Blockstream pauses Liquid Network after attackers claiming to be whitehats take 4,000 BTC (~$320 million)

Blockstream has halted its Liquid Network following an unauthorized withdrawal of nearly 4,000 BTC by attackers posing as whitehat hackers. These attackers threaten to cash out constrained by the disabling of bridge nodes to the Bitcoin mainchain. Blockstream is in touch with exchanges to pause transactions to mitigate further loss while exploring the nature of the withdrawal, which could be an attempt by security researchers to exploit vulnerabilities safely.