Too simple, everyone will recognize if the project does so. Now the project looks very real, but its true nature is scam. They still develop their project until the end of the ICO for several months, then gradually they will abandon it. That is how very smart scam of the ICO
That's true, it's very difficult to know whether the ICO is a scam or not now. Sometimes the project looks so good, so potential, so real, but it turns out that the project is scam. We need to be very careful, we should know all the information about the project well before deciding to join that.