How about u start banning coins who are proven to be washtrading on your exchange over and over again, prime example is now Blacer Coin which has the same devs as previous LPC, LGS and one other coins name I can't remember right now. Easy earnings if u just take rediculous listing fees from ICO's who come and washtrade their earnings and then dissapear to create the next scam. Same goes for your wallet update policy, hope you'll be held accountable for your actions.