{"id":55398,"date":"2026-10-21T07:28:06","date_gmt":"2026-10-21T07:28:06","guid":{"rendered":"https:\/\/buycrypt.com\/blog\/quantum-attack-on-bitcoin\/"},"modified":"2026-10-21T07:28:06","modified_gmt":"2026-10-21T07:28:06","slug":"quantum-attack-on-bitcoin","status":"publish","type":"post","link":"https:\/\/buycrypt.com\/blog\/en\/quantum-attack-on-bitcoin\/","title":{"rendered":"Quantum Attack on Bitcoin Requires Fewer Than 900 Qubits, Experts Warn"},"content":{"rendered":"<p>Experts are sounding the alarm that a quantum assault on Bitcoin is imminent, and at a quicker pace than previously thought. The consensus among them is that it would take under 900 qubits to break into the network, well below the 1,157 qubits once put forward as the required number.<\/p>\n<h2>Expert Warnings and Lowered Qubit Threshold<\/h2>\n<p>While present-day quantum computers have a capacity of no more than 55 qubits, the danger has not gone unnoticed. As told to Digital Asset News, an attack on Bitcoin would require fewer than 900 qubits, a marked departure from the 1,157 previously considered necessary for a breach. Such figures have given the crypto community cause for concern over the direction of quantum computing and its implications for blockchain security.<\/p>\n<h2>Current Quantum Computing Capabilities<\/h2>\n<p>There is still some distance between the 55 qubits currently available and what would be required to pose a direct threat to Bitcoin, but with quantum hardware improving, the gap is closing and calls are being made for a more forward-thinking approach to potential vulnerabilities.<\/p>\n<h2>Vulnerabilities in Blockchain Signatures<\/h2>\n<p>The way a quantum computer could exploit a blockchain\u2019s weak points is through Shor\u2019s algorithm, which can break elliptic curve digital signatures; these are the cryptographic standard for wallet protection on every major chain. Should a public key be exposed, there is the possibility of an account being compromised, a matter of industry-wide concern.<\/p>\n<h2>Industry Response and Ongoing Risks<\/h2>\n<p>In response, nine crypto firms have banded together in an alliance to defend against quantum threats, cautioning that around 6 million bitcoins, or a third of all that exist, are vulnerable to such an attack. Yet according to Digital Asset News, three organizations one might expect to be at the forefront of quantum security have been disconcertingly uninvolved. If the technology develops ahead of schedule, that kind of apathy could be costly.<\/p>\n<p class=\"blogger-link\"><em>Every call by Digital Asset News and how it played out \u2014 <a href=\"https:\/\/buycrypt.com\/traders\/bloggers\/digital-asset-news\/\">in the BuyCrypt bloggers tracker<\/a>.<\/em><\/p>\n<p class=\"forpost-source\"><em>Source \u2014 Digital Asset News: <a href=\"https:\/\/www.youtube.com\/watch?v=eENgDWY8AeI\" target=\"_blank\" rel=\"noopener nofollow\">https:\/\/www.youtube.com\/watch?v=eENgDWY8AeI<\/a><\/em><\/p>\n<p><!-- money-cta --><\/p>\n<p>Explore our crypto trading simulator to practice and enhance your strategies safely amid evolving security challenges like quantum threats. <a href=\"https:\/\/buycrypt.com\/crypto-trading-simulator\">crypto trading simulator<\/a>.<\/p>\n<p><!-- related-seo --><\/p>\n<div class=\"related-seo\">\n<h3>Related articles<\/h3>\n<ul>\n<li><a href=\"https:\/\/buycrypt.com\/blog\/en\/algorand-quantum-resistant\/\">Algorand Leads Quantum-Resistant Race: Falcon 1024 Adoption Explained<\/a><\/li>\n<li><a href=\"https:\/\/buycrypt.com\/blog\/en\/ai-threatens-cryptocurrency-security\/\">AI Threatens Cryptocurrency Security: Ethereum and Bitcoin Response<\/a><\/li>\n<li><a href=\"https:\/\/buycrypt.com\/blog\/en\/quantum-computer-bitcoin-hack\/\">Quantum computer bitcoin hack: 9-minute threat revealed by Google<\/a><\/li>\n<\/ul>\n<\/div>\n<p><!-- \/related-seo --><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Quantum attack on Bitcoin now needs under 900 qubits, experts say. Find out what this means for crypto security and why the threat is growing.<\/p>\n","protected":false},"author":8,"featured_media":55396,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"rank_math_title":"Quantum Attack on Bitcoin: Fewer Than 900 Qubits Needed","rank_math_description":"Quantum attack on Bitcoin now needs under 900 qubits, experts say. Find out what this means for crypto security and why the threat is growing.","rank_math_focus_keyword":"quantum attack on Bitcoin","_forpost_external_id":"1ecf8480-c5c3-47be-96ec-7ef8fdbdc141","_seorun_article_id":"ee3b185d-c1df-40d6-bc36-a8588f1a0862","footnotes":""},"categories":[369],"tags":[852,16953,2921,13455,16138,8645],"class_list":["post-55398","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news-en","tag-bitcoin-en","tag-blockchain-security","tag-crypto-news","tag-cryptography","tag-digital-asset-news","tag-quantum-computing","resize-featured-image"],"lang":"en","translations":{"en":55398,"ru":55397},"pll_sync_post":[],"_links":{"self":[{"href":"https:\/\/buycrypt.com\/blog\/wp-json\/wp\/v2\/posts\/55398","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/buycrypt.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/buycrypt.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/buycrypt.com\/blog\/wp-json\/wp\/v2\/users\/8"}],"replies":[{"embeddable":true,"href":"https:\/\/buycrypt.com\/blog\/wp-json\/wp\/v2\/comments?post=55398"}],"version-history":[{"count":0,"href":"https:\/\/buycrypt.com\/blog\/wp-json\/wp\/v2\/posts\/55398\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/buycrypt.com\/blog\/wp-json\/wp\/v2\/media\/55396"}],"wp:attachment":[{"href":"https:\/\/buycrypt.com\/blog\/wp-json\/wp\/v2\/media?parent=55398"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/buycrypt.com\/blog\/wp-json\/wp\/v2\/categories?post=55398"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/buycrypt.com\/blog\/wp-json\/wp\/v2\/tags?post=55398"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}