Mercado Bitcoin confirms cyberattack and halts all withdrawals

Mercado Bitcoin, Brazil's largest crypto exchange, confirmed a cyberattack and halted all customer withdrawals, describing the incident as quickly contained with no losses to clients. Blockchain analysts, however, are tracking outflows across more than ten networks, suggesting funds were moved despite the exchange's reassurances. The breach adds to a string of security incidents hitting centralized exchanges and puts a spotlight on the operational security of Latin America's biggest crypto platform. Mercado Bitcoin serves millions of Brazilian users, making the freeze a significant liquidity event for the local market. Watch for confirmation of the actual loss amounts, the scope of the exploit, and whether withdrawals resume on schedule.