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Hacking & intrusion

Coldcard wallet hack leads to large-scale Bitcoin theft

First reported · Last reported · 23 related reports

Coldcard crypto wallets were hacked and Bitcoin was stolen on a large scale, with a flaw in seed generation blamed as the cause of the attack. Estimated losses rose to more than $130 million as of 7 August. In September, 52.37 Bitcoin recovered by a white-hat hacker were placed in a recovery trust.

Key facts

Affected organisation
Being confirmed
Incident type
Hacking & intrusion
Occurred / detected
Not confirmed
Scale of damage
More than $130 million in crypto assets
Cause / method
Flaw in the wallet's seed generation
Location
Other countries

If your data was exposed

Exposed dataCrypto assets

  1. Check login and withdrawal history in your exchange app, and turn on withdrawal address whitelisting and withdrawal delays.

Timeline

  1. A warning was issued about hacking damage exploiting a seed generation flaw in cold wallets.
  2. Coldcard hacking losses were tallied at 1,367 Bitcoin, about $89 million.
  3. The amount of Bitcoin stolen from Coldcard users grew to 1,816.
  4. Estimated losses from the Coldcard wallet hack rose to more than $130 million.
  5. 52.37 Bitcoin recovered by a white-hat hacker were placed in a recovery trust.

23 related reports

The summary and key facts are written by AI from related reports and may contain errors. Check the original articles and the organisation’s official statements for accurate details.