Recently, Golden Finance has paid attention to an important event where the staking contract on the Ethereum network suffered from a malicious attack through a peer-to-peer trading platform, otsaERC20. By exploiting the security flaws in the smart contract, an unknown address (0x000000003704BC4ffb86000046721f44Ef3DBABe) repeatedly illegally extracted the same staking ID, eventually stealing approximately $26,000 worth of assets. This incident highlights the importance of smart contract security in the cryptocurrency field, reminding developers and users to be particularly cautious when using blockchain applications.