maybe it can, it has been seen that for some time the ETH has always risen and stabilized.

there are some tips for choosing a good ICO:
1 do not be easily tempted by ICO free.
2. see the roadmap and the whitepaper.
3. look for reviews in various forums, this forum can also.
4. find out about the owner. seen from the history of the owner during the crypto world.
that's a tip from me.

The name hackers can come at any time, if there is an opportunity then they act, safe and secure is not dependent on a strong database, if very very likely to be hacked.

instead of a scam, maybe the ICO failed to reach the expected target, so the bounty was not paid.

I chose ethereum, because right now I feel ethereum is still stable compared to bitcoin 

sampai sekarang ini memang paling di atas adalah bitcoin, bitcoin harga jualnya sangat tinggi, ya kalau seperti ethereumdan bch belum bisa menyaingi bitvoin saat ini, tapi lihat kedepan nya dulu gan mungkin nilai bit coin bisa saja turun