BigONE Confirms $27 Million Hack, Pledges to Fully Compensate Affected Users

BigONE Confirms $27M Hot Wallet Hack, Assures Full User Reimbursement

Crypto exchange BigONE has confirmed a $27 million security breach resulting from a hot wallet exploit on July 16, becoming the latest major exchange to fall victim to a cyberattack in 2025. The platform has pledged to fully reimburse all affected users.

In an official statement, BigONE said it detected abnormal transactions linked to a third-party attack. The threat vector has since been identified and contained, with all private keys remaining secure. No further losses are expected.

The exchange has partnered with blockchain security firm SlowMist to trace the stolen assets, with on-chain investigations already underway across Bitcoin, Ethereum, Tron, Solana, and BNB Chain.

Assets Stolen in the Attack

The breach involved a wide range of tokens, including both major cryptocurrencies and niche assets:

120 BTC
350 ETH
9.5 billion SHIB
7.1 million USDT (across multiple chains)
538,000 DOGE
1,800 SOL
1 WBTC
20,730 XIN
15.7 million CELR
25,487 UNI
16,071 LEO

BigONE emphasized that user balances remain intact and that all losses will be covered using a mix of internal reserves—denominated in BTC, ETH, SOL, USDT, and XIN—and external borrowing to replenish less liquid assets.

While trading and deposits are expected to resume within hours, the exchange has delayed withdrawals until additional security measures are in place.

“We sincerely apologize for the impact this incident may have caused,” BigONE stated. “We will provide transparent updates as the investigation progresses and recovery efforts continue.”

This incident adds to a mounting toll of crypto-related exploits in 2025, pushing total losses from exchange and protocol hacks above $2.1 billion year-to-date.