What are some of the best places you can think to hold ICOs, that provide both the investor and the project manager security from fraud, scams so on and so forth?
ICOs? ICOs are dead.

Or you mean IEO? 'cause if you mean IEO then the best place to do that would be on Binance.
Why? It is the most popular cryptocurrency exchange, good trading volume, and any shill post of a project connected to Binance will surely get more attention to it.
But, getting listed on that exchange is very, very difficult to achieve. The project needs to very good for them to even consider listing it.
So if you have plans on doing that, good luck.

Binance is not guarantee best place for saving and investing with IEO coin, look how many IEO have lower price listed with Binance exchange, better keep away from investing with ICO and IEO better take holding with top ten altcoin in coin market cap, what for waste much money and time with shit coin of IEO. Moment for ICO and IEO have ended more than six months ago and now era for investing only with altcoin ready on exchange market.