Increased transaction volume within the Bitcoin network has been observed following a significant security breach affecting the Coldcard hardware wallet, beginning on July 30th.
The incident triggered an elevated level of activity within Bitcoin’s memory pool, with approximately 89,031 transactions awaiting confirmation by miners as of Tuesday. This figure represents the highest recorded volume in Bitcoin’s memory pool since February 2025. Data-tracking firms Blockchain.com and Santiment have noted a corresponding rise in active addresses – reaching 712,000 on July 30th – alongside a surge in transactions originating from large holders, or “whales,” totalling 61,800.
The breach has prompted renewed scrutiny of the security protocols associated with hardware wallets. Following the collapse of FTX in November 2022, direct custody of cryptocurrency assets through hardware wallets gained popularity as a long-term holding strategy amongst Bitcoin investors. Consequently, there have been reports of holders moving funds to exchanges and establishing multiple wallets.
Analysts suggest this heightened activity reflects immediate responses following the hack, with users seeking to mitigate potential losses. Confirmation rates within the memory pool remain critical for assessing the extent of the disruption and evaluating security measures surrounding Coldcard devices.
The situation highlights ongoing vulnerabilities within the cryptocurrency ecosystem and continues to underscore the importance of robust security practices across all stages of Bitcoin ownership.
Written by Daniel Brooks
Security Desk
