:<\/p><ul><li>con le autorizzazioni minime necessarie<\/li><li>solo per sistemi definiti<\/li><li>senza login interattivo<\/li><li>con password forte e rotazione<\/li><li>separatamente per servizio di backup o area di sistema<\/li><\/ul><p><br \/>Questo riduce significativamente la superficie di attacco.<br \/><br \/><\/p><h4>Principio dei diritti minimi<\/h4><p>Il cosiddetto \u00abprincipio del minimo privilegio\u00bb \u00e8 uno dei principi di sicurezza pi\u00f9 importanti delle moderne infrastrutture IT.<\/p><p>Un servizio di backup richiede, ad esempio:<\/p><ul><li>Accesso a determinate azioni<\/li><li>Diritti di snapshot su hypervisor<\/li><li>Diritti di lettura del database<\/li><li>Diritti di protezione di alcuni sistemi<\/li><\/ul><p><br \/>Tuttavia, di solito non richiede il controllo completo dell'intero dominio.<\/p><p>Meno diritti ha un account compromesso, minore \u00e8 il danno potenziale.<br \/><br \/><\/p><h4>Oggi il ransomware pensa prima di tutto ai backup<\/h4><p>Gli attacchi moderni non prendono pi\u00f9 di mira solo i dati produttivi. I gruppi di ransomware professionali sono alla ricerca attiva:<\/p><ul><li>server di backup<\/li><li>Software di backup<\/li><li>Sistemi NAS<\/li><li>Istanze Veeam<\/li><li>Accessi dell'hypervisor<\/li><li>Sistemi di stoccaggio<\/li><\/ul><p><br \/>Perch\u00e9 gli aggressori lo sanno: Senza backup funzionanti, la probabilit\u00e0 di pagamento di un riscatto aumenta in modo massiccio.<\/p><p>Non \u00e8 quindi pi\u00f9 sufficiente avere un backup \u00abda qualche parte\u00bb. L'ambiente di backup stesso deve essere protetto in modo particolare.<br \/><br \/><\/p><h4>Le migliori pratiche per ambienti di backup sicuri<\/h4><p>Le seguenti misure hanno dimostrato la loro validit\u00e0:<\/p><p><strong>1. isolare il server di backup<br \/><\/strong>Non c'\u00e8 un'appartenenza diretta al dominio produttivo o una chiara separazione attraverso posizioni di fiducia separate.<\/p><p><strong>2. utilizzare i propri account di servizio<br \/><\/strong>Nessun account di amministratore di dominio per il software di backup.<\/p><p><strong>3. utilizzare backup immutabili<br \/><\/strong>I backup non devono essere cancellabili o modificabili per periodi di tempo definiti.<\/p><p><strong>4. prova di ripristino del backup<br \/><\/strong>Un backup \u00e8 prezioso solo se il ripristino funziona in modo affidabile.<\/p><p><strong>5. creare copie offline o air-gap<br \/><\/strong>Almeno una copia di backup deve essere fisicamente o logicamente separata.<br \/><br \/><\/p><p><strong>Un backup all'interno della stessa zona di sicurezza dei sistemi produttivi spesso offre una sicurezza solo illusoria. Se il dominio viene compromesso, spesso anche i backup ne risentono.<\/strong><\/p><p><strong>I server di backup dovrebbero quindi essere gestiti al di fuori del dominio da proteggere, ove possibile, con account di servizio separati e autorizzazioni minime.<\/strong><\/p><p><strong>Dopotutto, un backup fornisce una vera protezione solo se rimane inattaccabile in caso di emergenza.<\/strong><\/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 class=\"elementor-element elementor-element-5e20699 elementor-blockquote--skin-boxed elementor-blockquote--align-center elementor-widget elementor-widget-blockquote\" data-id=\"5e20699\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"blockquote.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<blockquote class=\"elementor-blockquote\">\n\t\t\t<p class=\"elementor-blockquote__content\">\n\t\t\t\t<b>Il vostro partner per server e backup - Flying Supporter<br><br><\/b> <b><a href=\"https:\/\/flyingsupporter.ch\/it\/team-di-contatto\/#form\">Avete domande<\/a>?<\/b>\n<br>Saremo lieti di aiutarvi.\t\t\t<\/p>\n\t\t\t\t\t<\/blockquote>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-605597d elementor-align-center elementor-widget elementor-widget-button\" data-id=\"605597d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm\" href=\"https:\/\/flyingsupporter.ch\/it\/team-di-contatto\/#form\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">Contattate subito<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\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\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"<p>I backup sono spesso considerati l'ultima risorsa dopo un attacco informatico, un difetto hardware o un errore umano. Tuttavia, un errore centrale di sicurezza viene ancora oggi ignorato in molte aziende: Il server di backup si trova nello stesso dominio Active Directory dei sistemi produttivi.<\/p>","protected":false},"author":25,"featured_media":13223,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"page_builder":"","footnotes":""},"categories":[95,74,77,73],"tags":[],"post_folder":[138],"class_list":["post-13222","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-empfehlungen","category-news","category-sicherheit","category-technik"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.3 - aioseo.com -->\n\t<meta name=\"description\" content=\"Backups gelten oft als letzte Rettung nach einem Cyberangriff, einem Hardwaredefekt oder menschlichen Fehlern. Trotzdem wird ein zentraler Sicherheitsfehler in vielen Unternehmen bis heute ignoriert: Der Backupserver befindet sich innerhalb derselben Active-Directory-Dom\u00e4ne wie die produktiven Systeme.\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<meta name=\"author\" content=\"Jonny R\u00fcegger\"\/>\n\t<link rel=\"canonical\" href=\"https:\/\/flyingsupporter.ch\/it\/2026\/05\/18\/warum-backupserver-niemals-teil-derselben-domaene-sein-sollten\/\" \/>\n\t\t<meta name=\"generator\" content=\"All in One SEO (AIOSEO) 5.0.3\" \/>\n\n\t\t<!-- Google tag (gtag.js) -->\n<script async src=\"https:\/\/www.googletagmanager.com\/gtag\/js?id=UA-260236989-1\"><\/script>\n<script>\n  window.dataLayer = window.dataLayer || [];\n  function gtag(){dataLayer.push(arguments);}\n  gtag('js', new Date());\n\n  gtag('config', 'UA-260236989-1');\n<\/script>\n\t\t<meta property=\"og:locale\" content=\"it_IT\" \/>\n\t\t<meta property=\"og:site_name\" content=\"Flyingsupporter GmbH\" \/>\n\t\t<meta property=\"og:type\" content=\"article\" \/>\n\t\t<meta property=\"og:title\" content=\"Warum Backupserver niemals Teil derselben Dom\u00e4ne sein sollten \u00bb Flyingsupporter GmbH\" \/>\n\t\t<meta property=\"og:description\" content=\"Backups gelten oft als letzte Rettung nach einem Cyberangriff, einem Hardwaredefekt oder menschlichen Fehlern. 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