Coldcard Bitcoin Hack: Victims Report Median Loss of 1 BTC as Theft Tops $111 Million
Victims of the Coldcard Bitcoin hack reported a median loss of 1 BTC, with a total of $111 million confirmed stolen. The hack was caused by a firmware bug in Coldcard Mk3 devices, which allowed hackers to guess investor seedphrases.
Intelligence analysis by Llama

A recent hack of Coldcard Bitcoin devices has resulted in the theft of $111 million, with victims reporting a median loss of 1 BTC. The hack was caused by a firmware bug that allowed hackers to guess investor seedphrases.
Imagine you have a special box that keeps your money safe. But someone finds a way to guess the combination to the box, and they steal all your money. That's what happened to some people who used a special kind of box called a Coldcard to keep their Bitcoin safe. The box had a bug that made it easy for hackers to guess the combination, and they stole a lot of money. Now, people are worried about how to keep their money safe from hackers.
Analysis
Coldcard Hack: A Wake-Up Call for Crypto Investors
The recent hack of Coldcard Bitcoin devices has sent shockwaves through the cryptocurrency community, with victims reporting a median loss of 1 BTC and a total of $111 million confirmed stolen. The hack was caused by a firmware bug in Coldcard Mk3 devices, which allowed hackers to guess investor seedphrases.
The bug, which was introduced in version 4.0.1 of the Coldcard firmware in March 2021, caused the device to fall back to a weak software pseudorandom number generator instead of the hardware true random number generator. This allowed hackers to essentially guess investor seedphrases, resulting in the theft of millions of dollars worth of Bitcoin.
The hack has highlighted the importance of secure storage solutions for cryptocurrency investors. Coldcard, the company behind the hacked devices, has urged investors to update their software or move their funds off the popular hardware wallet. However, the damage has already been done, with many investors left to pick up the pieces.
The Impact of the Hack
The impact of the hack has been significant, with many investors left to wonder how they can protect themselves from similar attacks in the future. The hack has also raised questions about the security of other hardware wallets and the need for greater regulation in the cryptocurrency industry.
What's Next?
As the cryptocurrency community continues to grapple with the aftermath of the hack, it's clear that something needs to be done to prevent similar attacks in the future. One possible solution is for hardware wallet manufacturers to implement more robust security measures, such as multi-factor authentication and regular software updates. Additionally, greater regulation in the cryptocurrency industry could help to prevent similar hacks from occurring in the future.
Key points
- A recent hack of Coldcard Bitcoin devices has resulted in the theft of $111 million, with victims reporting a median loss of 1 BTC.
- The hack was caused by a firmware bug in Coldcard Mk3 devices, which allowed hackers to guess investor seedphrases.
- Coldcard has urged investors to update their software or move their funds off the popular hardware wallet.
- The hack has highlighted the importance of secure storage solutions for cryptocurrency investors.
- Greater regulation in the cryptocurrency industry could help to prevent similar hacks from occurring in the future.
If the cryptocurrency community comes together to implement more robust security measures and greater regulation, it's possible that the industry can prevent similar hacks from occurring in the future. This could lead to greater trust and adoption of cryptocurrency, and potentially even more innovation and growth in the industry.
If the industry doesn't take steps to prevent similar hacks from occurring, it's possible that the damage could be even greater. This could lead to a loss of trust in cryptocurrency and a decline in adoption, potentially even leading to a collapse of the industry.



