Do you think, it's possible?
Team members were not exposed to anywhere, attended none of the Blockchain Expo's, conferences etc. You can verify the ICO's in various method, one of them is to see their KYC report. See here, their KYC report was failed. https://icobench.com/ico/crestonium.
Its duly a mistake of our-self and lesson to us. we need to avoid these kind of ICO's in the future.