Nowadays people are changed more and learnt how to choose the best ICO. Now these scammers are getting involved with the small exchanges and list the scam project in the form IEO.
Then these users get scammed in IEO. ICO is not scamming more than IEO.
This can be enumerated endlessly, since scammers everywhere, in all fields of activity and cryptocurrency, are no exception, since this industry has gained great popularity. Therefore, we always need to be alert, because we always risk losing our money.