A Fortune report published on August 3, 2026, highlights a major security breach affecting Bitcoin users after a vulnerability in Coldcard hardware wallets, made by Coinkite, allowed hackers to drain millions of dollars in cryptocurrency. The exploit targeted flaws in the wallet’s seed-generation process, compromising the security of some devices designed to protect Bitcoin through offline storage.
According to security researchers, attackers drained more than 1,000 Bitcoin from nearly 1,200 wallets, with estimated losses approaching $89 million. The incident has raised concerns across the cryptocurrency industry because hardware wallets are considered one of the safest methods for storing digital assets. Coinkite has advised affected users to migrate funds to newly generated wallets and has issued updates to address the vulnerability.
The breach has renewed debate over cryptocurrency security, highlighting the importance of robust key-generation systems, firmware testing, and user protection practices. The incident also underscores that even offline storage solutions can face risks if vulnerabilities exist within the underlying technology
