Hello EH Community,  we are really new on this but recently we've been stolen a significant amount by an very organized people that screens as a big corporation on the internet.
We would like to trace this people in order to make them stop their fraudulent activities and screw up more people.  We really don't know much about hacking or internet forensics/investigation procedures,  and we think this is a great place to start asking what could we do and the right tools to use in our in-deep investigation.

From our little basic research we got the following:
- The page is hosted at Yahoo
- Domain registered at Melbourneit.com
- Apparently they are sending mass emails from Panama (looking at the email's header)
- They have a Landline number (From Neutral Tandem) in Florida. USA.
- False address registered at their website.

We have much more information but we don't want to make the domain public yet in order to not alert them and let them go.

Please,  any information would be REALLY appreciated,  and we are willing to give a small reward of $100,  maybe not much, but that's what we can so far.