Brazil's Largest Exchange Mercado Bitcoin Halts Withdrawals After $40 Million Hack
Summary
Mercado Bitcoin, Brazil’s largest crypto exchange, suspended deposits and withdrawals after detecting and containing a security incident. It said customers suffered no losses and no data was leaked, but has not explained how attackers gained access or announced when services will resume. Security firm Hypernative identified more than $40 million in suspicious transfers across at least 10 blockchains; the exchange has not confirmed that estimate. Tether said it froze over 4.5 million USDT linked to the incident. Mercado Bitcoin published addresses for tracking funds and said it would provide updates. It has not identified those responsible or connected the incident to a separate recent Binance theft.
