On November 25th, Kyber Network posted on social media that on November 22nd, hackers attacked the KyberSwap Elastic smart contract through a series of complex operations, extracting user funds to the attacker's wallet, and approximately 54.7 million US dollars of user funds were stolen. In response, Kyber has suspended deposits, launched an investigation, contacted relevant parties, and negotiated with the attacker to help users recover funds as much as possible, including offering a 10% reward to the hacker. This hack is one of the most complex attacks in DeFi history, as the attacker needed to perform a series of precise on-chain operations to exploit the vulnerability.