Your questions meaning is misleading. 
Well, crypto currency trading itself is a big risk, and yes you heard it right. The fact is we dont know how the crypto trades might work up for us the we start with them. Now anyone who was trading in the January this year or lets say few months ago might be in the complete loss because the crypto as whole is down the line in terms of its market value. Thus, it has become hard for them to come out of it in the current dip. So you see that kind of investment can be risky and unwanted risks are always there in this market.