so far Crypto market  has been very profitable source of income for scammers without been caught for example,in 2015 and 2016 we saw many ravenue share sites such as(TAT) The Ads Team,My 24 hour income and(MPA) and (MPCA) My Paying Ads  appeared and their owners scammed   million of dollars and they disappeared  without being arrested and in 2017 and 2018 new fake ico"s came again they made people fool .at least there should be a law to return the people money . it is not impossible to arrest these criminals ,all these scammers have social media profile they can be punished easily.