Binance Good Chain paused on Thursday evening immediately after detecting a “potential exploit.”
Binance CEO Changpeng “CZ” Zhao later confirmed the concern on Twitter, indicating, “An exploit on a cross-chain bridge, BSC Token Hub, resulted in added BNB.” The BSC Token Hub impacted is the cross-chain bridge involving the BNB Beacon Chain and the BNB Chain, he included.
“The challenge is contained now,” CZ wrote. “Your resources are risk-free.”
“This is an isolated issue on BSC,” a Binance consultant told Fortune. The BSC Hub and BNB Chain groups did not quickly reply to requests for comment.
CZ also pointed to a Reddit post with much more facts of the exploit, which observed an first estimate of cash stolen ranging from $100 million to $110 million, adding that an estimated $7 million had been frozen.
Cross-chain bridge hacks are incredibly prevalent. Case in stage: About $2 billion in cryptocurrency has been stolen in cross-chain bridge hacks just this year.
Quite a few on crypto Twitter also pointed this out: “Bridges are the weak point.”
CZ mentioned on Twitter that there isn’t a rush to resume. “Let’s give the devs time to totally fully grasp the root trigger, put into practice the fixes, take a look at them comprehensively, and then resume,” he wrote. “Let’s not rush it now.”