According to @lookonchain, the wallet attributed to the hacker who stole over $300M from Coinbase users bought 3,976 ETH for approximately $18.9M at an average price of $4,756 about one hour ago, based on on-chain tracking. According to Arkham Intelligence, the transaction and current holdings are visible at address 0x15f4c13E0cA461e0ef23F6d35Bbeb5dCE2495879 on its explorer. According to Arkham Intelligence, traders can track any subsequent large transfers or exchange deposits from this address in real time to gauge flow dynamics.