Well it is the responsibility of an investor to do adequate research on the topic before investing funds in any sort of schemes. There have been lots of incidents of this kind in the past and things won't change unless the people investing here take enough precautions not to fall for these sort of ponzis.
A saying goes "Never take up the deal if it is too good to be true." and being offered over 10% a month by means of mining and trading sounds way too good to be true.