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Coldcard wallet attack drains up to $89M in Bitcoin from 1,200+ addresses

Hackers have exploited a flaw in Coldcard wallets to steal Bitcoin worth up to $89M from over 1,200 addresses.

By · Published August 3, 2026 at 06:27 UTC · Updated August 5, 2026 at 19:55 UTC

6sources
8articles
5velocity
+0%since first seen
14d agofirst detected

Evidence dossier

Intelligence passport

61/100 Strong
6distinct sources shown
40velocity measurements
1language editions checked
Unsupported statements were removed before publicationbrief evidence status

Measured timeline

  1. Detected The first matching coverage entered the Archynetys cluster.
  2. Evidence threshold reached The story had enough independent coverage for an explanatory brief.
  3. Latest coverage observed Most recent article currently attached to this story cluster.
  4. Peak measured velocity The recorded velocity reached 5.
  5. Outcome review added Archynetys revisited the signal after coverage cooled.

Source diversity sample: Yahoo Finance · Barron's · CoinDesk · TradingView · The Block · Bloomberg.com.

How this dossier is built: methodology · AI policy · corrections.

📍 Where it landed

The story of the Coldcard wallet attack quieted without a definitive conclusion in the coverage. Bitcoin prices declined amidst reports of ongoing exploitation and increasing losses.

Epilogue added 11d ago, after coverage quieted.

The reporting (8)

What happened

The attack has been ongoing, with the latest wave sweeping 389 Bitcoin in a single sweep. The Block and CoinDesk both report that the losses have grown to $70M, according to Galaxy Research.

Bloomberg.com coverage describes the Coldcard as Bitcoin's safest hiding place, complicating the narrative of the attack. The attack has been described as a fourth wave, suggesting previous incidents.

The exact scale of the attack is unclear, as the total amount stolen varies across reports. The Block and CoinDesk both cite Galaxy Research, but the total amount stolen is not yet clear.

Synthesized by Archynetys from the headlines below under a strict no-invention contract. ✓ fact-checked: unsupported claims removed (86% supported) Updated 13d ago.

Questions people are asking

What is a Coldcard wallet?

A Coldcard wallet is a type of hardware wallet used to store Bitcoin securely.

How many Bitcoin were stolen in the latest attack?

The latest attack swept 389 Bitcoin.

How many addresses were affected?

Over 1,200 addresses have been affected.

Velocity

How fast coverage is spreading — measured hourly from article rate × source diversity. How this works →

Topics

Bitcoin Coldcard Hacking Cryptocurrency Cybersecurity Theft

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