Technology deployed in the mobile telecoms industry in recent years has been designed to protect networks and customers from fraud risk. The truth is that fraud has not been defeated by technology, quite the reverse. Those measures specifically designed to thwart criminals have often been used to perpetrate fraud. The reason for this is a lack of understanding of the nature of fraud and those who commit it. Internal fraud is the greatest risk that any commercial enterprise faces and those based upon technology are the most vulnerable of all. This talk will examine some of the types of internal fraud which are commonly experienced and attempt to explain them using some brief examples from the speaker's own experience as well as suggesting ways in which some of the wrongs may be righted.