A recent 51% attack that impacted Ethereum Classic (ETC) is believed to have resulted in approximately $5.6 million worth of the cryptocurrency being double-spent.
A report published by Aleksey Studnev of blockchain forensics firm Bitquery on August 5 has revealed the extent of the incident, with Bitquery estimating that the attacker made off with 807,260 ETC.
The report estimates the hacker reaped more than a 2,800% return for his efforts, having spent roughly 17.5 Bitcoins (BTC) worth $192,000 on renting hash power from Nicehash to execute the attack.