Overview
- Mercado Bitcoin detected and contained a security incident and as a precaution suspended deposits and withdrawals on Monday, November 2, 2026.
- The exchange said customers suffered no losses and no data breach occurred while its security teams investigate and track assets alongside law enforcement.
- Mercado Bitcoin has not identified which internal system was affected, has not said whether any assets were taken, and gave no timeline for resuming the suspended services.
- Tether reported freezing more than 4.5 million USDT linked to the incident and Mercado Bitcoin published destination addresses on Bitcoin, EVM chains, Solana, Stellar and Tron to help trace transfers.
- The episode follows a string of recent crypto breaches, including the October 29 Binance hack, and sharpens questions about exchange security, public disclosure and how quickly customers will learn if funds can be recovered.