BigONE Exchange Loses $27 Million in Supply Chain Cyberattack

The BigONE cryptocurrency exchange experienced a $27 million loss on July 16, 2025, due to a sophisticated supply chain cyberattack. Hackers compromised the exchange's internal systems to approve unauthorized withdrawals, bypassing typical security measures. The stolen funds included Bitcoin, TRON, Ethereum, Solana, and USDT, which were quickly fragmented and moved across different blockchain networks to obscure tracking. BigONE temporarily suspended deposits and withdrawals but pledged to cover all user losses using internal reserves and external funding. Following the attack, BigONE faced allegations of processing funds from romance and pig butchering scams. The incident is part of a larger trend of increasing cryptocurrency security breaches, with nearly $2.1 billion stolen in the first half of 2025 alone.