A post by @WuBlockchain on X.

Brazil's largest cryptocurrency exchange, Mercado Bitcoin, confirmed a cyberattack on November 2, with blockchain security firm Hypernative estimating over $40 million in suspected losses across at least 10 blockchains, including Bitcoin, Ethereum, Solana, and Tron. The exchange said the incident was quickly contained, that customers would not incur losses, and that no customer data was leaked, though deposits and withdrawals have been temporarily suspended as a precaution. Hypernative's figures have not been confirmed by the exchange, and the attack method remains unknown. The breach is significant given Mercado Bitcoin's status as Brazil's largest crypto exchange, and the suspension of deposits and withdrawals could affect liquidity for Brazilian users. Watch for confirmation of the final loss figure, disclosure of the attack vector, and the resumption of deposits and withdrawals.