Brazilian cryptocurrency exchange Mercado Bitcoin has suspended withdrawals after a multichain security breach that resulted in roughly $40 million in losses, according to a November 3, 2026 report. Investigators say they have traced approximately 6.7 million XLM to an attacker-controlled wallet, while the Stellar network itself remained unaffected by the exchange wallet compromise.
The breach highlights ongoing risks at centralized trading platforms, even as blockchain networks continue to operate normally. The incident involved assets across multiple chains, but the traced XLM portion has drawn particular attention from on-chain analysts.
Mercado Bitcoin has not yet disclosed a full timeline for restoring withdrawals or detailed recovery plans. The exchange said it is working with investigators to track the remaining stolen funds.
