Last week, an unknown malicious miner successfully released so-called 51% attack on Bitcoin Gold.
According to the news reports, the spokesperson of the network warned about a double-spent threat back on May 18, adding that the hacking software uses vulnerability for digital assets heist.
Technically, the miner captures at least 51% of the network hash rate and gets short-term control over the blockchain. It is said that such activities require considerable expenses, but the hackers can monetize funds via responding to transactions. While controlling the network the software started depositing BTG coins to trading platforms and sending these coins to the specific wallet simultaneously. The network would obviously reject the second transaction, though the hacker managed to include required transactions into the final version of the blockchain.
This means that attacker deposited coins and withdraw them promptly, canceling the original transaction. As a result, cryptos could be generated on a separate address.
According to the available data, the hacker's BTG address received more than 388,000 coins, which means some $18 million in fiat terms.