Brazil’s largest crypto exchange Mercado Bitcoin freezes deposits and withdrawals after security incident

Brazil's largest crypto exchange confirmed a security incident as Hypernative flagged multi-chain outflows from linked wallets Mercado Bitcoin has temporarily suspended deposits and withdrawals after detecting a security incident in one of its systems, the top Brazilian exchange disclosed Monday. The company said it swiftly contained the issue and that the incident had caused no customer losses or data breach. Its teams are investigating the case, tracking the assets and working with the relevant authorities. Founded in São Paulo in 2013, Mercado Bitcoin has grown into one of Brazil’s largest digital asset platforms, with more than 4.8 million clients.