{"id":83294,"date":"2024-12-01T17:29:40","date_gmt":"2024-12-01T16:29:40","guid":{"rendered":"https:\/\/matuile.com\/media\/?p=83294"},"modified":"2024-12-01T17:30:03","modified_gmt":"2024-12-01T16:30:03","slug":"zero-day-definition-informatique","status":"publish","type":"post","link":"https:\/\/matuile.com\/media\/zero-day-definition-informatique\/","title":{"rendered":"Zero-day : D\u00e9finition informatique"},"content":{"rendered":"

Un zero-day<\/strong> fait r\u00e9f\u00e9rence \u00e0 une vuln\u00e9rabilit\u00e9 de s\u00e9curit\u00e9 dans un logiciel<\/a><\/strong> ou un syst\u00e8me informatique qui est inconnue des d\u00e9veloppeurs ou des responsables de la s\u00e9curit\u00e9. Le terme \u00ab\u00a0zero-day<\/strong>\u00a0\u00bb signifie qu’une faille a \u00e9t\u00e9 d\u00e9couverte mais qu\u2019aucune solution ou correction (patch) n\u2019a encore \u00e9t\u00e9 mise en place. En d’autres termes, les responsables du logiciel n’ont \u00ab\u00a0aucun jour<\/strong>\u00a0\u00bb pour se pr\u00e9parer \u00e0 une attaque exploitant cette faille, d’o\u00f9 le terme \u00ab\u00a0zero-day<\/strong>\u00a0\u00bb (jour z\u00e9ro).<\/p>

Lorsqu’une vuln\u00e9rabilit\u00e9 zero-day<\/strong> est d\u00e9couverte, elle peut \u00eatre exploit\u00e9e par des attaquants avant que le fabricant du logiciel n’ait eu le temps de publier une mise \u00e0 jour<\/a><\/strong> ou un correctif pour la r\u00e9soudre. Cela en fait une menace tr\u00e8s s\u00e9rieuse car pendant cette p\u00e9riode, il n’existe pas de protection contre l’attaque.<\/p>

Les attaques zero-day<\/strong> sont souvent utilis\u00e9es par des cybercriminels ou des hackers pour infiltrer des syst\u00e8mes, voler des informations sensibles ou installer des malwares. Elles sont particuli\u00e8rement difficiles \u00e0 d\u00e9tecter par les syst\u00e8mes de s\u00e9curit\u00e9 traditionnels. Une fois qu’une vuln\u00e9rabilit\u00e9 zero-day<\/strong> est exploit\u00e9e, elle peut avoir des cons\u00e9quences graves jusqu’\u00e0 ce qu’un patch soit publi\u00e9 et que les utilisateurs mettent \u00e0 jour leurs syst\u00e8mes.<\/p>

En r\u00e9sum\u00e9, les vuln\u00e9rabilit\u00e9s zero-day<\/strong> peuvent concerner tous types de logiciels, des syst\u00e8mes d’exploitation<\/a><\/strong> aux applications<\/a><\/strong>. Elles sont un probl\u00e8me majeur en cybers\u00e9curit\u00e9 car elles peuvent rester non d\u00e9couvertes pendant des mois, voire des ann\u00e9es.<\/p>

<\/div>

Apprenez d\u00e9finition apr\u00e8s d\u00e9finition :<\/p>

A<\/a><\/strong> B<\/a><\/strong> C<\/a><\/strong> D<\/a><\/strong> E<\/a><\/strong> F<\/a><\/strong> G<\/a><\/strong> H<\/a><\/strong> I<\/a><\/strong> J<\/a><\/strong> K<\/a><\/strong> L<\/a><\/strong> M<\/a><\/strong> N<\/a><\/strong> O<\/a><\/strong> P<\/a><\/strong> Q<\/a><\/strong> R<\/a><\/strong> S<\/a><\/strong> T<\/a><\/strong> U<\/a><\/strong> V<\/a><\/strong> W<\/a><\/strong> X<\/a><\/strong> Y<\/a><\/strong> Z<\/a><\/strong><\/p>

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","protected":false},"excerpt":{"rendered":"

Un zero-day fait r\u00e9f\u00e9rence \u00e0 une vuln\u00e9rabilit\u00e9 de s\u00e9curit\u00e9 dans un logiciel ou un syst\u00e8me informatique qui est inconnue des d\u00e9veloppeurs ou…<\/p>\n","protected":false},"author":10,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false,"footnotes":""},"categories":[344],"tags":[],"class_list":["post-83294","post","type-post","status-publish","format-standard","category-dictionnaire-informatique"],"acf":[],"yoast_head":"\nZero-day : D\u00e9finition informatique - Matuile<\/title>\n<meta name=\"description\" content=\"Un zero-day fait r\u00e9f\u00e9rence \u00e0 une vuln\u00e9rabilit\u00e9 de s\u00e9curit\u00e9 dans un logiciel ou un syst\u00e8me informatique qui est inconnue des d\u00e9veloppeurs...\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/matuile.com\/media\/zero-day-definition-informatique\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Zero-day : D\u00e9finition informatique - 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