{"id":173567,"date":"2025-11-08T16:00:00","date_gmt":"2025-11-08T16:00:00","guid":{"rendered":"https:\/\/cryptonews.com\/fr\/?p=173567"},"modified":"2025-11-08T13:04:41","modified_gmt":"2025-11-08T13:04:41","slug":"balancer-hack-100m-ultimatum","status":"publish","type":"post","link":"https:\/\/cryptonews.com\/fr\/news\/balancer-hack-100m-ultimatum\/","title":{"rendered":"Balancer implore son hacker de restituer les 100 M$ vol\u00e9s"},"content":{"rendered":"<p class=\"wp-block-paragraph\">Le message est parti on-chain. L&rsquo;\u00e9quipe derri\u00e8re le DEX veut r\u00e9cup\u00e9rer <strong>plus de 100 M$<\/strong> d\u00e9rob\u00e9s sur ses pools. En \u00e9change, une porte de sortie honorable avec <em>bounty<\/em> (prime) et promesse de clore l&rsquo;affaire. Derri\u00e8re l&rsquo;ultimatum, une r\u00e9alit\u00e9 plus simple qu&rsquo;elle n&rsquo;en a l&rsquo;air : si l&rsquo;argent ne revient pas tr\u00e8s vite, la <strong>traque technique, juridique et communautaire<\/strong> va s&rsquo;amplifier. Et tout le monde regardera ce dossier comme un <strong>test grandeur nature<\/strong> pour la s\u00e9curit\u00e9 DeFi en 2025.<\/p><h2 class=\"wp-block-heading\">Ultimatum public et fen\u00eatre de sortie<\/h2><span class=\"replacer\"><\/span><p class=\"wp-block-paragraph\">Balancer a publi\u00e9 son avertissement on-chain et relay\u00e9 l&rsquo;appel \u00e0 restitution. Le ton est ferme : rendez les fonds contre une <strong>r\u00e9compense qui peut atteindre une part significative<\/strong> du butin, sinon la DAO activera les leviers techniques et l\u00e9gaux. L&rsquo;objectif est clair : rapatrier l&rsquo;essentiel au plus vite, limiter les d\u00e9g\u00e2ts pour les LPs et montrer qu&rsquo;un protocole peut encore <strong>n\u00e9gocier<\/strong> lorsque la faille ne d\u00e9truit pas l&rsquo;infrastructure elle-m\u00eame.<\/p><figure class=\"wp-block-embed is-type-rich is-provider-twitter wp-block-embed-twitter\"><div class=\"wp-block-embed__wrapper\">\n<blockquote class=\"twitter-tweet\" data-width=\"550\" data-dnt=\"true\"><p lang=\"en\" dir=\"ltr\">On wednesday, we sent an on-chain message to all known addresses involved in Monday&#39;s exploit, following the best practices and offering a path for the hacker to contact us and return the funds.<br><br>We understand that affected users are awaiting further updates. We will continue to\u2026 <a href=\"https:\/\/t.co\/alUh4n9C3V\">pic.twitter.com\/alUh4n9C3V<\/a><\/p>&mdash; Balancer (@Balancer) <a href=\"https:\/\/twitter.com\/Balancer\/status\/1986840336065569212?ref_src=twsrc%5Etfw\">November 7, 2025<\/a><\/blockquote><script async src=\"https:\/\/platform.twitter.com\/widgets.js\" charset=\"utf-8\"><\/script>\n<\/div><\/figure><p class=\"wp-block-paragraph\">Dans la pratique, cette strat\u00e9gie de communication fonctionne quand l&rsquo;attaquant veut pr\u00e9server une r\u00e9putation ou quand il estime que <strong>blanchir des actifs tr\u00e8s tra\u00e7ables<\/strong> sera trop co\u00fbteux. Ici, les transferts initiaux ont aliment\u00e9 un seul wallet fra\u00eechement cr\u00e9\u00e9. La piste est donc <strong>lisible<\/strong> et invite \u00e0 une r\u00e9solution rapide, si l&rsquo;exfiltration ne s&rsquo;acc\u00e9l\u00e8re pas.<\/p><h2 class=\"wp-block-heading\">Ce que l&rsquo;enqu\u00eate technique laisse entrevoir<\/h2><span class=\"replacer\"><\/span><p class=\"wp-block-paragraph\">L&rsquo;incident touche des <strong>pools stables V2<\/strong> et leur logique de swap. Les premiers \u00e9l\u00e9ments pointent un encha\u00eenement pr\u00e9cis : appels agr\u00e9g\u00e9s type BatchSwaps, comportement d&rsquo;arrondi sur des EXACT_OUT et arbitrages de solde entre repr\u00e9sentations de liquid staked ETH. On n&rsquo;est pas face \u00e0 un simple front-end spoof ou \u00e0 un DNS hijack.<\/p><p class=\"wp-block-paragraph\">C&rsquo;est un hack avec un timing millim\u00e9tr\u00e9 et une compr\u00e9hension fine des chemins de calcul. Ce niveau de pr\u00e9cision rappelle pourquoi <a href=\"https:\/\/www.okx.com\/fr\/learn\/smart-contract-security\" target=\"_blank\" rel=\"noreferrer noopener\">les audits statiques ne suffisent plus<\/a>. <\/p><p class=\"wp-block-paragraph\">Les rapports pr\u00e9alables valident un \u00e9tat du code. Ils ne mod\u00e9lisent pas toutes les <strong>interactions combinatoires<\/strong> en production. L\u00e0 o\u00f9 la DeFi a gagn\u00e9 en sophistication, elle a aussi \u00e9tendu sa surface d&rsquo;attaque : plus de modules, plus d&rsquo;adaptateurs, donc plus <strong>d&rsquo;endroits fragiles<\/strong>.<\/p><p class=\"wp-block-paragraph\">Pour les utilisateurs, l&rsquo;effet domino est concret. Quand des pools stables sont touch\u00e9s, ce n&rsquo;est pas seulement un prix qui chute. Ce sont des parts de LP qui se d\u00e9forment, des strat\u00e9gies de farming qui prennent l&rsquo;eau et des <strong>collat\u00e9raux qui perdent le ratio<\/strong> au pire moment.<\/p><h2 class=\"wp-block-heading\">Les indices d&rsquo;une pr\u00e9paration longue<\/h2><span class=\"replacer\"><\/span><p class=\"wp-block-paragraph\">Les traces on-chain esquissent un profil <strong>m\u00e9thodique<\/strong>. L&rsquo;alimentation du compte en petites unit\u00e9s via un mixer, la r\u00e9partition soigneuse afin d&rsquo;\u00e9viter de laisser des empreintes grossi\u00e8res ainsi que les indices laiss\u00e9s juste assez tard pour retarder la corr\u00e9lation.<\/p><p class=\"wp-block-paragraph\">Plusieurs analystes ont not\u00e9 des d\u00e9p\u00f4ts Tornado par paquets de <strong>0,1 ETH<\/strong>, assortis d&rsquo;un coussin de 100 ETH en r\u00e9serve, signe d&rsquo;un profil exp\u00e9riment\u00e9, qui n&rsquo;en est pas \u00e0 sa premi\u00e8re fois.<\/p><figure class=\"wp-block-embed is-type-rich is-provider-twitter wp-block-embed-twitter\"><div class=\"wp-block-embed__wrapper\">\n<blockquote class=\"twitter-tweet\" data-width=\"550\" data-dnt=\"true\"><p lang=\"en\" dir=\"ltr\">Balancer was hacked for ~$100M. Hacker seems experienced:<br>1. Seeded account via 100 ETH and 0.1 Tornado Cash deposits. No opsec leaks<br>2. Since there were no recent 100 ETH Tornado deposits,  likely that exploiter had funds there from previous exploits <a href=\"https:\/\/t.co\/OQOpfKwzxv\">pic.twitter.com\/OQOpfKwzxv<\/a><\/p>&mdash; Conor (@jconorgrogan) <a href=\"https:\/\/twitter.com\/jconorgrogan\/status\/1985347767795859898?ref_src=twsrc%5Etfw\">November 3, 2025<\/a><\/blockquote><script async src=\"https:\/\/platform.twitter.com\/widgets.js\" charset=\"utf-8\"><\/script>\n<\/div><\/figure><p class=\"wp-block-paragraph\">Pourquoi c&rsquo;est important ? Parce que plus l&rsquo;attaquant a pr\u00e9par\u00e9 ses <strong>voies de sortie<\/strong>, plus l&rsquo;argument du bounty doit \u00eatre convaincant. <\/p><h2 class=\"wp-block-heading\">Les le\u00e7ons \u00e0 en tirer pour la DeFi<\/h2><span class=\"replacer\"><\/span><p class=\"wp-block-paragraph\">D&rsquo;abord, la <strong>supervision en temps r\u00e9el<\/strong> n&rsquo;est plus un luxe. Les protocoles doivent d\u00e9tecter des gradients d&rsquo;anomalies, pas seulement des \u00e9v\u00e9nements finis. Ensuite, la communication on-chain rapide avec une offre claire peut encore <strong>sauver une partie du capital<\/strong>.<\/p><p class=\"wp-block-paragraph\">Enfin, la <strong>diversit\u00e9 des audits<\/strong> compte. Multiplier les angles, confronter les hypoth\u00e8ses d&rsquo;ex\u00e9cution et rejouer des sc\u00e9narios de march\u00e9 extr\u00eames r\u00e9duit les angles morts. Pour Balancer, l&rsquo;issue la moins mauvaise reste un retour massif des fonds accompagn\u00e9 d&rsquo;une prime.<\/p><p class=\"wp-block-paragraph\">Ce serait une d\u00e9monstration utile : m\u00eame quand une attaque pousse au c\u0153ur logique d&rsquo;un AMM, une combinaison de <strong>pression communautaire<\/strong>, de tra\u00e7abilit\u00e9 publique et d&rsquo;incitation financi\u00e8re peut limiter la casse.<\/p><p class=\"wp-block-paragraph\">C\u00f4t\u00e9 utilisateurs, la r\u00e8gle de base ne change pas. On ne sur-dimensionne pas un d\u00e9p\u00f4t sur un <a href=\"https:\/\/cryptonews.com\/fr\/news\/hacks-crypto-2025\/\">seul protocole<\/a>. On \u00e9vite de superposer emprunts et strat\u00e9gies sur les m\u00eames briques techniques.<\/p><p class=\"wp-block-paragraph\">Et on se tient pr\u00eat \u00e0 d\u00e9ployer un plan B si un pool critique passe en <strong>mode d\u00e9grad\u00e9<\/strong>.<\/p><hr class=\"wp-block-separator has-alpha-channel-opacity\"><p class=\"wp-block-paragraph\">Pour aller plus loin sur le sujet :<\/p><ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/cryptonews.com\/fr\/news\/hack-balancer-70-millions-dollars-eth\/\">Hack de Balancer : 70 millions de dollars perdus en ETH selon Lookonchain<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/cryptonews.com\/fr\/exclusives\/piratage-deuler-labs-le-hacker-restitue-tous-les-actifs-recuperables\/\">Piratage d&rsquo;Euler Labs : le hacker restitue \u00ab\u00a0tous les actifs pirat\u00e9s\u00a0\u00bb<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/cryptonews.com\/fr\/news\/membres-communaute-ethereum-proposent-nouvelle-norme-diminuer-hacks-defi\/\">Ethereum (ETH) : une nouvelle norme pour diminuer les hacks DeFi<\/a><\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"<p>Le message est parti on-chain. L&rsquo;\u00e9quipe derri\u00e8re le DEX veut r\u00e9cup\u00e9rer plus de 100 M$ d\u00e9rob\u00e9s sur ses pools. En \u00e9change, une porte de sortie honorable avec bounty (prime) et promesse de clore l&rsquo;affaire. Derri\u00e8re l&rsquo;ultimatum, une r\u00e9alit\u00e9 plus simple qu&rsquo;elle n&rsquo;en a l&rsquo;air : si l&rsquo;argent ne revient pas tr\u00e8s vite, la traque technique, [&hellip;]<\/p>\n","protected":false},"author":708,"featured_media":173572,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[6,1],"tags":[],"editors":[2551],"sponsored_companies":[],"class_list":["post-173567","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-bitcoin-news","category-news","editors-julien-leroy"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Balancer implore son hacker de restituer les 100 M$ vol\u00e9s<\/title>\n<meta name=\"description\" content=\"Balancer lance un dernier appel au hacker derri\u00e8re le vol de 100 M$ avant d\u2019engager des 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