How to identify 419 people

How will i dentify 419 people especiall those that using sum occulties name to decieve a poor previlage in the society collect the little they have gather &render the person useless by telling them that they will make him/her richer at the end no work is done.lets every body in there suggest to me if possible u tell me with my email addres (DAVID4EZE@GMAIL.COM