BitMart Founder Confirms Minor Hack, Suspects Link to $49…
By Karthik Subramanian

AI summary of the source article
BitMart founder Sheldon Xia confirmed a security breach involving a relatively small amount of funds on November 4, 2026. The incident may be connected to a recent attack on Brazilian exchange Mercado Bitcoin that cost up to $49 million.
Why it matters
For cryptocurrency exchanges, the events underscore the importance of safeguarding operational credentials, monitoring suspicious withdrawals and coordinating quickly with blockchain investigators.
Key facts
- BitMart founder Sheldon Xia confirmed a security breach on November 4, 2026, while the exchange undergoes restructuring and liquidation proceedings.
- Blockchain investigators estimate the November 2 Mercado Bitcoin attack involved between $46 million and $49 million in stolen cryptocurrency.
- Suspicious outflows linked to BitMart wallets were estimated between $298,000 and $391,000, with funds reaching an address later tied to the Mercado Bitcoin exploit.
Source excerpt · FinanceFeeds
Cryptocurrency exchange BitMart has suffered a security breach involving a relatively small amount of funds, with founder Sheldon Xia suggesting the incident may be connected to the recent attack on Brazilian exchange Mercado Bitcoin. Xia confirmed the breach on November 4, 2026, saying the company had launched an investigation and strengthened its security measures. The announcement follows the N…