Hacking News
Mercado Bitcoin Hack Traced Across 11 Blockchains
Mercado Bitcoin, a Brazilian cryptocurrency exchange, announced on November 2 that it had contained a security breach. However, new blockchain analysis by Bitquery traces more than $48 million in stolen assets across 11 blockchains, challenging the exchange's claim. The analysis shows that 36,042 Ethereum customer deposit addresses were drained between 9:27 a.m. and 1:56 p.m. Brazil time, with funds totaling approximately $266,000. The researchers suggest the attacker had access to the deposit addresses' private keys or a system capable of signing transactions on their behalf.