Mercado Bitcoin Reports $46M Wallet Theft
Brazilian crypto exchange Mercado Bitcoin reported that attackers transferred more than $46 million from its wallets. The exchange paused deposits and withdrawals, but funds continued moving from addresses linked to the incident for hours afterward. CertiK said the activity crossed eight smaller networks, including Base, Optimism and Arbitrum, and involved thousands of small ETH transfers. Security firms said the theft used ordinary transactions rather than a smart-contract exploit. Tether and Circle froze about $6.2 million by 16:42 UTC. Around $20 million was sent to newly created wallets, while more than $20 million—including 106 BTC—remained in addresses identified by Mercado Bitcoin. The exchange said customers suffered no losses and no data was exposed. The investigation is ongoing, with no group identified. The incident puts a spotlight on exchange wallet security and operational controls, but no direct impact on BTC or ETH prices was reported.
Neutral
The incident concerns Mercado Bitcoin’s wallet security and does not indicate a vulnerability in Bitcoin or Ethereum themselves. The reported transfers and partial freezing of funds may prompt short-term caution among traders, but neither summary reports a direct price reaction in BTC or ETH. Historically, exchange breaches can create temporary uncertainty and risk-off sentiment, while broader market effects depend on the scale of losses, customer exposure and signs of contagion. Mercado Bitcoin said customers were not affected, and the investigation has not identified a group, which limits evidence of a broader threat to the assets. Longer term, the event may renew scrutiny of exchange custody and operational controls, but any sustained impact on BTC or ETH would likely require further developments, such as confirmed customer losses, wider asset exposure or significant forced selling.