BigONE, a crypto exchange, has been hacked, stealing over $27 million in digital assets. Lookonchain reports the hacker made off with Bitcoin (BTC), Ethereum (ETH), TRON (TRX), and Solana (SOL).

Let’s break it down: The hacker’s wallets now hold 120 BTC worth $14.15 million, 23.3 million TRX ($7 million), 1,272 ETH ($4 million), and 2,625 SOL ($428,000). Not too shabby, right?
The #BigONE exchange was hacked and lost over $27M.
— Lookonchain (@lookonchain) July 16, 2025
Currently, the hacker has exchanged the stolen assets for 120 $BTC($14.15M), 23.316M $TRX($7.01M), 1,272 $ETH($4M) and 2,625 $SOL($428K).
Address:
bc1qwxm53zya6cuflxhcxy84t4c4wrmgrwqzd07jxm
TCAfB8jHbJ56xwmfwKwWEs8HLRjbC2GfHG… pic.twitter.com/RXfSb7jgt0
The drama unfolded just minutes before Certik Alerts flagged the outflows of large tokens from BigONE. The hacker didn’t waste time and now holds around $4 million worth of ETH, just two hours ago.
#CertiKInsight 🚨
— CertiK Alert (@CertiKAlert) July 16, 2025
We have seen multiple large token outflows from 0xd4dcd2459bb78d7a645aa7e196857d421b10d93f that are related to the latest BigONE security incident.
The exploiter now holds ~$4M in ETH and multiple other tokens (may not be liquidatable ) at… pic.twitter.com/qWM0rFfNbB
Blockchain security firm SlowMist confirmed that the breach was caused by a supply chain attack, where the attacker tampered with server logic related to account and risk control, leading to unauthorized withdrawals. No private keys were leaked, but the security firms have already traced the attacker’s address.
Here’s the juicy part:
Ethereum & BSC: 0x9Bf7a4dDcA405929dba1FBB136F764F5892A8a7a
Solana: HSr1FNv266zCnVtUdZhfYrhgWx1a4LNEpMPDymQzPg4R
Bitcoin: bc1qwxm53zya6cuflxhcxy84t4c4wrmgrwqzd07jxm
Tron: TKKGH8bwmEEvyp3QkzDCbK61EwCHXdo17c
Now, here’s where things get spicy. Blockchain investigator ZachXBT, who’s no stranger to these kinds of scams, didn’t hold back in his commentary. He called out BigONE for previously processing “a good bit of volume” tied to pig butchering, romance, and investment scams. Ouch. Looks like the hacker wasn’t the only bad actor here.

This latest breach comes after the infamous Bybit hack and the recent Nobitex security failure. Is anyone else starting to wonder just how secure these platforms really are?
BigONE Promises to Cover All Losses
While the hacker tries to move stolen assets across various chains and exchanges, BigONE has pledged to cover the losses using its own reserves. The exchange has temporarily suspended trading and deposits to prevent further damage.
Rest assured, BigONE says it will keep the community updated with full transparency on the investigation’s progress and handling. Be prepared for a bumpy ride.

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