{"id":545,"date":"2026-01-02T14:24:06","date_gmt":"2026-01-02T14:24:06","guid":{"rendered":"https:\/\/femalebandworkshops.ch\/?p=545"},"modified":"2026-01-02T14:24:07","modified_gmt":"2026-01-02T14:24:07","slug":"les-bases-de-donnees-ne-sont-plus-le-seul-tresor","status":"publish","type":"post","link":"https:\/\/femalebandworkshops.ch\/de\/les-bases-de-donnees-ne-sont-plus-le-seul-tresor\/","title":{"rendered":"Les bases de donn\u00e9es ne sont plus le seul tr\u00e9sor"},"content":{"rendered":"<p class=\"wp-block-paragraph\">Pendant des ann\u00e9es, le r\u00e9cit a \u00e9t\u00e9 simple : une attaque r\u00e9ussie, c\u2019est une base de donn\u00e9es aspir\u00e9e, puis revendue. Or, la r\u00e9alit\u00e9 observ\u00e9e sur le terrain est en train de d\u00e9placer le centre de gravit\u00e9. Les cybercriminels n\u2019ont pas besoin d\u2019un sch\u00e9ma relationnel parfait pour faire des d\u00e9g\u00e2ts. Ils veulent ce qui raconte une entreprise de l\u2019int\u00e9rieur : ses \u00e9changes, ses contrats, ses tableaux \u201cprovisoires\u201d, ses d\u00e9p\u00f4ts de code, ses pi\u00e8ces jointes. Bref, tout ce qui \u00e9chappe aux inventaires classiques et qui, pourtant, fait tourner l\u2019activit\u00e9 au quotidien.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Une analyse r\u00e9cente, fond\u00e9e sur plus de 141 millions de fichiers issus de pr\u00e8s de 1 300 incidents de<a href=\"https:\/\/www.lemondeinformatique.fr\/actualites\/lire-les-ransomwares-dopes-a-l-ia-une-menace-serieuse-pour-les-rssi-98266.html\" rel=\"nofollow\" title=\"\"> Ransomware<\/a>, met ce basculement en \u00e9vidence. Elle ne d\u00e9crit pas seulement une hausse du volume de donn\u00e9es vol\u00e9es, mais un changement de paradigme : l\u2019information non structur\u00e9e devient plus utile \u2014 et souvent plus rentable \u2014 que les bases de donn\u00e9es traditionnelles.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Le chaos documentaire, ou pourquoi ces donn\u00e9es r\u00e9sistent \u00e0 la protection<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Les donn\u00e9es non structur\u00e9es ont un d\u00e9faut majeur : elles prolif\u00e8rent naturellement. Un fichier na\u00eet dans un e-mail, est t\u00e9l\u00e9charg\u00e9, renomm\u00e9, gliss\u00e9 dans un dossier \u201c\u00e0 trier\u201d, partag\u00e9 dans une \u00e9quipe, copi\u00e9 dans un espace projet, puis r\u00e9appara\u00eet en pi\u00e8ce jointe dans une nouvelle discussion. Chaque duplication dilue la notion de \u201cpropri\u00e9taire\u201d et fragilise la logique d\u2019acc\u00e8s.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u00c0 cela s\u2019ajoute l\u2019empilement des environnements. Entre le poste de travail, la messagerie, les outils collaboratifs, les espaces cloud, les sauvegardes et les d\u00e9p\u00f4ts de code, la surface d\u2019exposition devient une mosa\u00efque. On peut s\u00e9curiser correctement un syst\u00e8me de gestion de bases de donn\u00e9es tout en laissant, \u00e0 quelques clics de l\u00e0, des exports Excel contenant des donn\u00e9es sensibles, ou des documents de travail annot\u00e9s qui n\u2019auraient jamais d\u00fb sortir d\u2019un cercle restreint.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Le probl\u00e8me n\u2019est pas uniquement technique. Il est organisationnel. Beaucoup d\u2019entreprises savent qui administre une base client, mais peinent \u00e0 r\u00e9pondre \u00e0 une question pourtant d\u00e9cisive : \u201co\u00f9 dorment nos informations les plus exploitables, et qui peut r\u00e9ellement y acc\u00e9der ?\u201d Tant que cette r\u00e9ponse reste floue, la protection repose sur des hypoth\u00e8ses. Les attaquants, eux, travaillent sur des preuves : ce qu\u2019ils exfiltrent, ils le lisent, le recoupent, l\u2019indexent.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Fraude, espionnage, manipulation : la valeur op\u00e9rationnelle des fichiers vol\u00e9s<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Les chiffres issus de l\u2019analyse sont difficiles \u00e0 ignorer. Dans 93 % des incidents \u00e9tudi\u00e9s, des documents financiers \u00e9taient pr\u00e9sents. Plus concret encore : des extraits bancaires apparaissaient dans 49 % des cas, et des IBAN dans 36 %. Ce type de contenu ne sert pas seulement \u00e0 \u201cfaire peur\u201d dans une n\u00e9gociation de ran\u00e7on. Il sert \u00e0 agir.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">D\u2019abord, l\u2019extorsion devient plus pr\u00e9cise. Menacer de publier \u201cdes donn\u00e9es\u201d est abstrait ; montrer un relev\u00e9 bancaire, un tableau de tr\u00e9sorerie, un reporting interne ou un contrat en cours de signature, c\u2019est forcer un d\u00e9cideur \u00e0 mesurer le co\u00fbt imm\u00e9diat de l\u2019exposition. La pression n\u2019est plus m\u00e9diatique seulement, elle devient \u00e9conomique, juridique, parfois personnelle.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1024\" height=\"684\" data-src=\"https:\/\/femalebandworkshops.ch\/wp-content\/uploads\/2026\/01\/donnes-1024x684.jpg\" alt=\"\" class=\"wp-image-547 lazyload\" data-srcset=\"https:\/\/femalebandworkshops.ch\/wp-content\/uploads\/2026\/01\/donnes-1024x684.jpg 1024w, https:\/\/femalebandworkshops.ch\/wp-content\/uploads\/2026\/01\/donnes-300x200.jpg 300w, https:\/\/femalebandworkshops.ch\/wp-content\/uploads\/2026\/01\/donnes-768x513.jpg 768w, https:\/\/femalebandworkshops.ch\/wp-content\/uploads\/2026\/01\/donnes-1536x1025.jpg 1536w, https:\/\/femalebandworkshops.ch\/wp-content\/uploads\/2026\/01\/donnes-2048x1367.jpg 2048w, https:\/\/femalebandworkshops.ch\/wp-content\/uploads\/2026\/01\/donnes-18x12.jpg 18w\" data-sizes=\"(max-width: 1024px) 100vw, 1024px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 1024px; --smush-placeholder-aspect-ratio: 1024\/684;\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Ensuite, ces fichiers alimentent une fraude plus sophistiqu\u00e9e. Un <a href=\"https:\/\/www.westernunion.com\/fr\/fr\/iban-code.html\" title=\"\">IBAN<\/a> rep\u00e9r\u00e9 dans un dossier \u201cfacturation\u201d, un mod\u00e8le de mail de relance, une signature scann\u00e9e, un organigramme \u00e0 jour : l\u2019attaquant peut construire des sc\u00e9narios de d\u00e9tournement de paiement cr\u00e9dibles, avec le bon ton, les bons interlocuteurs, les bons montants. L\u2019ing\u00e9nierie sociale change alors de nature. On ne \u201ctente\u201d plus un phishing g\u00e9n\u00e9rique ; on rejoue un processus interne, en exploitant les habitudes et les circuits de validation.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Enfin, l\u2019espionnage corporatif trouve dans ces donn\u00e9es un terrain fertile. Les documents de travail r\u00e9v\u00e8lent les n\u00e9gociations, les marges, les choix technologiques, les irritants op\u00e9rationnels, parfois m\u00eame les failles de gouvernance. Le code source, lui, est un acc\u00e9l\u00e9rateur : il permet d\u2019identifier des secrets mal stock\u00e9s, des d\u00e9pendances vuln\u00e9rables, des endpoints internes, et d\u2019anticiper les d\u00e9fenses. Dans ce contexte, le ransomware n\u2019est plus seulement un verrouillage avec ran\u00e7on. Il devient une phase d\u2019acc\u00e8s et d\u2019extraction, dont les retomb\u00e9es peuvent d\u00e9passer largement l\u2019incident initial.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Repenser les \u00e9valuations de cybers\u00e9curit\u00e9 : du syst\u00e8me au contenu<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Beaucoup d\u2019audits restent structur\u00e9s autour d\u2019un imaginaire \u201cinfrastructure\u201d : segmentation r\u00e9seau, durcissement, EDR, correctifs, sauvegardes. Tout cela est n\u00e9cessaire. Mais l\u2019analyse des fichiers expos\u00e9s rappelle une limite : on peut restaurer des serveurs et red\u00e9marrer la production, tout en laissant circuler, hors de contr\u00f4le, les informations qui permettent la fraude et la coercition.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Il faut donc compl\u00e9ter la lecture traditionnelle par une approche centr\u00e9e sur la donn\u00e9e elle-m\u00eame. O\u00f9 sont les documents financiers ? Qui a acc\u00e8s en \u00e9criture, en lecture, en partage externe ? Quels espaces contiennent des exports, des archives, des copies oubli\u00e9es ? Les contr\u00f4les d\u2019acc\u00e8s sont-ils coh\u00e9rents, ou h\u00e9rit\u00e9s de projets anciens ? La classification existe-t-elle autrement que sur le papier ? Et surtout : l\u2019entreprise est-elle capable de d\u00e9tecter une exfiltration silencieuse de fichiers \u201cbanals\u201d en apparence, mais explosifs par leur contenu ?<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ce d\u00e9placement impose aussi un r\u00e9alisme op\u00e9rationnel. L\u2019objectif n\u2019est pas de transformer chaque collaborateur en expert de la protection documentaire. Il s\u2019agit d\u2019industrialiser la d\u00e9couverte et la r\u00e9duction du risque : cartographier, minimiser, limiter les droits, surveiller les partages, assainir les d\u00e9p\u00f4ts de code, traiter les secrets, et int\u00e9grer ces exigences dans les projets, pas apr\u00e8s coup.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Vers une gouvernance des donn\u00e9es \u00e0 la hauteur du risque<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Si les donn\u00e9es non structur\u00e9es sont devenues une mine d\u2019or, c\u2019est aussi parce qu\u2019on les gouverne rarement comme un actif critique. La r\u00e9ponse ne sera pas un outil miracle, ni une nouvelle couche de contr\u00f4le ajout\u00e9e \u00e0 la h\u00e2te. Elle passera par des arbitrages clairs : ce qu\u2019on conserve, o\u00f9 on le conserve, qui en r\u00e9pond, combien de temps, et avec quelles r\u00e8gles de partage.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">La cybers\u00e9curit\u00e9, ici, rejoint la discipline de la gouvernance. Une organisation qui sait r\u00e9duire le bruit documentaire, limiter les duplications, ma\u00eetriser ses espaces collaboratifs et donner une visibilit\u00e9 r\u00e9elle sur l\u2019acc\u00e8s \u00e0 l\u2019information se prive d\u2019un levier majeur d\u2019extorsion et de fraude. Et elle transforme, au passage, un point faible chronique en avantage : une donn\u00e9e mieux gouvern\u00e9e est aussi une donn\u00e9e plus fiable, plus exploitable, et moins dangereuse lorsqu\u2019elle tombe entre de mauvaises mains.<\/p>","protected":false},"excerpt":{"rendered":"<p>Pendant des ann\u00e9es, le r\u00e9cit a \u00e9t\u00e9 simple : une attaque r\u00e9ussie, c\u2019est une base de donn\u00e9es aspir\u00e9e, puis revendue. Or, la r\u00e9alit\u00e9 observ\u00e9e sur le terrain est en train de d\u00e9placer le centre de gravit\u00e9. Les cybercriminels n\u2019ont pas <a class=\"more-link\" href=\"https:\/\/femalebandworkshops.ch\/de\/les-bases-de-donnees-ne-sont-plus-le-seul-tresor\/\"><span class=\"screen-reader-text\">  Les bases de donn\u00e9es ne sont plus le seul tr\u00e9sor<\/span> weiterlesen<span class=\"meta-nav\">\u2192<\/span><\/a><\/p>","protected":false},"author":1,"featured_media":546,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2],"tags":[],"class_list":["post-545","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-divers"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.1.1 - aioseo.com -->\n\t<meta name=\"description\" content=\"Emails, tableurs, docs, code : les donn\u00e9es non structur\u00e9es dopent ransomware, fraude et espionnage. 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