An anonymous person revealed that he made $250k after exploiting a bug from an investment site Soft Yearn (SYFI) which is kindof a like Yearn.finance clone. User said he only had an investment of 0.5 ETH but ultimately ended with 740 Eth. He was just observing the prices at Uniswap when SYFI token skyrocketed to 15.5k that was when he quickly sold the tokens. Though the rise was later announced was due to a bug in the protocol