Select what genuinely interests you. Your picks feed directly into our editorial planning. Mercado Bitcoin, by its own account and according to the trade press Brazil's largest crypto exchange, confirmed a cyberattack on one of its systems on Monday, November 2, 2026, and suspended all deposits and withdrawals for the time being. According to reporting by Cointelegraph, crypto assets worth more than $46 million flowed out of the exchange's wallets. The exchange itself says its customers have suffered no harm. Anyone holding a balance at Mercado Bitcoin still cannot get at their money for now.