Blockchain security firm BlockSec has reported that the FutureSwap protocol on Arbitrum suffered a reentrancy attack, resulting in a loss of approximately $74,000. The attack occurred four days ago, with hackers exploiting the reentrancy function 0x5308fcb1 to over-mint LP tokens. After a three-day cooldown period, the attackers redeemed the over-collateralized assets to secure their profits.