Bitcoin Cold Wallet Attack Expands to 4,500 Addresses, Losses Approach $89 Million

The ongoing Bitcoin (BTC) cold wallet security breach has escalated significantly, now impacting over 4,500 unique addresses. According to the latest on-chain data, total losses from this sophisticated attack vector are nearing the $89 million mark, raising serious concerns about the safety of offline storage solutions. Security analysts note that the attackers have demonstrated a high level of technical sophistication, likely exploiting vulnerabilities in the firmware or supply chain of specific hardware wallet models. This incident serves as a critical reminder for BTC holders to verify the integrity of their devices and consider multi-signature setups to mitigate the risk of single-point-of-failure attacks. The crypto community is closely monitoring the movement of stolen funds, with several exchanges and blockchain analytics firms collaborating to blacklist the identified malicious addresses.