COINDESK · 2026-11-02 15:53 UTC

Brazil's Mercado Bitcoin halts withdrawals after $40 million drained across 10 chains

Mercado Bitcoin suspended deposits and withdrawals after wallets were drained across 10 blockchains, with losses estimated at over $40 million. The attacker obtained signing access to wallets holding approximately 2,852 ETH, 106 BTC, 10,700 SOL, and other tokens across multiple chains. Mercado Bitcoin stated no customer funds were harmed and no data was breached, with the exchange investigating and coordinating with authorities; Tether froze $4.5 million in USDT linked to the hack.

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