{"id":54183,"date":"2026-09-28T13:47:17","date_gmt":"2026-09-28T13:47:17","guid":{"rendered":"https:\/\/volity.io\/blog\/crypto-risks-rise-institutions-2\/"},"modified":"2026-09-28T21:42:54","modified_gmt":"2026-09-28T21:42:54","slug":"crypto-risks-rise-institutions","status":"publish","type":"post","link":"https:\/\/volity.io\/fr\/actualites\/crypto-risks-rise-institutions\/","title":{"rendered":"Crypto : les risques montent \u00e0 mesure que les institutions affluent"},"content":{"rendered":"<h2>Les nouvelles lignes de fracture de la crypto : fonds vol\u00e9s, argent institutionnel et machine financi\u00e8re plus rapide<\/h2>\n\n<p><b>Lundi 28 septembre 2026<\/b><\/p>\n\n<p>La crypto entame la semaine tiraill\u00e9e entre l&rsquo;ambition institutionnelle et un vieux probl\u00e8me de s\u00e9curit\u00e9.<\/p>\n\n<p>Les capitaux affluent vers les produits tokenis\u00e9s, les tr\u00e9soreries d&rsquo;entreprise et les fonds cot\u00e9s en bourse. Pourtant, le piratage de $387,5 millions subi par Bitget a raviv\u00e9 des questions \u00e9pineuses sur la responsabilit\u00e9.<\/p>\n\n<p>Bitget pr\u00e9voit de r\u00e9tablir les retraits de bitcoin aujourd&rsquo;hui \u00e0 08:00 UTC. Les retraits d&rsquo;ether devraient suivre le 29 septembre, puis ceux en USDT le 30 septembre.<\/p>\n\n<p>Le retour des autres jetons, des retraits en monnaie fiduciaire et des services de pair \u00e0 pair est pr\u00e9vu \u00e0 partir du 2 octobre. Ce calendrier par \u00e9tapes laisse aux ing\u00e9nieurs le temps d&rsquo;inspecter les syst\u00e8mes de la plateforme.<\/p>\n\n<h3>Bitget met \u00e0 l&rsquo;\u00e9preuve la finance sans permission<\/h3>\n\n<p>La plateforme a demand\u00e9 \u00e0 THORChain de bloquer les portefeuilles li\u00e9s \u00e0 l&rsquo;attaque. Selon Bitget, des actifs vol\u00e9s identifiables ne devraient pas circuler librement sur une infrastructure d\u00e9centralis\u00e9e.<\/p>\n\n<p>Les d\u00e9fenseurs de THORChain mettent en avant sa conception sans permission. Un r\u00e9seau d\u00e9pourvu d&rsquo;op\u00e9rateur classique n&rsquo;a pas de dirigeant \u00e9vident capable de stopper une transaction.<\/p>\n\n<p>Ce d\u00e9saccord d\u00e9passe le cas d&rsquo;une seule plateforme. Il pose la question de savoir qui contr\u00f4le un syst\u00e8me d\u00e9centralis\u00e9 lorsque des fonds d&rsquo;origine criminelle deviennent visibles on-chain.<\/p>\n\n<p>Les \u00e9metteurs de stablecoins disposent d&rsquo;un levier plus net. Circle et Tether ont gel\u00e9 environ $318 000 en USDC et en USDT li\u00e9s \u00e0 l&rsquo;incident.<\/p>\n\n<p>Les protocoles inter-cha\u00eenes fonctionnent autrement. Bloquer des adresses peut exiger des modifications du code, des votes de gouvernance ou l&rsquo;accord des fournisseurs de liquidit\u00e9.<\/p>\n\n<p>Selon les enqu\u00eateurs, environ 101,5 BTC li\u00e9s au piratage ont transit\u00e9 par THORChain. D&rsquo;autres actifs sont partis de TRON et sont pass\u00e9s par USDT0 et Ethereum avant d&rsquo;\u00eatre convertis en bitcoin.<\/p>\n\n<p>Environ quatre BTC ont ensuite rejoint une session CoinJoin sur Wasabi. CoinJoin peut rendre la piste d&rsquo;une transaction plus difficile \u00e0 suivre.<\/p>\n\n<p>Bitget offre une prime de r\u00e9cup\u00e9ration pouvant atteindre 10 % des actifs r\u00e9cup\u00e9r\u00e9s. La plateforme propose 5 % pour le gel des fonds et 5 % pour leur restitution.<\/p>\n\n<p>Pour les traders, la liquidit\u00e9 n&rsquo;efface pas l&rsquo;historique d&rsquo;un actif. Des cryptos transf\u00e9r\u00e9es par un pont, pass\u00e9es par un mixeur ou vol\u00e9es peuvent plus tard poser des probl\u00e8mes de conformit\u00e9 et de contrepartie.<\/p>\n\n<h3>L&rsquo;ether s&rsquo;installe dans les tr\u00e9soreries d&rsquo;entreprise<\/h3>\n\n<p>Parall\u00e8lement, BitMine a ajout\u00e9 17 362 ETH \u00e0 sa tr\u00e9sorerie. Ses avoirs d\u00e9clar\u00e9s d\u00e9passent d\u00e9sormais six millions d&rsquo;ether.<\/p>\n\n<p>Les entreprises acheteuses peuvent modifier l&rsquo;offre disponible, m\u00eame quand la demande des particuliers reste irr\u00e9guli\u00e8re. Elles font aussi de la d\u00e9tention de jetons une d\u00e9cision de bilan.<\/p>\n\n<p>Leurs actionnaires h\u00e9ritent d&rsquo;une exposition \u00e0 la conservation, aux rendements du staking, \u00e0 la liquidit\u00e9 et aux fortes variations de prix. Une position tr\u00e8s importante peut aussi devenir difficile \u00e0 c\u00e9der.<\/p>\n\n<p>L&rsquo;ambition technique d&rsquo;Ethereum grandit au m\u00eame rythme que le nombre d&rsquo;entreprises qui d\u00e9tiennent de l&rsquo;ether. Vitalik Buterin d\u00e9crit un futur \u00ab ordinateur mondial cryptographique \u00bb b\u00e2ti autour des preuves.<\/p>\n\n<p>Dans ce mod\u00e8le, les utilisateurs v\u00e9rifient des preuves cryptographiques compactes au lieu de refaire chaque calcul. Cette approche pourrait r\u00e9duire les co\u00fbts et accro\u00eetre la capacit\u00e9 du r\u00e9seau.<\/p>\n\n<p>Le travail ne dispara\u00eet pas pour autant. Il se d\u00e9place vers les syst\u00e8mes de preuve, les logiciels sp\u00e9cialis\u00e9s et les \u00e9quipes qui exploitent cette infrastructure.<\/p>\n\n<p>Autrement dit, la confiance se transf\u00e8re vers le code et des hypoth\u00e8ses math\u00e9matiques. Les investisseurs doivent toujours se demander qui \u00e9crit, audite et exploite ces syst\u00e8mes.<\/p>\n\n<h3>Les fonds tokenis\u00e9s se rapprochent des plateformes d&rsquo;\u00e9change<\/h3>\n\n<p>Franklin Templeton va proposer sur Bybit un fonds tokenis\u00e9 valoris\u00e9 \u00e0 pr\u00e8s de $687 millions. Cette cotation associe un gestionnaire d&rsquo;actifs traditionnel \u00e0 une grande plateforme crypto.<\/p>\n\n<p>La tokenisation promet un r\u00e8glement plus rapide et une propri\u00e9t\u00e9 programmable. La structure compte toutefois davantage que l&rsquo;\u00e9tiquette blockchain.<\/p>\n\n<p>Les investisseurs doivent examiner les conditions de rachat, les acheteurs \u00e9ligibles et les modalit\u00e9s de conservation. Ils doivent aussi v\u00e9rifier que les cours restent proches de la valeur liquidative.<\/p>\n\n<p>Selon Citi, 77 % des institutions envisagent d&rsquo;utiliser des garanties tokenis\u00e9es. Cela laisse entrevoir une adoption plus discr\u00e8te au sein des banques et des gestionnaires d&rsquo;actifs.<\/p>\n\n<p>Des garanties disponibles \u00e0 toute heure pourraient r\u00e9duire les d\u00e9lais de r\u00e8glement. Elles exigent aussi des r\u00e8gles strictes en mati\u00e8re de valorisation, de conservation et de liquidation.<\/p>\n\n<h3>Les r\u00e8gles arrivent sur des march\u00e9s toujours nerveux<\/h3>\n\n<p>Le Royaume-Uni ouvre mercredi sa p\u00e9riode de d\u00e9p\u00f4t des demandes d&rsquo;agr\u00e9ment crypto. Les entreprises passent d\u00e9sormais un test de gouvernance, de protection des clients et de contr\u00f4le de la criminalit\u00e9 financi\u00e8re.<\/p>\n\n<p>Le marketing ne remplacera ni la s\u00e9gr\u00e9gation des portefeuilles ni la pr\u00e9paration aux incidents. Une licence ne prot\u00e9gera pas non plus les clients sans une surveillance fiable des transactions.<\/p>\n\n<p>La Californie a pris une mesure plus cibl\u00e9e en interdisant aux responsables publics de lancer des memecoins. Cette r\u00e8gle ne peut emp\u00eacher ni les jetons existants de s&rsquo;\u00e9changer ni des imitations d&rsquo;appara\u00eetre.<\/p>\n\n<p>Le bitcoin reste pris entre de solides flux vers les fonds et un comportement d\u00e9fensif du march\u00e9. Un regain d&rsquo;inqui\u00e9tude autour de l&rsquo;Iran a remis le risque g\u00e9opolitique au premier plan.<\/p>\n\n<p>Des chiffres r\u00e9cents font \u00e9tat de $2,39 milliards d&rsquo;entr\u00e9es hebdomadaires dans les ETF bitcoin. D&rsquo;autres sources \u00e9voquent aussi une hausse de $5,3 milliards apr\u00e8s un programme de rachat de titres par le Tr\u00e9sor am\u00e9ricain.<\/p>\n\n<p>Ces flux soutiennent la demande, tandis que les chocs g\u00e9opolitiques peuvent r\u00e9duire l&rsquo;effet de levier sur les actifs risqu\u00e9s. Le bitcoin a pein\u00e9 autour de $85 000, un niveau o\u00f9 la dynamique s&rsquo;est essouffl\u00e9e.<\/p>\n\n<p>Les traders d&rsquo;ether surveillent l&rsquo;accumulation par les entreprises et les pronostics haussiers visant $5 000. Ces objectifs restent des pr\u00e9visions, pas la preuve d&rsquo;un rallye imminent.<\/p>\n\n<p>L&rsquo;exposition courte de Wintermute sur ETH, BTC et SOL aurait atteint environ $126 millions. Cette position pourrait refl\u00e9ter une couverture ou une activit\u00e9 de tenue de march\u00e9 plut\u00f4t qu&rsquo;un simple pari baissier.<\/p>\n\n<h3>La s\u00e9curit\u00e9 reste le prix d&rsquo;entr\u00e9e<\/h3>\n\n<p>Ailleurs, un utilisateur de MEXC aurait perdu $340 000 \u00e0 la suite du piratage de son compte. Zano a red\u00e9marr\u00e9 sa blockchain au bloc 3 833 000 apr\u00e8s une attaque.<\/p>\n\n<p>Chaque \u00e9v\u00e9nement r\u00e9v\u00e8le une faiblesse diff\u00e9rente : l&rsquo;acc\u00e8s aux plateformes, les identifiants des utilisateurs ou l&rsquo;int\u00e9grit\u00e9 des protocoles. Ensemble, ils montrent \u00e0 quelle vitesse le risque se propage sur des march\u00e9s interconnect\u00e9s.<\/p>\n\n<ul>\n  <li><b>Bitget :<\/b> reprise des retraits de bitcoin pr\u00e9vue \u00e0 08:00 UTC le 28 septembre.<\/li>\n  <li><b>BitMine :<\/b> tr\u00e9sorerie d\u00e9clar\u00e9e sup\u00e9rieure \u00e0 6 millions d&rsquo;ETH apr\u00e8s un achat de 17 362 ETH.<\/li>\n  <li><b>ETF bitcoin :<\/b> entr\u00e9es hebdomadaires d\u00e9clar\u00e9es de $2,39 milliards.<\/li>\n  <li><b>Wintermute :<\/b> exposition courte signal\u00e9e sur ETH, BTC et SOL, proche de $126 millions.<\/li>\n<\/ul>\n\n<p>Les capitaux b\u00e2tissent \u00e0 grande vitesse la couche institutionnelle de la crypto. Le secteur n&rsquo;a pourtant pas tranch\u00e9 la question de savoir quand une intervention prot\u00e8ge les utilisateurs et quand elle compromet la d\u00e9centralisation.<\/p>\n\n<p>Les plateformes les plus solides auront besoin de plus qu&rsquo;un r\u00e8glement rapide et une liquidit\u00e9 profonde. Il leur faudra des syst\u00e8mes capables de prot\u00e9ger les actifs quand la pression monte.<\/p>\n\n\n<h2 class=\"wp-block-heading volity-related-coverage\">Articles connexes sur Volity<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/volity.io\/fr\/crypto\/how-to-avoid-crypto-scams\/\">Comment \u00e9viter les arnaques crypto : liste de s\u00e9curit\u00e9 pour d\u00e9butants<\/a><\/li>\n<li><a href=\"https:\/\/volity.io\/fr\/trading-platforms-fr\/how-to-choose-a-trading-platform\/\">Comment choisir une plateforme de trading : une liste de v\u00e9rification en 10 points<\/a><\/li>\n<li><a href=\"https:\/\/volity.io\/fr\/trader\/demo-vs-live-trading-account\/\">D\u00e9mo vs compte de trading r\u00e9el : une liste de v\u00e9rification en 7 \u00e9tapes avant de passer en direct<\/a><\/li>\n<li><a href=\"https:\/\/volity.io\/fr\/trader\/position-sizing-risk-per-trade\/\">Comment dimensionner un trade : taille de position et risque par trade pour d\u00e9butants<\/a><\/li>\n<li><a href=\"https:\/\/volity.io\/fr\/trader\/risk-reward-ratio-explained\/\">Ratio risque-rendement expliqu\u00e9 : comment le d\u00e9finir et pourquoi il compte<\/a><\/li>\n<li><a href=\"https:\/\/volity.io\/fr\/actions\/etf-vs-index-fund\/\">ETF vs fonds indiciel : la diff\u00e9rence et lequel choisir<\/a><\/li>\n<\/ul>\n\n\n<script type=\"application\/ld+json\">{\"@context\":\"https:\/\/schema.org\",\"@type\":\"NewsArticle\",\"headline\":\"Crypto : les risques montent \u00e0 mesure que les institutions affluent\",\"datePublished\":\"2026-09-28T13:47:17+00:00\",\"dateModified\":\"2026-09-28T13:47:17+00:00\",\"author\":{\"@type\":\"Organization\",\"@id\":\"https:\/\/volity.io\/#editorial\",\"name\":\"R\u00e9daction 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