Crypto exchanges call for quick moves to bolster defences after Binance heist

In such attacks, hackers race to launder the funds before the exchange detects the breach and token issuers freeze ​assets. Stablecoin issuer Tether said it had frozen nearly $1.57 billion linked to Binance, while Circle said it froze $800 million. Bitcoin ​and Ether cannot be ⁠frozen because no single entity controls the coins.