{"id":6461,"date":"2025-08-18T05:00:35","date_gmt":"2025-08-18T05:00:35","guid":{"rendered":"https:\/\/www.coinspeaker.com\/fr\/?p=6461"},"modified":"2025-08-18T07:17:32","modified_gmt":"2025-08-18T07:17:32","slug":"kraken-sevit-perturbations-blockchain","status":"publish","type":"post","link":"https:\/\/www.coinspeaker.com\/fr\/kraken-sevit-perturbations-blockchain\/","title":{"rendered":"Kraken s\u00e9vit encore plus apr\u00e8s des perturbations sur la blockchain : quelle suite ?"},"content":{"rendered":"<h2>Une attaque \u00e0 51 % menace Monero (XMR)<\/h2>\n<p>Lorsque 51 % du taux de hachage est contr\u00f4l\u00e9, on peut parler de <strong>menace<\/strong>. En fait, r\u00e9cemment, Qubic a pris le contr\u00f4le de la majorit\u00e9 de la puissance mini\u00e8re de Monero.<\/p>\n<p>La m\u00e9thode utilis\u00e9e pour l&rsquo;attaque repose sur le <strong>m\u00e9canisme uPoW<\/strong>. <a rel=\"noopener noreferrer\" href=\"https:\/\/qubic.org\/\" target=\"_blank\">Qubic<\/a> a \u00e9galement annonc\u00e9 qu&rsquo;il r\u00e9cup\u00e9rait la moiti\u00e9 des profits miniers en XMR, les convertissant en USDT pour acheter des tokens QUBIC et les envoyer \u00e0 une adresse de destruction.<\/p>\n<blockquote class=\"twitter-tweet\" data-width=\"474\" data-dnt=\"true\">\n<p lang=\"en\" dir=\"ltr\">A 6 re-org does not mean a &#39;51% attack&#39; was successful. In that case, we&#39;d see unbounded-depth re-orgs\/no blocks mined by any other mining pool (assuming the adversary censors other mining pools, as this one does).<\/p>\n<p>It does mean an adversary with a high amount of hash got lucky.<\/p>\n<p>&mdash; Luke Parker (@kayabaNerve) <a rel=\"noopener noreferrer\" target=\"_blank\" rel=\"noopener nofollow sponsored\" href=\"https:\/\/twitter.com\/kayabaNerve\/status\/1955173552363016434?ref_src=twsrc%5Etfw\">August 12, 2025<\/a><\/p><\/blockquote>\n<p><script async src=\"https:\/\/platform.twitter.com\/widgets.js\" charset=\"utf-8\"><\/script><\/p>\n<h2>Pourquoi Kraken a suspendu les d\u00e9p\u00f4ts de Monero ?<\/h2>\n<p>Le 15 ao\u00fbt, <a href=\"https:\/\/www.coinspeaker.com\/fr\/escroqueries-avocats-douteux-inquietent-fbi\/\">Kraken<\/a> a communiqu\u00e9 sa d\u00e9cision de suspendre les d\u00e9p\u00f4ts de XMR. La plateforme a observ\u00e9 qu&rsquo;un seul pool de minage <strong>contr\u00f4lait plus de la moiti\u00e9 de la puissance de hachage de Monero<\/strong>. Kraken a soulign\u00e9 que cette concentration de pouvoir minier pourrait compromettre l&rsquo;int\u00e9grit\u00e9 du r\u00e9seau.<\/p>\n<p>L\u2019\u00e9change de cryptomonnaies a pr\u00e9cis\u00e9 que les retraits et les \u00e9changes de XMR restaient <strong>fonctionnels<\/strong>. Cependant, les d\u00e9p\u00f4ts seront r\u00e9tablis lorsque la situation sera jug\u00e9e s\u00e9curis\u00e9e.<\/p>\n<h2>Les risques li\u00e9s \u00e0 la concentration du pouvoir minier<\/h2>\n<p>Le contr\u00f4le de plus de 51 % du taux de hachage pose un risque majeur pour la blockchain de <a rel=\"noopener noreferrer\" href=\"https:\/\/www.getmonero.org\/\" target=\"_blank\">Monero<\/a>. En cas de contr\u00f4le total, des attaques comme la <strong>censure des transactions<\/strong>, les doubles d\u00e9penses et les r\u00e9organisations de blocs deviennent possibles. Ces \u00e9v\u00e9nements compromettent gravement la d\u00e9centralisation, un principe cl\u00e9 de la technologie blockchain.<\/p>\n<p>Les experts rappellent que cette situation va \u00e0 <strong>l\u2019encontre de l\u2019\u00e9thique d\u00e9centralis\u00e9e de la blockchain<\/strong>. Avec Qubic en position de pouvoir, la s\u00e9curit\u00e9 du r\u00e9seau Monero est s\u00e9rieusement remise en question.<\/p>\n<blockquote class=\"twitter-tweet\" data-width=\"474\" data-dnt=\"true\">\n<p lang=\"en\" dir=\"ltr\">Fire up your miners to support the Monero network and enhance its security! <a rel=\"noopener noreferrer\" target=\"_blank\" rel=\"noopener nofollow sponsored\" href=\"https:\/\/t.co\/axXOwhhY0m\">https:\/\/t.co\/axXOwhhY0m<\/a><\/p>\n<p>&mdash; Monero (XMR) (@monero) <a rel=\"noopener noreferrer\" target=\"_blank\" rel=\"noopener nofollow sponsored\" href=\"https:\/\/twitter.com\/monero\/status\/1956729672219377884?ref_src=twsrc%5Etfw\">August 16, 2025<\/a><\/p><\/blockquote>\n<p><script async src=\"https:\/\/platform.twitter.com\/widgets.js\" charset=\"utf-8\"><\/script><\/p>\n<h2>Les r\u00e9actions du march\u00e9 et prix de Monero<\/h2>\n<p>Le prix de Monero a r\u00e9agi de mani\u00e8re mesur\u00e9e \u00e0 ces \u00e9v\u00e9nements. Apr\u00e8s l&rsquo;annonce de l&rsquo;attaque, <a rel=\"noopener noreferrer\" href=\"https:\/\/fr.wikipedia.org\/wiki\/Monero\" target=\"_blank\">XMR<\/a> a perdu plus de 10 % de sa valeur. Un autre <strong>recul de 5 %<\/strong> a suivi les jours suivants. Cependant, le token semble rebondir et a r\u00e9cemment enregistr\u00e9 une hausse de pr\u00e8s de 12 % en 24 heures.<\/p>\n<p>Actuellement, XMR est \u00e9valu\u00e9 \u00e0 environ 265 $. Sur une p\u00e9riode hebdomadaire, l&rsquo;altcoin n&rsquo;affiche qu&rsquo;une <strong>perte de 4 %<\/strong>, ce qui montre une certaine r\u00e9silience malgr\u00e9 les perturbations.<\/p>\n<h2>Quels sont les points \u00e0 retenir pour la suite ?<\/h2>\n<p>N\u2019oubliez pas les faits suivants :<\/p>\n<ol>\n<li>Kraken a <strong>suspendu les d\u00e9p\u00f4ts XMR<\/strong> pour des raisons de s\u00e9curit\u00e9 ;<\/li>\n<li><strong>Qubic contr\u00f4le plus de 51 %<\/strong> du taux de hachage de Monero ;<\/li>\n<li>L&rsquo;attaque \u00e0 51 % <strong>menace l&rsquo;int\u00e9grit\u00e9 de la blockchain<\/strong> ;<\/li>\n<li>Le prix de XMR qui a connu une <strong>l\u00e9g\u00e8re reprise apr\u00e8s la chute initiale<\/strong>.<\/li>\n<\/ol>\n<p>Bien que la situation semble stabilis\u00e9e, les investisseurs doivent rester <strong>vigilants<\/strong> face aux d\u00e9veloppements futurs. La concentration du pouvoir minier sur Monero soul\u00e8ve des questions sur la s\u00e9curit\u00e9 et la d\u00e9centralisation \u00e0 long terme.<\/p>\n<div id=\"attachment_6488\" style=\"width: 1101px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-6488\" class=\"size-full wp-image-6488\" src=\"https:\/\/www.coinspeaker.com\/fr\/wp-content\/uploads\/sites\/6\/2025\/08\/Screenshot-2025-08-18-065150.png\" alt=\"Monero\" width=\"1091\" height=\"708\" srcset=\"https:\/\/www.coinspeaker.com\/fr\/wp-content\/uploads\/sites\/6\/2025\/08\/Screenshot-2025-08-18-065150.png 1091w, https:\/\/www.coinspeaker.com\/fr\/wp-content\/uploads\/sites\/6\/2025\/08\/Screenshot-2025-08-18-065150-300x195.png 300w, https:\/\/www.coinspeaker.com\/fr\/wp-content\/uploads\/sites\/6\/2025\/08\/Screenshot-2025-08-18-065150-1024x665.png 1024w, https:\/\/www.coinspeaker.com\/fr\/wp-content\/uploads\/sites\/6\/2025\/08\/Screenshot-2025-08-18-065150-768x498.png 768w\" sizes=\"auto, (max-width: 1091px) 100vw, 1091px\" \/><p id=\"caption-attachment-6488\" class=\"wp-caption-text\">Source Coingecko<\/p><\/div>\n<hr \/>\n<p>Source :\u00a0 <a rel=\"noopener noreferrer\" href=\"https:\/\/www.ainvest.com\/news\/kraken-halts-monero-deposits-qubic-seizes-51-hashrate-2508-45\/\" target=\"_blank\">AInvest<\/a><\/p>\n<p>\u00c0 lire aussi :<\/p>\n<ul>\n<li><a href=\"https:\/\/www.coinspeaker.com\/fr\/kraken-fbi-fin-enquete\/\">Kraken : le FBI met fin \u00e0 l\u2019enqu\u00eate contre son fondateur<\/a><\/li>\n<li><a href=\"https:\/\/www.coinspeaker.com\/fr\/kraken-trading-contrats-crypto-regules-cme-etats-unis\/\">Kraken lance le trading de contrats \u00e0 terme crypto r\u00e9gul\u00e9s du CME aux \u00c9tats-Unis<\/a><\/li>\n<\/ul>\n<a class=\"infinscroll_next_page_link\" style=\"display:none\" href=\"https:\/\/www.coinspeaker.com\/fr\/blackrock-achete-eth-15x-plus-vite-btc\/\" rel=\"prev\">next<\/a>","protected":false},"excerpt":{"rendered":"<p>Kraken a suspendu les d\u00e9p\u00f4ts de Monero (XMR) apr\u00e8s une attaque sur sa blockchain.<\/p>\n<p>Cette d\u00e9cision fait suite \u00e0 une prise de contr\u00f4le de la majorit\u00e9 du taux de hachage de Monero par Qubic. C\u2019est un projet dirig\u00e9 par Sergey Ivancheglo, le cofondateur d&rsquo;IOTA.<\/p>\n","protected":false},"author":220,"featured_media":6487,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1,38],"tags":[],"class_list":["post-6461","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-actu","category-exchange"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v25.7 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Kraken s\u00e9vit encore plus apr\u00e8s des perturbations sur la blockchain : quelle suite ?<\/title>\n<meta name=\"description\" content=\"Le 15 ao\u00fbt 2025, Kraken a inform\u00e9 qu&#039;il avait suspendu les d\u00e9p\u00f4ts de Monero (XMR) apr\u00e8s une attaque sur sa blockchain.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, 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