DECRYPT · 2026-11-02 16:46 UTC

Brazil's Largest Exchange Mercado Bitcoin Halts Withdrawals After $40 Million Hack

Mercado Bitcoin, Brazil's largest crypto exchange, suspended deposits and withdrawals after identifying a security incident early Monday morning. Blockchain security firm Hypernative flagged over $40 million in suspicious transfers across at least 10 blockchains; Tether froze 4.5 million USDT connected to the incident. The exchange claims no customer funds were lost and no data leaked, but has not disclosed how attackers gained access or confirmed the $40 million figure.

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