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

> **Open Intelligence Dossier** · First detected: 2026-08-03 02:07 UTC · Category: Business

## Executive Summary
A massive security breach targeting Coldcard wallets has resulted in the theft of up to $89 million in Bitcoin from over 1,200 addresses.

## Intelligence Brief
This incident represents a critical failure in a hardware solution designed specifically to prevent unauthorized access to digital assets. Bloomberg.com emphasizes that the attackers are targeting what is often perceived as Bitcoin's safest hiding place. The magnitude of the financial loss and the number of compromised addresses serve as the primary evidence of the attack's effectiveness and scope.


These devices are engineered to keep private keys offline, thereby isolating them from internet-connected threats and reducing the risk of remote hacking. This undermines the fundamental trust users place in cold storage as a foolproof method for protecting long-term Bitcoin holdings from digital theft. Future developments to monitor include whether more addresses are compromised and if a specific vulnerability in the Coldcard hardware or software is identified.


Based on the current facts provided by Bloomberg.com, the attack is classified as ongoing. Observers will be looking for updates on whether the $89 million total increases and if any recovery efforts are initiated to trace the stolen Bitcoin. The situation remains fluid as the industry assesses the full extent of the security failure regarding these specific hardware wallets.

## Multi-Source Evidence Table
| Source Outlet | Headline | Verification URL |
|---|---|---|
| Barron's | Bitcoin Drops on Double Whammy From $89M Security Breach and Strategy Sale | [Source Link](https://news.google.com/rss/articles/CBMijwFBVV95cUxNbUNVSlpwb1NDMHNjYmVtSE13alNRQWVQaG1heGhFME1scVoxczJhY0Z0NUgwajZNMjBOdnVFdWk4V1Y4X3NFMmFOVUZGaDFmSlpPMGhpVDFFWWdWM2ZDU1A0TjhkUVIxUkNpSzZZT09nekN3SWxod2ZtaHJlMkY4NmwycjRfZmc2SERnSVFSdw?oc=5) |
| CoinDesk | Bitcoin (BTC), ether (ETH) prices decline as Coldcard exploit enters a fifth day: Crypto Markets Today | [Source Link](https://news.google.com/rss/articles/CBMipwFBVV95cUxOSElybTBRRWlXTU1tclF5TWVRRnJvc1Y5Smd2eGh0Mm5aTE1CTE03LTZQYjAtNGJRNmlBdzA1bE4wcGhDS0VkUHpDMEtKWF8tUHlKLUtxNEhEVXJFZjlqUmxZSTB6MGlaTTctbzAzckZ1QjlCd2hBXzAyc1M1Tk5LQkdPcTFpZmozQmZ3VnZ0Y0R0UXZmdUJ4cWF6dkdTNnpmTHdERzFJWQ?oc=5) |
| CoinDesk | Coldcard wallet losses may near $114 million as possible fourth sweep emerges | [Source Link](https://news.google.com/rss/articles/CBMivAFBVV95cUxNNFAwOUFoWDVGSnpMTm8yVVV3YVQ0akhic19sXzZTZUwxalQ3enhXcDJIMXlOckdzU2NoWks2TXN5N3A2TURpMldidHllV2tKLWdwLWpaNjNhWk5nMEVHZll5eWhaS3BhYTYwMk05eGhiSktrTGtLdzlqUzFockk3TV93RC0wMVRUbnFJVERkcHJyWExaaEVPOWRTX0FwVW1mbGJaNDdvTUY2LXBiN2UxQVFpMVczT0VPbEdNUg?oc=5) |
| TradingView | Suspected 4th Coldcard attack wave sweeps 389 Bitcoin: Galaxy’s Thorn | [Source Link](https://news.google.com/rss/articles/CBMizAFBVV95cUxQM05qZnR2MjBwWW1sbV8zRGRXeVE2S0lyQlZaTFZpWjNQR180YUJ5UU5jY0FkMVIzZXY1RzZoU29ZcjdDeUZfQ1dYM3NhTVFCclQxbWxnY0NhdGMxMnJ3bHU1bUV3SXFoODVwS2JkOTMyUUk2ZnZDdGNwcUNEWTQtQWgzclNEeHJlTm1ELVFfZDREdG9MS1JFYkZHdjhRWVV6ZEdJYXIwYmJKRkJSQWMyR2R3Q0tlZ2tFb01wLVNnY1JRelpXLWdYSmZiZlg?oc=5) |
| CoinDesk | Major bitcoin wallet flaw drains 594 BTC in 25-minute sweep | [Source Link](https://news.google.com/rss/articles/CBMiogFBVV95cUxOTFp1aUw0U1pSTTdTM1pTVDJzTjdBZllYalZCSG1iVUxjckU0OGxjNlRqc21WMHdzTHNuY3dORGNfOUxnZ0tsTGVZTjVtYzV0RGtGaURJZFRMLThqUTlBU0MwZVBuQ1lsQXBxamM2TnA4WU80OXdTcW5jV3VqQWV0OEVJLUxscjZDajFwWU5idGFiZEtLNmFDRlhYS0VIQVctQWc?oc=5) |
| The Block | Bitcoin losses linked to Coldcard vulnerability grow to $70 million, Galaxy Research says | [Source Link](https://news.google.com/rss/articles/CBMiqwFBVV95cUxQX1VfSVNYWmlibHU4Q19FYjRBNFB1NUdTRmliVVhEWDlJcjc3bzZhN2JBSUxfX1JYbVY5RDhEU3RhS1BMczNYWVV0cGNIaGJaeUN5ZEo3ZlJ2VkhLUjVMeTYwX0xPdnRyWm14dkNjWWNCTjVXeW41cm9DdXozdVdDdmFvcTJQWnd2OHd5RzlwTnBWTXM3akFSTk9zOG9kaHN4azZVc2hHcEhwckE?oc=5) |
| Bloomberg.com | Hackers Target Bitcoin’s Safest Hiding Place in Ongoing Attack | [Source Link](https://news.google.com/rss/articles/CBMiswFBVV95cUxPVXM4Q0NxZ05lNGNPTWdRVVJyX0lzYXVBODd0MHNYbi1kMWRlbmdSMlBrYXRTSzAxd0hPTHlndTI1akN3Z3BSZF9XcnNNNG5sR3dzN0ZwM1NTemRiZmVpX1g0SzBGOXJRaE1mVm1xcy1VOFhJRC1QbnB1ODJZdXZzb1BSZnFhRXd1MlZ3VUJySnN6WlRqOUZRTEY2R1FJMy1paFFKV0tmUEN6eGUzREsyMzB4VQ?oc=5) |

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*Canonical Source: https://pulse.byoviral.com/trend/2026-08-03/coldcard-wallet-attack-drains-up-to-89m-in-bitcoin-from-1-200-addresses*