The BigONE exchange has reported a significant security incident resulting in an estimated loss of $27 million due to a breach of its hot wallet infrastructure. The breach was identified by the blockchain security platform SlowMist.
Hot Wallet Breach
On July 15, a significant cyberattack was detected, compromising the production network of the exchange. SlowMist indicated that the operating logic of account and risk control-related servers was altered, allowing the attacker to withdraw funds.
Stolen Assets Overview
BigONE confirmed the breach after its real-time monitoring system flagged abnormal asset movements. Preliminary reports suggest the stolen assets include 120 BTC, 350 ETH, and over 8 million USDT across four networks.
Response to the Cyberattack and Security Measures
The exchange stated that all private keys remain secure, and the attack path has been identified and contained to prevent further losses. BigONE is collaborating with SlowMist to trace the attacker’s wallet addresses and monitor the movement of the stolen funds. Additionally, the company pledged to cover all user losses using its internal security reserves.
After a temporary suspension, BigONE is restoring its services and continues to investigate the incident to ensure user asset protection.
