r/Bitcoin: news report of $70 million drained in 41 minutes
reddit-70m-41-minutes-report
https://www.reddit.com/r/Bitcoin/comments/1vdt92h/a_coldcard_firmware_flaw_let_hackers_drain_70/
Latest reviewed change
source content difference between and
A comment by DonTheHolder telling victims to let professionals manage their coins was removed; author and body now show [deleted]/[removed].
comment: p1e7sz9
parent: t3_1vdt92h
-author: DonTheHolder
+author: [deleted]
created_utc: 1785736243
edited: false
body:
First lines only. The complete diff is in the timeline below.
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Held captures
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A comment by DonTheHolder telling victims to let professionals manage their coins was removed; author and body now show [deleted]/[removed].
Recovered from the Internet Archive rather than captured by this project. The row records that third-party provenance separately from captures made by this project.
What changed from the previous capture 6 lines
comment: p1e7sz9 parent: t3_1vdt92h -author: DonTheHolder +author: [deleted] created_utc: 1785736243 edited: false body: -They are broken and broke. They trusted their bag with a hardware wallet creator instead of security professionals and other safety factors and switches that come into play that are secured with stocks as ETFS and CEX COINBASES. - -You're not nerd enough to protect your coin. Let a professional company manage them properly. +[removed] comment: p1e9pj3 parent: t3_1vdt92hExtracted text as captured
post: 1vdt92h author: ThePrince1856 created_utc: 1785703973 title: A Coldcard firmware flaw let hackers drain $70 million in Bitcoin in 41 minutes, with losses now topping $88 million body: **“A hardware wallet is supposed to solve one problem: keep your Bitcoin keys somewhere no attacker can reach them. This week showed what happens when the flaw sits inside the wallet itself. A firmware bug that's been shipping in Coldcard devices since 2021 let an attacker guess supposedly random seed phrases from the outside, no physical access, no phishing, no malware required, and drain funds from thousands of addresses. The running total is already past $88 million, and it's still climbing.** A flaw in Coldcard's firmware has put the spotlight on a basic part of wallet security: how the device generates its seed in the first place. The issue came into focus after an attacker drained 1,196 Bitcoin addresses on July 30 in a 41-minute stretch, taking 1,082.65 BTC worth about $70.2 million at the time. Galaxy Research tied the sweep to Coldcard, the Bitcoin-only hardware wallet line made by Coinkite, and said the pattern matched a firmware problem rather than a random event. Two more waves have surfaced since, and Galaxy's running total now stands at 1,367.05 BTC, worth about $88.6 million, across 4,585 addresses. The firm describes that as a preliminary observed figure that could still climb as it traces more on-chain activity. The [problem](https://thehackernews.com/2026/08/coldcard-hardware-wallet-flaw-linked-to.html) goes back to a March 2021 firmware integration error. Instead of using the STM32 hardware random number generator, affected devices fell back to a deterministic software pseudorandom number generator when creating seeds. That matters because seed generation is supposed to produce output that cannot be guessed or reconstructed.” comment: p1bp8lt parent: t3_1vdt92h author: FastJuice3729 created_utc: 1785704073 edited: false body: Is this a larger heist than BITCONNEEEEEE? comment: p1bpk26 parent: t3_1vdt92h author: astro-the-creator created_utc: 1785704164 edited: false body: That should be class action lawsuits comment: p1bubay parent: t1_p1bpk26 author: MycoFail created_utc: 1785705545 edited: false body: Lol against whom comment: p1bul66 parent: t1_p1bubay author: astro-the-creatorExcerpt only. The complete copy is held offline and backs quotations on this site. The original publication remains the canonical public source.
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Recovered from the Internet Archive rather than captured by this project. The row records that third-party provenance separately from captures made by this project.
What changed from the previous capture 0 lines
Extracted text as captured
post: 1vdt92h author: ThePrince1856 created_utc: 1785703973 title: A Coldcard firmware flaw let hackers drain $70 million in Bitcoin in 41 minutes, with losses now topping $88 million body: **“A hardware wallet is supposed to solve one problem: keep your Bitcoin keys somewhere no attacker can reach them. This week showed what happens when the flaw sits inside the wallet itself. A firmware bug that's been shipping in Coldcard devices since 2021 let an attacker guess supposedly random seed phrases from the outside, no physical access, no phishing, no malware required, and drain funds from thousands of addresses. The running total is already past $88 million, and it's still climbing.** A flaw in Coldcard's firmware has put the spotlight on a basic part of wallet security: how the device generates its seed in the first place. The issue came into focus after an attacker drained 1,196 Bitcoin addresses on July 30 in a 41-minute stretch, taking 1,082.65 BTC worth about $70.2 million at the time. Galaxy Research tied the sweep to Coldcard, the Bitcoin-only hardware wallet line made by Coinkite, and said the pattern matched a firmware problem rather than a random event. Two more waves have surfaced since, and Galaxy's running total now stands at 1,367.05 BTC, worth about $88.6 million, across 4,585 addresses. The firm describes that as a preliminary observed figure that could still climb as it traces more on-chain activity. The [problem](https://thehackernews.com/2026/08/coldcard-hardware-wallet-flaw-linked-to.html) goes back to a March 2021 firmware integration error. Instead of using the STM32 hardware random number generator, affected devices fell back to a deterministic software pseudorandom number generator when creating seeds. That matters because seed generation is supposed to produce output that cannot be guessed or reconstructed.” comment: p1bp8lt parent: t3_1vdt92h author: FastJuice3729 created_utc: 1785704073 edited: false body: Is this a larger heist than BITCONNEEEEEE? comment: p1bpk26 parent: t3_1vdt92h author: astro-the-creator created_utc: 1785704164 edited: false body: That should be class action lawsuits comment: p1bubay parent: t1_p1bpk26 author: MycoFail created_utc: 1785705545 edited: false body: Lol against whom comment: p1bul66 parent: t1_p1bubay author: astro-the-creatorExcerpt only. The complete copy is held offline and backs quotations on this site. The original publication remains the canonical public source.
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