According to Golden Finance, BlockSec Phalcon monitoring shows that Web3 launcher platform WebKeyDao was hacked, causing about $73,000 in losses. The attacker uses an unprotected function to buy wkeyDao tokens at a low price and sells them on a decentralized exchange to make a profit. Specifically, the attacker used the buy function in the vulnerable contract to buy 230 wkeyDao tokens using 1159 BUSD, and then sold the tokens on DEX for about 13,167 BUSD, earning about 10 times the profit.