According to Internet reports, according to Decurity's post-event report, after negotiating with the hackers, most of the US$5 million in funds stolen by the attack had been returned, and the hackers kept part of it as a loophole bounty. The attack originated from a vulnerability in the Fusion v1 smart contract. The main affected were the use of outdated versions of the parser, and the funds of ordinary users were not affected. According to Odaily's previous report, 1inch discovered a vulnerability in the Fusion v1 smart contract on March 5, which hackers used to steal funds. 1inch has called on relevant parsers to immediately conduct audits and update contracts to prevent similar incidents from happening again.