"do anyone prosecute this kind of hacks? or just because is a token without legal status is like stealing Sheldon's gear in WOW."

Actually, I do lean towards the notion that stealing/embezzling/defrauding iotas/bitcoins/cuervocoins is legally equivalent to looting gold in WoW.

I see nothing in this news/thread today about "Iota" (which I have never heard of until today) that makes me consider it serious, legal business.

It approaches the seriousness of WoW from below.