~snip~
Project Team.
Team development is important investigate everyone on team list, most scammers uses fake pictures
Whitepaper
I check if whitepaper is plagiarized or not. Scammers simply copy from various whitepaper and use this in their whitepaper. You can do it with various free resource of plagiarism
I am sure this kind of problem will not be able to do a large exchange IEO like you mentioned. I am sure, if the project is fake with a team that is not real, whitepaper copy. Surely they will carry out IEO in exchange of not well known or low. Because they are aware, they cannot enter into large exchanges.