{"id":14840,"date":"2025-11-13T10:30:35","date_gmt":"2025-11-13T10:30:35","guid":{"rendered":"https:\/\/icobench.com\/fr\/?p=14840"},"modified":"2025-11-13T10:13:49","modified_gmt":"2025-11-13T10:13:49","slug":"bybit-16-blockchains-gel-fonds-utilisateurs","status":"publish","type":"post","link":"https:\/\/icobench.com\/fr\/news\/bybit-16-blockchains-gel-fonds-utilisateurs\/","title":{"rendered":"Alerte : Bybit r\u00e9v\u00e8le que 16 blockchains peuvent geler les fonds des utilisateurs"},"content":{"rendered":"<p>Une \u00e9tude du Lazarus Security Lab de <strong>Bybit<\/strong> cr\u00e9e l\u2019inqui\u00e9tude dans l\u2019\u00e9cosyst\u00e8me. Les chercheurs ont analys\u00e9 166 blockchains publiques. Ils ont identifi\u00e9 16 r\u00e9seaux capables de geler les fonds des utilisateurs directement au niveau du protocole.<br>\nDe plus, 19 autres blockchains pourraient activer ce type de fonction avec des modifications relativement simples. Cette r\u00e9v\u00e9lation relance une question cl\u00e9 : qui contr\u00f4le vraiment vos cryptos sur certains r\u00e9seaux pr\u00e9sent\u00e9s comme d\u00e9centralis\u00e9s ?<\/p>\n<h2><span id=\"ce_que_revele_letude_de_bybit_sur_166_blockchains\">Ce que r\u00e9v\u00e8le l\u2019\u00e9tude de Bybit sur 166 blockchains<\/span><\/h2>\n<blockquote class=\"twitter-tweet\" data-width=\"550\" data-dnt=\"true\">\n<p lang=\"en\" dir=\"ltr\">Bybit just revealed that 16 major blockchains contain hidden code capable of freezing user funds.<\/p>\n<p>\u2013 Findings came from a recent internal audit<br>\u2013 Affected chains include several top-20 networks by market cap<br>\u2013 Code allows validators or core devs to halt transactions at will<\/p>\n<p>If\u2026 <a href=\"https:\/\/t.co\/wJjyq0Sorp\" target=\"_blank\" rel=\"noopener noreferrer\">pic.twitter.com\/wJjyq0Sorp<\/a><\/p>\n<p>\u2014 0xMarioNawfal (@RoundtableSpace) <a href=\"https:\/\/twitter.com\/RoundtableSpace\/status\/1988626589102534719?ref_src=twsrc%5Etfw\" target=\"_blank\" rel=\"noopener noreferrer\">November 12, 2025<\/a><\/p><\/blockquote>\n<p><script async src=\"https:\/\/platform.twitter.com\/widgets.js\" charset=\"utf-8\"><\/script><\/p>\n<p>Bybit a publi\u00e9 <a href=\"https:\/\/assets.contentstack.io\/v3\/assets\/bltffdbacf2f22e15fa\/bltda1597363a4f2a2b\/69144b86424c333a34bc9fa8\/2509-T68340_Security_Report_1111.pdf\" target=\"_blank\" rel=\"noopener noreferrer\">un rapport inqui\u00e9tant<\/a>. L\u2019\u00e9quipe de recherche a cherch\u00e9 l\u2019existence de <strong>\u201ckill switches\u201d<\/strong>, des m\u00e9canismes qui permettent de bloquer des adresses ou des solde pr\u00e9cis. Les d\u00e9veloppeurs pr\u00e9sentent souvent ces outils comme une r\u00e9ponse aux hacks, aux vols ou aux failles critiques. En cas d\u2019attaque, ils peuvent stopper une fuite de fonds.<\/p>\n<p>Toutefois, l\u2019\u00e9tude montre aussi la face cach\u00e9e de ces dispositifs. Dans plusieurs cas, le pouvoir de gel se situe au c\u0153ur du protocole, et non dans une application ou un simple service. La d\u00e9cision revient alors \u00e0 une fondation, \u00e0 un groupe de validateurs ou \u00e0 un multisig tr\u00e8s restreint.<\/p>\n<p>Certains r\u00e9seaux d\u00e9j\u00e0 cit\u00e9s utilisent ce type de m\u00e9canisme. Des blockchains comme <a href=\"https:\/\/icobench.com\/fr\/news\/bnb-smart-chain-nouveau-paradis-memecoins\/\" rel=\"\">BNB Chain<\/a>, VeChain, Chiliz, Viction ou XDC disposent de fonctions permettant de <strong>geler une adresse ou un montant<\/strong>. D\u2019autres, comme Aptos, <a href=\"https:\/\/icobench.com\/fr\/news\/sui-prepare-lancement-stablecoin-natif-usdsui\/\" rel=\"\">Sui<\/a> ou EOS, reposent plut\u00f4t sur des fichiers de configuration pour appliquer des <strong>blocages cibl\u00e9s<\/strong>.<\/p>\n<p>Dans le pass\u00e9, ces fonctions ont servi \u00e0 limiter des d\u00e9g\u00e2ts. VeChain a par exemple gel\u00e9 des jetons issus d\u2019un hack, tout comme BNB Chain lors d\u2019un exploit sur un pont. Les victimes ont vu une partie des fonds prot\u00e9g\u00e9s. Mais ces \u00e9pisodes ont aussi prouv\u00e9 qu\u2019un centre de d\u00e9cision peut intervenir \u00e0 tout moment sur les soldes des utilisateurs.<\/p>\n<h2><span id=\"comment_ces_blockchains_peuvent_geler_les_fonds_des_utilisateurs\">Comment ces blockchains peuvent geler les fonds des utilisateurs<\/span><\/h2>\n<p>Bybit distingue <strong>trois grandes familles de m\u00e9canismes<\/strong>. Premi\u00e8rement, le gel \u201chardcoded\u201d. Ici, la logique de blocage figure directement dans le code source du protocole. Une mise \u00e0 jour peut ajouter une adresse \u00e0 une liste de blocage ou d\u00e9clencher un <strong>gel sur un ensemble de comptes<\/strong>. Ce mod\u00e8le permet d\u2019agir vite, mais il renforce la centralisation du pouvoir.<\/p>\n<p>Deuxi\u00e8mement, le gel par configuration. Dans ce cas, le r\u00e9seau utilise des fichiers de param\u00e8tres pour appliquer des restrictions. Les op\u00e9rateurs de n\u0153uds modifient ces fichiers, puis red\u00e9marrent ou mettent \u00e0 jour leur client. L\u2019avantage r\u00e9side dans la souplesse et l\u2019adaptation rapide. Le probl\u00e8me vient du <strong>manque de visibilit\u00e9 pour l\u2019utilisateur<\/strong>, qui ne voit pas forc\u00e9ment ces changements.<\/p>\n<p>Troisi\u00e8mement, le gel via smart contract. Certaines blockchains d\u00e9l\u00e8guent cette comp\u00e9tence \u00e0 un contrat d\u2019administration. Celui-ci g\u00e8re des listes d\u2019adresses bloqu\u00e9es ou des r\u00e8gles de transfert. Une \u00e9quipe de d\u00e9veloppement ou <strong>une DAO d\u00e9tient alors les droits d\u2019administration<\/strong>. Cette approche semble plus transparente, car les r\u00e8gles sont on-chain. Pourtant, elle donne toujours un pouvoir consid\u00e9rable \u00e0 quelques cl\u00e9s priv\u00e9es.<\/p>\n<p>Au final, ces trois m\u00e9canismes montrent que la notion de d\u00e9centralisation absolue reste souvent th\u00e9orique. En pratique, des acteurs sp\u00e9cifiques gardent la main sur des interrupteurs critiques.<\/p>\n<h2><span id=\"risques_pour_les_utilisateurs_et_enjeux_de_decentralisation\">Risques pour les utilisateurs et enjeux de d\u00e9centralisation<\/span><\/h2>\n<p>Pour les utilisateurs, le principal risque tient \u00e0 la <strong>confiance aveugle<\/strong>. Beaucoup ignorent que leur blockchain favorite peut geler leurs fonds sur d\u00e9cision d\u2019un groupe restreint. Ils d\u00e9couvrent ce pouvoir seulement apr\u00e8s un incident. C\u2019est d\u00e9j\u00e0 trop tard.<br>\nPourtant, ces m\u00e9canismes ne sont pas forc\u00e9ment ill\u00e9gitimes. Ils peuvent prot\u00e9ger les utilisateurs lors de piratages massifs, de bugs critiques ou de fautes graves dans un bridge. La question n\u2019est donc pas \u201cfaut-il un gel oui ou non ?\u201d, mais plut\u00f4t<strong> \u201cqui d\u00e9cide, comment, et selon quelles r\u00e8gles ?\u201d<\/strong>.<\/p>\n<p>Pour r\u00e9duire le risque d\u2019abus, plusieurs bonnes pratiques s\u2019imposent. Il devient essentiel de :<\/p>\n<ul>\n<li>Lire la documentation de la blockchain utilis\u00e9e, notamment la partie s\u00e9curit\u00e9 et gouvernance.<\/li>\n<li>Identifier les acteurs capables d\u2019activer un gel : fondation, multisig, comit\u00e9 technique ou DAO.<\/li>\n<li>Diversifier ses expositions, en \u00e9vitant de concentrer tous ses fonds sur un seul r\u00e9seau tr\u00e8s centralis\u00e9.<\/li>\n<li>Ma\u00eetriser la self-custody, afin de garder le contr\u00f4le de ses cl\u00e9s, m\u00eame si le protocole contient des garde-fous.<\/li>\n<\/ul>\n<p>Enfin, cette \u00e9tude met la pression sur les \u00e9quipes projet. Elles devront expliquer clairement leurs <a href=\"https:\/\/icobench.com\/fr\/news\/portefeuille-crypto-web3-repenser-securite\/\" rel=\"\"><strong>m\u00e9canismes de s\u00e9curit\u00e9<\/strong><\/a>, publier des proc\u00e9dures d\u2019activation et rendre des comptes en cas de gel. \u00c0 terme, des standards pourraient \u00e9merger : votes on-chain obligatoires, d\u00e9lais minimum avant application, journaux publics des d\u00e9cisions. Ce mouvement irait dans le bon sens. Il permettrait de concilier <strong>protection des utilisateurs et esprit de la d\u00e9centralisation<\/strong>, sans que les d\u00e9tenteurs de cryptos d\u00e9couvrent trop tard que quelqu\u2019un poss\u00e8de un bouton \u201cpause\u201d sur leurs fonds.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Une \u00e9tude du Lazarus Security Lab de Bybit cr\u00e9e l\u2019inqui\u00e9tude dans l\u2019\u00e9cosyst\u00e8me. Les chercheurs ont analys\u00e9 166 blockchains publiques&#8230;.<\/p>\n","protected":false},"author":245,"featured_media":14841,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":""},"categories":[7],"tags":[],"class_list":["post-14840","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news","entry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.8.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Alerte : Bybit r\u00e9v\u00e8le que 16 blockchains peuvent geler les fonds des utilisateurs<\/title>\n<meta name=\"description\" content=\"Bybit alerte : 16 blockchains disposent d\u2019un m\u00e9canisme technique de gel des fonds. 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