{"rewrite":{"id":"r_3785aad797133d8c0394b031","clusterId":"c_ca218585919e8982e2567424","slug":"coldcard-wallet-flaw-tied-to-88-6m-bitcoin-theft","model":"deepseek-v4-flash:free","headline":"Coldcard Wallet Flaw Tied to $88.6M Bitcoin Theft","summary":"Galaxy Research says a vulnerability in COLDCARD hardware wallet firmware was exploited in three attack waves after July 30, 2026, stealing about $88.6 million in Bitcoin. The attacks hit thousands of wallets whose seeds came from a defective random number generator. Coinkite stopped shipping COLDCARD and destroyed inventory.","whyItMatters":"The theft happened 30 hours before Coinkite disclosed the vulnerability, and the scale of the loss points to automated attacks against wallets generated by a faulty RNG.","webCardHtml":"\u003cp\u003eGalaxy Research attributes the theft to a defective random number generator in COLDCARD firmware versions v4.0.0 through v5.0.3, released since March 2021. The attacks used a hardcoded fee rate of 30 satoshis per virtual byte and no change outputs, which the firm says indicates automated tools.\u003c/p\u003e\u003cp\u003eCoinkite, the Canadian manufacturer, said it stopped shipping COLDCARD immediately after confirming the flaw and destroyed all inventory. Other Coinkite products use a different codebase and are not affected, the company reported.\u003c/p\u003e","blueskyPost":"Galaxy Research links a COLDCARD firmware RNG flaw to $88.6M in Bitcoin stolen across three attack waves. Coinkite halted shipments and destroyed inventory.","twitterPost":"COLDCARD firmware RNG flaw likely behind $88.6M Bitcoin theft, per Galaxy Research. Coinkite stopped shipping and destroyed inventory.","threadsPost":null,"newsletterBlurb":"Galaxy Research says a defective random number generator in COLDCARD firmware led to three attack waves that stole about $88.6 million in Bitcoin. Coinkite halted shipments and destroyed inventory after confirming the vulnerability.","attributionJson":"[{\"source\":\"GIGAZINE\",\"url\":\"https://gigazine.net/news/20260803-coldcard-wallet-flaw-bitcoin-theft/\",\"title\":\"Three Waves of Attacks Exploiting Hardware Wallet 'COLDCARD' Vulnerability Steal Bitcoin Worth Approximately 14 Billion Yen in Total\"}]","lintFlagsJson":null,"lintHits":0,"costUsd":0,"inputTokens":4568,"outputTokens":486,"status":"published","repairAttempts":0,"nextRepairAt":null,"factsAttemptedAt":1786300683,"createdAt":"2026-08-09T18:34:45.000Z","publishedAt":"2026-08-09T18:36:44.000Z","updatedAt":"2026-08-09T18:34:45.000Z"},"cluster":{"id":"c_ca218585919e8982e2567424","canonicalTitle":"ハードウェアウォレット「COLDCARD」の脆弱性悪用による3波の攻撃で合計140億円相当のビットコインが盗まれる","representativeArticleId":"a_dc61024ba670c8fde107e0f7","sourceCount":1,"writtenSourceCount":1,"writeAttempts":0,"isSolo":true,"entitiesJson":"{\"anime_titles\":[],\"manga_titles\":[],\"work_titles\":[\"COLDCARD\"],\"studios\":[],\"people\":[],\"type\":\"news\",\"domain\":\"other\",\"is_roundup\":false}","contentType":"news","status":"published","firstSeenAt":"2026-08-03T04:50:00.000Z","lastSeenAt":"2026-08-03T04:50:00.000Z","updatedAt":"2026-08-09T18:36:45.000Z"},"attribution":[{"source":"GIGAZINE","url":"https://gigazine.net/news/20260803-coldcard-wallet-flaw-bitcoin-theft/","title":"ハードウェアウォレット「COLDCARD」の脆弱性悪用による3波の攻撃で合計140億円相当のビットコインが盗まれる"}],"entities":{"anime_titles":[],"manga_titles":[],"work_titles":["COLDCARD"],"studios":[],"people":[],"type":"news","domain":"other","is_roundup":false},"keyFacts":null}