A suspected fourth wave of coordinated attacks targeting Coldcard hardware wallets has resulted in the theft of 389 Bitcoin, valued at approximately $10.5 million, according to research from Galaxy Research.
The incidents mark a continuation of security concerns that have periodically affected the cryptocurrency hardware wallet provider, which manufactures offline storage devices designed to secure digital asset holdings. The latest attack wave has prompted urgent warnings to affected users regarding the limited timeframe available for potential fund recovery.
Galaxy Research’s head of institutional analysis flagged the breach in recent communications, emphasizing the critical nature of the situation for compromised account holders. The vulnerability appears to have enabled attackers to access and transfer Bitcoin holdings from users who believed their assets were secured through the hardware wallet’s offline architecture.
Security Implications for Hardware Wallet Users
The incident underscores persistent challenges within the cryptocurrency custody infrastructure, where hardware wallets are marketed as among the most secure storage mechanisms available to retail and institutional investors. The attacks suggest that despite the offline nature of these devices, vulnerabilities in either the manufacturing process, supply chain, or user interaction layers may create exploitable attack vectors.
Hardware wallets have historically been positioned as a more secure alternative to exchange-based custody solutions, particularly following several high-profile cryptocurrency exchange breaches over the past decade. However, repeated attack waves targeting specific manufacturers indicate that security assumptions surrounding these devices warrant reassessment.
Recovery Window Creates Urgency
The warning from Galaxy Research regarding a narrow recovery opportunity suggests that stolen Bitcoin may still be traceable on the blockchain, and affected users may have limited time to pursue recovery mechanisms through law enforcement or blockchain analysis services. The public nature of Bitcoin transactions means that the movement of stolen funds across the network creates an opportunity for identification and potential intervention.
Users who suspect their Coldcard devices have been compromised face a choice between immediate action to recover funds or accepting losses. The exact nature of the vulnerability—whether originating from device firmware, manufacturing defects, or user compromise—remains unclear from available information.
Broader Regulatory Context
The incident carries implications for European financial regulation, particularly as authorities across the EU continue developing frameworks for cryptocurrency service providers and custodians. The Markets in Crypto Assets Regulation (MiCA), which came into force in December 2023, establishes requirements for cryptocurrency exchange operators and custodians, though hardware wallet manufacturers occupy a less clearly defined regulatory category.
As institutional adoption of cryptocurrency assets accelerates across European financial markets, the security standards applicable to custody solutions increasingly attract regulatory scrutiny. Whether hardware wallet manufacturers should face comparable compliance obligations to licensed custodians remains an open question for EU regulators.