BlockSec monitoring data shows that the SynapLogic contract recently suffered a hacker attack, resulting in approximately $186,000 in funds lost.

The main function of this contract is to proportionally distribute the native token SYP's revenue share to users. The root cause of the issue lies in a serious parameter validation flaw in the code— the system did not perform effective validation of the total distribution amount when allocating tokens, failing to ensure that the distribution amount did not exceed the actual amount paid to the contract (msg.value).

The attacker exploited this vulnerability by carefully constructing specific recipient address configurations. Through this method, they caused the contract to distribute native tokens far exceeding the actual received amount, achieving a fund siphoning. During the entire process, the attacker realized profit by cashing out the newly minted SYP tokens.

This incident serves as a reminder to developers that in contract design involving token distribution and value transfer, parameter validation and boundary checks must be rigorous. Any logical loophole could become an attacker's entry point.