According to SlowMist monitoring, on December 1st, the decentralized financial protocol yearn was hacked, causing about $9 million in losses. The SlowMist security team analyzed the incident and confirmed the root cause as follows: The vulnerability stems from the logic of the _calc_supply function used to calculate the supply in the Yearn yETH Weighted Stableswap Pool contract. Due to an insecure mathematical operation, the function...