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Coldcard Bitcoin Thief Likely Used Top Blockchain Services Provider: Report
Bitcoin magazine ^ | 31 July 26 | Mathew DiSalvo

Posted on 08/01/2026 1:41:07 PM PDT by delta7

Experts have since said that those holding Bitcoin on a Coldcard device should move funds now.

Since over $70 million in Bitcoin was stolen yesterday by an attack that exploited a fault in the Coldcard’s system, it has been reported that the thief used a top blockchain services provider for help.

Writing on X Friday, engineer at payments company Block, Clay Garrett, said that the provider — who he did not name at the request of the services provider — had been contacted after finding blockchain movements matched the “suspected workflow” of the attacker.

“During our investigation of the Coldcard drain yesterday, we identified an unusual pattern in the sweeps,” Garrett said.

“That pattern led us to a hypothesis that has since been confirmed: the operator used a paid account at a well-known blockchain-services provider to query the source addresses and perform other related activity during the sweeps,” Garrett continued, adding that the authorities had been notified.

Galaxy Digital’s research arm also wrote on X that the thief had an unusual pattern of moving the coins.

“The pattern tells us these were all the same attacker — it does not capture the attack itself, which looks the same as if a coin owner chose to move coins,” the company said, adding that Bitcoiners should move funds out of single-signature Coldcard addresses and into secure custody.

After over $35 million in Bitcoin was drained from wallets on Thursday, Coinkite said that a firmware bug in Coldcard Mk3 devices — starting with version 4.0.1 in March 2021 — caused seed generation to fall back to a weak software Pseudorandom Number Generator instead of the hardware true random number generator.

This allowed private keys for many single-signature wallets (especially those created without dice rolls or a strong BIP-39 passphrase) predictable enough for attackers to brute-force.

Later on Friday, Coinkite admitted all of its models were vulnerable following more thefts. Over $70 million has so far been swiped and engineers have warned that more Bitcoin addresses could be at risk.


TOPICS:
KEYWORDS: bitcoin
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Well, well, well.....say it ain't so....

With huge losses YOY, this could finally sink the Bismark.

* 128,00 down now to 62,000, YOY. The E money digital types are learning a hard lesson in what " money" is.

1 posted on 08/01/2026 1:41:07 PM PDT by delta7
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To: delta7
Another "Bitcoin bad, real money wins" post from delta7.

A security flaw in one hardware wallet leads to thefts, therefore the entire asset class is doomed?

Bitcoin has had plenty of growing pains and hacks over the years, but it’s still here.

Meanwhile, the same crowd pushing gold as the ultimate safe haven has been calling for the dollar’s imminent collapse and gold to the moon for over a decade with mixed results. Both assets have risks. One is decentralized digital scarcity, the other is physical with storage and central bank manipulation issues. Acting like one hack proves your preferred narrative is just the usual tribal cheerleading.
2 posted on 08/01/2026 1:53:31 PM PDT by CandyFloss
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To: CandyFloss

I only post the news. Do with the facts as you may. You are a big boy, Keep buying your Bitcoin and Digital currencies.


3 posted on 08/01/2026 1:58:05 PM PDT by delta7
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To: delta7

When the globalists eventually get their mandatory social credit score system in place, offline Bitcoin might be the only other game in town.


4 posted on 08/01/2026 1:59:54 PM PDT by E. Pluribus Unum (Israel First. America... who cares?)
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To: CandyFloss

...for your viewing enjoyment.

“A second Coldcard hack has been reported. A total of 1,158.81 more $BTC
has been stolen from 2,673 addresses so far, according to Galaxy Research.”

.....sink the Bismark comes to mind.


5 posted on 08/01/2026 2:03:02 PM PDT by delta7
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To: CandyFloss

You Bitcoiner e money pumpers need to stay up to speed. What would your wonderful thoughts be about Michael Saylor’s Strategy authorizing the sale of up to $5,000,000,000.00 more in Bitcoin?

Please oh great one explain this away.


6 posted on 08/01/2026 2:13:32 PM PDT by delta7
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To: delta7

“firmware bug” or backdoor?


7 posted on 08/01/2026 2:13:59 PM PDT by Mr Radical (In times of universal deceit, telling the truth is a revolutionary act.)
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To: delta7

“128,00 down now to 62,000, YOY. The E money digital types are learning a hard lesson in what “ money” is.”

$121 down to $58 now. You really tool a haircut on silver.

What I don’t understand is why you were selling every thing to buy silver at $121 when Socrates was telling you to a crash was coming?.


8 posted on 08/01/2026 2:21:12 PM PDT by TexasGator (\'1/1.1Yn.11-1i11'./1)
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To: delta7

“What would your wonderful thoughts be about Michael Saylor’s Strategy authorizing the sale of up to $5,000,000,000.00 more in Bitcoin?

Please oh great one explain this away.”

Easy. Just another example of your misinformation.

Easy. It is an authorization. Not a sale.

Saylor is bullish on bitcoin and says the company will remain a net buyer.


9 posted on 08/01/2026 2:26:45 PM PDT by TexasGator (\'1/1.1Yn.11-1i11'./1)
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To: Mr Radical

firmware bug” or backdoor?


No idea, I only deal in honest money, as specified in our Constitution. These “money” fads have come and gone for centuries, tulip bulbs come to mind.

Anything that is only an electron on a screen, depends on electricity, an unknown computer program , has no intrinsic value, can not hold in your hand is not for me. Best to stick with time tested Wealth....land, property, equities only if they are registered with the DNTC, PM’s, and to some degree paper currencies for spending only.

That’s how us older, wiser guys accumulated our Wealth.


10 posted on 08/01/2026 2:28:25 PM PDT by delta7
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To: CandyFloss; delta7

“One is decentralized digital scarcity, the other is physical with storage”

Never store gold in your mother’s basement!


11 posted on 08/01/2026 2:29:56 PM PDT by TexasGator (\'1/1.1Yn.11-1i11'./1)
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To: delta7

Dollars can be embezzled or stolen by “brute force”. We’re learning that, if you have enough to matter, you want your money in more than one form and more than one location.

So that one bad bank, one stock market crash, one bad lawsuit, one hostile government, one burglar doesn’t wipe you out.


12 posted on 08/01/2026 4:04:06 PM PDT by marron
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To: CandyFloss

You might find this interesting.


He’s even a member of an organization called the American Philatelic Society, which is a fancy name for stamp collectors. Or at least Martin was a member of the American Philatelic Society, but as of today, he’s been kicked out.

The group has been getting complaints from Martin’s customers who say he hasn’t been fulfilling stamp orders, and when they ask for a refund, he refuses, which means either Martin has the rare items and just doesn’t want to part with them, or he’s pretending to hold stamps he doesn’t actually have.

https://podscripts.co/podcasts/scamfluencers/martin-armstrong-the-man-who-bet-billions-on-pi-224


13 posted on 08/01/2026 4:59:02 PM PDT by TexasGator (\'1/1.1Yn.11-1i11'./1)
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To: marron

“Dollars can be embezzled ... “

He knows all about that.

https://www.reuters.com/article/markets/us/ex-trader-armstrong-sentenced-to-5-years-idUSN10425035/

“you want your money in more than one form and more than one location. So that one bad bank, one stock market crash, one bad lawsuit, one hostile government, one burglar doesn’t wipe you out.”

He knows all about that.

https://caselaw.findlaw.com/court/us-2nd-circuit/1084705.html


14 posted on 08/01/2026 5:57:21 PM PDT by TexasGator (\'1/1.1Yn.11-1i11'./1)
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To: CandyFloss
In other news, users of the BitMart exchange are experiencing widespread withdrawal delays, freezes, and rejections.

15 posted on 08/01/2026 6:34:47 PM PDT by chud
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To: delta7
***Anything that is only an electron on a screen, depends on electricity, an unknown computer program , has no intrinsic value, can not hold in your hand is not for me***

Exactly! I am just a worn out old scrambler, took a few chances here and there, nearing the checkout counter now with a little better than pauper status -- but what I own is mine and I own it, can produce it, barter it if desired... am comfortable and leaving a little to my offspring - no debt for sure!

When Bitcoin first appeared I didn't understand it, it was cheap and easy to obtain, I just had to go to a pizza place across town and purchase a wallet, whatever, and remember a secure password. That is it! No proof of purchase, no gold card - nothing. Had I made the purchase then I suppose ideally I could be rich - if I could prove that I owned something... not for me!

At least a silver dollar is worth a dollar - I think, maybe more, maybe less. I can show physical proof of almost everything I own. If I missed out on some big chances - so be it. I am quite comfortable!

16 posted on 08/01/2026 6:37:09 PM PDT by Bob Ireland (The Democrap Party is the enemy of freedom.They use all the seductions and deceits of the Bolshevics)
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To: delta7

“That’s how us older, wiser guys accumulated our Wealth.”

You were selling everything to buy silver at $121 the day before the crash. You lost half.


17 posted on 08/01/2026 9:15:33 PM PDT by TexasGator (\'1/1.1Yn.11-1i11'./1)
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To: Bob Ireland

https://freerepublic.com/focus/news/4371234/posts?page=28#28


18 posted on 08/01/2026 9:17:45 PM PDT by TexasGator (\'1/1.1Yn.11-1i11'./1)
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