BlockSec: Arbitrum on-chain FutureSwapX contract hacked, resulting in nearly $400,000 loss.

PANews reported on January 10th that, according to BlockSec monitoring, a suspicious transaction occurred in the Arbitrum on-chain FutureSwapX contract, with an estimated loss of approximately $395,000. BlockSec stated that it has attempted to contact the team but has not yet received a response. The attacker appears to have stolen funds through multiple changePosition operations, ultimately withdrawing USDC. Since the contract is not open source, the exact root cause still requires further investigation. Based on on-chain behavior, it is suspected that the incident may be related to unexpected changes in the stable balance during early position updates, which resulted in the release of USDC during position reductions or liquidations.