On November 2, Brazilian exchange Mercado Bitcoin suffered a security incident. On-chain analysis shows that 36,042 Ethereum customer deposit addresses were emptied that day, involving approximately $266,000.
The attack lasted nearly four hours. Even after Mercado Bitcoin publicly claimed it had contained the incident, the activity continued. Bitquery’s tracking found that approximately $48.6 million in assets were stolen across 11 blockchains in the incident.
According to Mercado Bitcoin’s latest assessment, the incident involved approximately $36.3 million in affected assets.
From a technical perspective, Bitquery noted that all the transfers were authorized directly by deposit addresses, suggesting that the attackers had obtained some private keys or were able to sign transactions on behalf of the addresses.
$BTC #On-chain
The attack lasted nearly four hours. Even after Mercado Bitcoin publicly claimed it had contained the incident, the activity continued. Bitquery’s tracking found that approximately $48.6 million in assets were stolen across 11 blockchains in the incident.
According to Mercado Bitcoin’s latest assessment, the incident involved approximately $36.3 million in affected assets.
From a technical perspective, Bitquery noted that all the transfers were authorized directly by deposit addresses, suggesting that the attackers had obtained some private keys or were able to sign transactions on behalf of the addresses.
$BTC #On-chain
