Mercado Bitcoin Halts Deposits and Withdrawals After Security Incident

By Isaac • November 2, 2026 3:07 pm •

Mercado Bitcoin temporarily halted deposits and withdrawals after the Brazilian crypto exchange identified and contained a security incident in one of its systems.

The exchange said customers did not suffer losses and that no personal data was exposed. Outside blockchain analysts, however, flagged tens of millions of dollars in suspicious transfers across multiple networks, leaving an important gap between what has been observed on-chain and what the company has formally confirmed.

What Mercado Bitcoin has confirmed

Mercado Bitcoin said the incident was detected during the early hours of November 2 and quickly contained. Deposits and withdrawals were paused as a protective measure while the company investigated, traced moved assets, and coordinated with authorities and industry partners.