Mercado Bitcoin Hack: $48.6M Traced Across 11 Blockchains, Contradicting Exchange's Containment Claim

Decrypt · 2026-11-05
Mercado Bitcoin Hack: $48.6M Traced Across 11 Blockchains, Contradicting Exchange's Containment Claim

Blockchain forensic analysis contradicts Mercado Bitcoin's claim that it contained a security breach on Monday. Investigators traced $48.6 million in stolen funds moving across 11 different blockchains, including Ethereum, BNB Chain, and Tron. The movement occurred hours after the Brazilian exchange publicly stated the incident was under control. The analysis identified thousands of customer deposit addresses that were drained, suggesting the attack was broader than initially reported. This discrepancy raises serious concerns about the exchange's security protocols and transparency. Mercado Bitcoin, one of Latin America's largest cryptocurrency platforms, has not yet responded to the latest findings. The incident highlights the growing sophistication of crypto heists and the challenges exchanges face in securing user assets. With regulators already scrutinizing the industry, this event may accelerate calls for stricter oversight in Brazil's rapidly growing digital asset market. The full scope of the breach remains under investigation, but early evidence points to a coordinated, multi-chain operation that likely involved insider knowledge or advanced phishing techniques. Users are advised to monitor their accounts and enable additional security measures.