{"id":1206,"date":"2025-11-03T13:42:10","date_gmt":"2025-11-03T13:42:10","guid":{"rendered":"https:\/\/easyglobalconsulting.com\/?page_id=1206"},"modified":"2026-03-11T16:24:41","modified_gmt":"2026-03-11T16:24:41","slug":"savoir_3","status":"publish","type":"page","link":"https:\/\/easyglobalconsulting.com\/index.php\/savoir_3\/","title":{"rendered":"savoir+_3"},"content":{"rendered":"\n
<\/span>
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\"\"<\/figure>\n\n\n\n

\u26a0\ufe0f 3. Les principales menaces<\/strong><\/h3>\n\n\n\n
    \n
  • \ud83e\udda0 Virus, ransomwares, malwares<\/strong> : bloquent ou d\u00e9truisent les donn\u00e9es.<\/li>\n\n\n\n
  • \ud83c\udfa3 Phishing (hame\u00e7onnage)<\/strong> : vol d\u2019identifiants par e-mails trompeurs.<\/li>\n\n\n\n
  • \ud83d\udca5 Attaques par d\u00e9ni de service (DDoS)<\/strong> : saturent les serveurs.<\/li>\n\n\n\n
  • \ud83d\udc64 Erreurs humaines<\/strong> : mauvaise manipulation, fuite de donn\u00e9es.<\/li>\n\n\n\n
  • \ud83d\udd75\ufe0f\u200d\u2642\ufe0f Intrusions et piratages<\/strong> : acc\u00e8s non autoris\u00e9s \u00e0 un r\u00e9seau.<\/li>\n<\/ul>\n\n\n\n

    \ud83e\uddf0 4. Les solutions de s\u00e9curit\u00e9<\/strong><\/h3>\n\n\n\n

    \ud83d\uded1 Mesures techniques<\/strong><\/h4>\n\n\n\n
      \n
    • Pare-feu (firewall), antivirus, antimalware<\/li>\n\n\n\n
    • Syst\u00e8mes de d\u00e9tection d\u2019intrusion (IDS\/IPS)<\/li>\n\n\n\n
    • Chiffrement des communications (SSL\/TLS, VPN)<\/li>\n\n\n\n
    • Sauvegardes automatiques et redondantes<\/li>\n<\/ul>\n\n\n\n

      \ud83e\uddcd Mesures humaines et organisationnelles<\/strong><\/h4>\n\n\n\n
        \n
      • Formation des utilisateurs \u00e0 la cybers\u00e9curit\u00e9<\/li>\n\n\n\n
      • Politiques de mot de passe et d\u2019acc\u00e8s strictes<\/li>\n\n\n\n
      • Gestion des mises \u00e0 jour et des correctifs<\/li>\n\n\n\n
      • Plan de reprise d\u2019activit\u00e9 (PRA) et plan de continuit\u00e9 (PCA)<\/li>\n<\/ul>\n\n\n\n

        \ud83d\udcca 5. Normes et bonnes pratiques<\/strong><\/h3>\n\n\n\n

        Pour structurer et certifier la s\u00e9curit\u00e9, plusieurs r\u00e9f\u00e9rentiels existent :<\/p>\n\n\n\n

          \n
        • ISO\/IEC 27001<\/strong> : norme internationale de s\u00e9curit\u00e9 de l\u2019information<\/li>\n<\/ul>\n<\/div>\n\n\n\n
          \n

          S\u00e9curisation des SI.<\/h2>\n\n\n\n

          Voici une explication claire et structur\u00e9e sur le th\u00e8me :<\/p>\n\n\n\n

          \ud83d\udee1\ufe0f S\u00e9curisation des Syst\u00e8mes d\u2019Information (SI)<\/strong><\/h2>\n\n\n\n
          \n\n\n\n

          \ud83d\udcbb 1. Qu\u2019est-ce qu\u2019un Syst\u00e8me d\u2019Information (SI) ?<\/strong><\/h3>\n\n\n\n

          Un Syst\u00e8me d\u2019Information<\/strong> regroupe l\u2019ensemble des ressources<\/strong> (mat\u00e9riels, logiciels, donn\u00e9es, r\u00e9seaux, proc\u00e9dures et utilisateurs) permettant \u00e0 une organisation de collecter, traiter, stocker et diffuser l\u2019information<\/strong>.<\/p>\n\n\n\n

          \n

          Exemple : les serveurs, les ordinateurs, les logiciels m\u00e9tiers, les e-mails et les bases de donn\u00e9es d\u2019une entreprise font partie du SI.<\/p>\n<\/blockquote>\n\n\n\n

          \n\n\n\n

          \ud83d\udd10 2. Qu\u2019est-ce que la S\u00e9curisation du SI ?<\/strong><\/h3>\n\n\n\n

          C\u2019est l\u2019ensemble des moyens techniques, organisationnels et humains<\/strong> mis en place pour prot\u00e9ger les donn\u00e9es et les infrastructures informatiques<\/strong> contre les menaces.<\/p>\n\n\n\n

          L\u2019objectif principal :<\/p>\n\n\n\n

          \n

          Garantir la confidentialit\u00e9, l\u2019int\u00e9grit\u00e9 et la disponibilit\u00e9 des informations (le fameux triangle CIA)<\/strong><\/p>\n<\/blockquote>\n\n\n\n

          Principe<\/th>Signification<\/th>Exemple<\/th><\/tr><\/thead>
          Confidentialit\u00e9<\/strong><\/td>Seules les personnes autoris\u00e9es acc\u00e8dent aux donn\u00e9es<\/td>Mots de passe, chiffrement<\/td><\/tr>
          Int\u00e9grit\u00e9<\/strong><\/td>Les donn\u00e9es ne doivent pas \u00eatre modifi\u00e9es sans autorisation<\/td>Contr\u00f4le d\u2019acc\u00e8s, signatures num\u00e9riques<\/td><\/tr>
          Disponibilit\u00e9<\/strong><\/td>Les syst\u00e8mes doivent rester accessibles en cas d\u2019incident<\/td>Sauvegardes, redondance des serveurs<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
          \n\n\n\n

          \ud83d\ude80 6. Objectif final<\/strong><\/h3>\n\n\n\n
          \n

          Assurer la r\u00e9silience num\u00e9rique<\/strong> : \u00eatre capable de pr\u00e9venir, d\u00e9tecter, r\u00e9agir et se relever rapidement apr\u00e8s une attaque.<\/p>\n<\/blockquote>\n\n\n\n

          \n\n\n\n

          <\/p>\n<\/div>\n<\/div>\n<\/div><\/div>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center 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