Brazil's Largest Exchange Mercado Bitcoin: Security incident

Brazil's largest crypto exchange paused deposits and withdrawals after a security incident. Tether froze more than 4.5 million USDT tied to the attack.

Evidence boundary

Confidence describes the coverage of the available evidence. It is not a safety rating and does not guarantee that a protocol or asset is safe.

Sources

• https://decrypt.co/382341/mercado-bitcoin-halts-withdrawals-40-million-hack
• https://www.coindesk.com/business/2026/11/02/brazil-s-mercado-bitcoin-halts-withdrawals-after-usd40-million-drained-across-10-chains

Record history

First seen: 2026-11-02T15:53:29.000Z. Last updated: 2026-11-04T16:11:36.734Z. Revision: 5.