Not a new thing, but it will always be comparable to the addition of crypto enthusiasts, not only in ICO also on websites that prepare investments with the promise of more profits. It will happen sooner or later, but if you have time for wd before, then you are lucky
This scammers are generally all those who starts a new ICO. Majority of them is considered to be a scam sort because they will get the funding form the investors but their coin will either not get listed or will fall drastically in some time only on listing and they will sell their position and get exit.
All they want is the money and in majority cases, they are able to hack and cash out the millions but this is the case with only those technologies with low security. As for as Bitcoin or ETH is concerned, the Blockchain is greatly secured against any such attack and this is the reason why people still trust these technologies. Moreover, they constantly grow in size adding additional security and advancement in the system makes it more impossible for the cyber agents to hack it.