SynapLogic contract exposes a serious vulnerability. Hackers successfully stole approximately $186,000 through this flaw, once again sounding the alarm on contract security.

Where is the problem? This contract is mainly used to distribute the revenue share of the native token SYP, but it has a fatal flaw in its design — it does not verify whether the total allocated amount truly matches the actual transferred funds (msg.value).

How did the attacker exploit it? Very simple and crude. By specifying a particular recipient address, they caused the system to calculate an allocation of tokens far exceeding the actual payment amount. Then, by exploiting this discrepancy, they completed arbitrage after obtaining the newly minted SYP tokens — one in, one out, the hacker pocketed the money.

Although this type of vulnerability is fundamental, it poses a huge threat. A reminder to everyone: token distribution mechanisms must include proper value verification and upper/lower limit restrictions, or else you are opening a backdoor for hackers.