strongest coins are safe they are not a scam, so decred dash and ethereum are safe, i don't trust dash but whatever, you have also zcash and komodo, boolberry that look legit with dev taht is active, ico are without any doubt a scam stay away from lisk andiconomi, litecoin instead is very dead, but not a scam, the other are trast not much interest, ah and lol ripple is sure at 100% a scam