we should be careful when buying in ICO because the current ICO situation is not good, nowadays there are so many ICO scams and us, it's hard to distinguish them from the really serious ones.
but more safer if people participated in IEO than ICO diect from developer of the project, like Huobi in 2 month they are launching 2 ico campaign and before participated investor must hold Huobi -/+ 1 month before IEO started, and 2 campaign handled by huobi are successfull