Buy bitcoin, that's the safest and most secured coin you can invest right now. Make it a habit also to read and research about the coins you want to invest in, of course people would want to ask opinion on others but at the end of the day it is still you who decides which coin to invest in, right?
Such a threat exists on its own, especially considering that about 40% of the bitcoins belong to only a thousand people. But if you look wider, the bitcoin turns are just beginning, soon the deficit will begin and the cost will be a record