Let ICO holders automatically send coins to your Ethereum wallet just after receiving your Ethereum
Just like, betrium.co is doing.
KYC is really useless for crypto currency traders.
The easiest way to stop ICO scam,is first not to invest that kind of hoax project platform,second is to inform all part of your community,or some of your friends who belong in this cryptocurrency bussiness,that you feel something fishy of that ICO project now come out in the market,third is research that kind of project if its legit from the white paper,the staff,road map that all of there presentation is genuine,so otherwise you can find a good ICO if that project is marketable and the community manager is good communicator,so thats why to stop this scam ICO is to filter it and to determine its been a ponzi or legit project.
We cannot really know which ico project can turn to scam since most of them is a promissing one but you have a point in that scenario the best way we can do to stop that kind of project is not to invest meaning we need to check carefully the project detail the team behind them, but in the end its so hard to know the hoax project so everyone must be careful.