%{{tag.tag}} {{articledata.title}} {{moment(articledata.cdate)}} @{{articledata.company.replace(" ","")}} comment Mercado Bitcoin, Brazil's largest cryptocurrency exchange, says it has been hit by a security incident that cost it $46.3 million U.S. in lost assets. On social media, Mercado Bitcoin said: "We identified and swiftly contained a security incident in one of our systems early this morning." The exchange said the incident did not affect customers or result in a data breach. The company also published the digital wallet addresses where the stolen crypto is headed to help security firms track the digital assets. Mercado Bitcoin's hack comes days after a record $6.3 billion U.S. theft at cryptocurrency exchange Binance. In recent days, prediction market Polymarket reported that it was hit by a $2.65 million U.S. hack, in which it said a third-party provider was compromised. And blockchain analytics firm Chainalysis said its customer data was accessed by a hacker. The number of recent thefts from blockchain-based platforms has shaken investor confidence in cryptocurrencies and the companies behind them. Since the hack at Binance, customers have withdrawn nearly $11 billion U.S. of crypto and cash from the trading platform. The spate of security breaches has also pushed crypto prices lower, with Bitcoin (CRYPTO: $BTC ) trading at $77,000 U.S. on Nov. 3, down from more than $80,000 U.S. a week ago. Mercado Bitcoin is privately held and its stock does not trade on a public exchange.