The coordinated attack happened across the TRON and Ethereum blockchains on Sunday (Aug. 9), CoinDesk reported, citing on-chain data reviewed by blockchain security researchers.
According to the report, the attacker began with a 5 USDT transaction before siphoning 6.04 million of the dollar-pegged stablecoin from eight TRON wallets in the space of an hour. On Ethereum, three wallets were simultaneously emptied of 1.89 million USDT and 77 ETH.
The CoinDesk report added that on-chain records show that the two chains were connected through cross-chain swapper Bridgers, linking what appeared to be individual operations into a single incident.
Coinsbuy refilled the drained wallets to within 0.05% of their pre-attack balances within 24 hours, the report said. Researchers say this suggests the company does not think private keys have been compromised.
The company told CoinDesk that the breaches have been “contained” and that “all affected amounts have been covered in full by the company from its own reserves.”
“No client has borne any loss. The platform is stable and operating normally. Investigation is underway, and we cannot disclose further technical details at this stage,” Coinsbuy added.
