BigONE exchange's hot wallet was attacked, resulting in losses of over 27 million USD and a commitment to refund 100%

On July 16, the cryptocurrency exchange BigONE (Seychelles) confirmed it was the victim of a serious security attack, leading to losses exceeding 27 million USD in various assets such as $BTC , $ETH , $SOL , USDT, SHIB, CELR... According to SlowMist, this was a supply chain attack, where the attacker intervened in the server's operational logic without needing to obtain the private key.

Commitment to compensation and concerns from the community

#BigONE confirmed that the entire private key of the exchange's wallet remains secure and has mitigated the damage. The exchange has committed to refunding 100% of the losses to users through a reserve fund and borrowing externally to supplement liquidity. Deposit and trading services will be reopened soon, while withdrawals will resume after security upgrades.

However, on-chain detective ZachXBT expressed little sympathy, stating that BigONE has long been handling large volumes from scams such as "romance scam" or "pig butchering". This incident marks another large-scale exchange hack in 2025, bringing the total value of hacked crypto since the beginning of the year to over 2.1 billion USD. #Hacker