Mercado Bitcoin Halts Withdrawals After Security Incident As Hyperactive Flags Mark $40 Million Withdrawals Mercado Bitcoin has suspended deposits and withdrawals after more than $40 million was transferred from its wallet in a security incident, which the exchange says did not result in lost customers or data leaks. The suspicious transfers occurred across at least 10 blockchains, with the largest transactions occurring within a short time frame, and the source of the unauthorized transaction signature remains unclear. This incident follows a major breach at Binance, where $6.3 billion was stolen, prompting both exchanges to halt withdrawals and reevaluate their security measures.