{"id":29049,"date":"2025-12-24T08:00:14","date_gmt":"2025-12-24T08:00:14","guid":{"rendered":"https:\/\/99bitcoins.com\/fr\/?p=29049"},"modified":"2025-12-10T09:07:47","modified_gmt":"2025-12-10T09:07:47","slug":"annee-noire-retour-sur-le-hack-de-bybit-et-ses-consequences","status":"publish","type":"post","link":"https:\/\/99bitcoins.com\/fr\/altcoins\/annee-noire-retour-sur-le-hack-de-bybit-et-ses-consequences\/","title":{"rendered":"Ann\u00e9e noire : retour sur le hack de Bybit et ses cons\u00e9quences"},"content":{"rendered":"<p>Le 21 f\u00e9vrier 2025 restera comme un jour sombre dans l\u2019histoire crypto : l\u2019exchange Bybit a perdu environ 1,5 milliard de dollars en actifs num\u00e9riques, ce qui en fait le plus grand vol jamais enregistr\u00e9 dans l\u2019univers des cryptomonnaies. Ce hack spectaculaire, attribu\u00e9 \u00e0 un groupe li\u00e9 \u00e0 l\u2019\u00c9tat nord-cor\u00e9en, a mis en lumi\u00e8re la fragilit\u00e9 des exchanges centralis\u00e9s, et raviv\u00e9 des questions fondamentales sur la s\u00e9curit\u00e9, la garde d\u2019actifs, et la responsabilit\u00e9 des plateformes.<\/p>\n<h2>Un vol sans pr\u00e9c\u00e9dent, des m\u00e9canismes opaques<\/h2>\n<p>Selon plusieurs sources (Forbes, Reuters, TechCrunch), les hackers ont r\u00e9ussi \u00e0 s\u2019emparer d\u2019environ <strong>401 347 ETH<\/strong> stock\u00e9s dans un cold wallet de Bybit, pour une valeur estim\u00e9e \u00e0 plus de 1,4 milliard de dollars.<\/p>\n<p>L\u2019attaque aurait utilis\u00e9 une m\u00e9thode sophistiqu\u00e9e : une alt\u00e9ration de l\u2019interface de signature (<em>blind-signing)<\/em> permettant de <strong>falsifier l\u2019adresse de destination<\/strong> tout en affichant une adresse correcte \u00e0 l\u2019\u00e9cran, trompant ainsi les signataires du multisig.<\/p>\n<p>Quelques jours apr\u00e8s le hack, une part substantielle des fonds vol\u00e9s (environ <strong>605 millions de dollars<\/strong> en ETH) avait d\u00e9j\u00e0 \u00e9t\u00e9 lav\u00e9e, transf\u00e9r\u00e9e \u00e0 d\u2019autres portefeuilles, selon des analyses on-chain.<\/p>\n<p>Les autorit\u00e9s grecques ont proc\u00e9d\u00e9 \u00e0 une premi\u00e8re saisie de fonds li\u00e9s \u00e0 l\u2019affaire, marquant <strong>un r\u00e9veil des r\u00e9gulateurs<\/strong> face \u00e0 la capacit\u00e9 des hackers \u00e0 dissimuler d\u2019importants montants.<\/p>\n<p>Selon un rapport de 2025 compilant les incidents de l\u2019ann\u00e9e, les pertes dues aux hacks crypto atteignent p<strong>lus de 2 milliards de dollars<\/strong>, faisant des six premiers mois de 2025 un des pires semestres jamais enregistr\u00e9s.<\/p>\n<h2>R\u00e9actions, le\u00e7ons de s\u00e9curit\u00e9 et remise en question du mod\u00e8le CEX<\/h2>\n<p>Face \u00e0 l\u2019ampleur du vol, Bybit a affirm\u00e9 que <strong>ses r\u00e9serves globales suffisaient \u00e0 couvrir les pertes. <\/strong>Une promesse de remboursement des utilisateurs a \u00e9t\u00e9 faite.<\/p>\n<p>N\u00e9anmoins, le hack a raviv\u00e9 la m\u00e9fiance vis-\u00e0-vis des exchanges centralis\u00e9s. Beaucoup y voient maintenant <strong>un risque syst\u00e9mique<\/strong> : si un gros acteur peut \u00eatre vid\u00e9 de mani\u00e8re aussi spectaculaire, qu\u2019en est-il des plus petits ?<\/p>\n<p>Le hack met en lumi\u00e8re le danger des interfaces opaques et des proc\u00e9dures de signature aveugle. <strong>Certains experts de la s\u00e9curit\u00e9 blockchain alertent<\/strong> : tant que les wallets ou exchanges n\u2019imposent pas des v\u00e9rifications rigoureuses (hardware wallet, v\u00e9rification de l\u2019adresse sur un explorer, multiples check ind\u00e9pendant), le risque reste \u00e9lev\u00e9.<\/p>\n<p>Au-del\u00e0 de la technique, c\u2019est tout le mod\u00e8le \u00e9conomique de la garde centralis\u00e9e qui est questionn\u00e9. Le contraste entre <strong>promesses de s\u00e9curit\u00e9, praticit\u00e9 pour les utilisateurs, et r\u00e9alit\u00e9 d\u2019un garde-fou fragile<\/strong> pose la question d\u2019un retour massif \u00e0 l\u2019auto-custody.<\/p>\n<h2>Conclusion<\/h2>\n<p>Le <a href=\"https:\/\/99bitcoins.com\/fr\/actu\/hack-bybit-le-reseau-tentaculaire-de-lazarus\/\">hack de Bybit<\/a> a servi de piq\u00fbre de rappel brutal \u00e0 l\u2019\u00e9cosyst\u00e8me crypto : <strong>la s\u00e9curit\u00e9 technique ne suffit pas si la structure de garde reste centralis\u00e9e<\/strong>. En 2025, ce vol record pourrait devenir un moment charni\u00e8re : d\u00e9clencheur d\u2019une prise de conscience sur les risques, mais aussi d\u2019une possible r\u00e9organisation du rapport des utilisateurs \u00e0 leurs actifs. Le vrai d\u00e9fi pour 2026 sera de transformer cette alerte en renforcement r\u00e9el des pratiques, ou de voir l\u2019industrie replonger dans des vuln\u00e9rabilit\u00e9s \u00e9vitables.<\/p>\n<hr>\n<p>Sur le m\u00eame sujet :<\/p>\n<ul>\n<li>Le hack \u00e0 116M$ de Balancer aurait \u00e9t\u00e9 pr\u00e9par\u00e9 pendant des mois<\/li>\n<li>L\u2019attaque subie par ByBit renforce l\u2019importance des portefeuilles non d\u00e9positaires comme Best Wallet<\/li>\n<li><a href=\"https:\/\/99bitcoins.com\/fr\/actu\/preventes\/piratages-crypto-2025-best-wallet-la-solution\/\">Piratages crypto 2025 : Best Wallet, la solution<\/a><\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Le 21 f\u00e9vrier 2025 restera comme un jour sombre dans l\u2019histoire crypto : l\u2019exchange Bybit a perdu environ 1,5 milliard de dollars en actifs num\u00e9riques, ce qui en fait le plus grand vol jamais enregistr\u00e9 dans l\u2019univers des cryptomonnaies. Ce hack spectaculaire, attribu\u00e9 \u00e0 un groupe li\u00e9 \u00e0 l\u2019\u00c9tat nord-cor\u00e9en, a mis en lumi\u00e8re la..<\/p>\n","protected":false},"author":136161,"featured_media":29052,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":""},"categories":[10,6],"tags":[11],"coin":[15],"class_list":["post-29049","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-altcoins","category-actu","tag-altcoin"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Ann\u00e9e noire : retour sur le hack de Bybit et ses cons\u00e9quences<\/title>\n<meta name=\"description\" content=\"Le 21 f\u00e9vrier 2025 restera comme un jour sombre dans l\u2019histoire crypto : l\u2019exchange Bybit a perdu environ 1,5 milliard de dollars en 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