There has been a huge influx of passport available for sale on the Dark Web.
Also have seen posts where people are being accused of double entry into ICO's because the scammers used their passport information prior to them getting signed up.
Thats dangerous because our ID might be used in some illegal activities and we wont know what will happen to use,the best thing to do is not to join any of these ICOs because we can still have these tokens after these projects has been listed to exchanges,in that way our privacy wont be compromised,not all the people are willing to risk their privacy.