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Crypto Exchange BigONE Confirms $27M Hack, Vows Full User Compensation
BigONE is working with blockchain security firm SlowMist to track the stolen assets, with fund tracing already underway across Bitcoin, Ethereum, Tron, Solana, and BNB Chain.
Updated Jul 16, 2025, 5:10 p.m. Published Jul 16, 2025, 8:01 a.m.
What to know:
- Crypto exchange BigONE experienced a $27 million breach due to a hot wallet exploit on July 16, but all user funds will be reimbursed.
- BigONE is collaborating with blockchain security firm SlowMist to trace the stolen assets across multiple blockchains, including Bitcoin and Ethereum.
- User balances remain safe, with deposits and trading expected to resume soon, though withdrawals will be delayed for additional security measures.
Crypto exchange BigONE has confirmed a $27 million breach stemming from a hot wallet exploit on July 16 and states that all user funds will be fully reimbursed.
In an official statement, the exchange said it detected “abnormal movements” tied to a third-party attack and has since identified and contained the vector. All private keys remain secure, and no additional losses are expected.
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BigONE is working with blockchain security firm SlowMist to track the stolen assets, with fund tracing already underway across Bitcoin, ethereum, Tron, Solana, and BNB Chain, per a release.
What Was Stolen?
The stolen tokens span across major and minor assets, including:
- 120 BTC
- 350 ETH
- 9.5B SHIB
- 7.1M USDT (multi-chain)
- 538,000 DOGE
- 1,800 SOL
- 1 WBTC
- 20,730 XIN
- 15.7M CELR
- 25,487 UNI
- 16,071 LEO
BigONE said user balances are safe, and all losses will be covered in full using a combination of internal reserves (BTC, ETH, SOL, USDT, XIN) and external borrowing to restore liquidity for niche tokens.
Deposits and trading are expected to resume within hours, but withdrawals will be delayed until further security reinforcements are complete.
“We sincerely apologize for the impact this incident may have caused,” the team wrote. “All investigation progress and handling results will be communicated with full transparency.”
The incident marks yet another major exchange hack in 2025, pushing total crypto exploit losses beyond $2.1 billion for the year.
Read more: Crypto Investors Lost $2.5B to Hacks and Scams in the First Half of 2025: Certik
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