The platform claims that only the Ethereum (ETH) and Binance Smart Chain (BSC) hot wallets were impacted, and notes that the two wallets were compromised using stolen private keys.

“In response to this incident, BitMart has completed initial security checks and identified affected assets. This security breach was mainly caused by a stolen private key that had two of our hot wallets compromised,” BitMart founder and CEO Sheldon Xia said.

According to BitMart, the attackers were able to steal $150 million in cryptocurrency from the two wallets. Blockchain security company PeckShield, on the other hand, estimates that the exchange in fact lost roughly $196 million.