The FBI set up the Virtual Assets Unit last year in order to respond to the growing number of crimes using virtual currencies.
It invites people who have been victims of scams to make a complaint on the FBI's dedicated page.
But law enforcement agencies maintain the best way to fight scammers remains prevention.
"Knowledge - and doing some due diligence before the investment - it's critical," says Mr Wyman.
"It's like everything else: if it sounds too good to be true, it often is."