A Study on a Practical Measure against Billing Frauds

Recently, the damage of billing fraud has been increasing, in which a fraudster asks a victim by telephone to pay money into the fraudster's bank account. So far, although several measures against billing fraud have been proposed, their usability and detection accuracies are still insufficient. Moreover, most of the measures will only work during conversation between the victim and the fraudster. Once conversation starts, the fraudster can cheat the victim with cajoling words. Therefore the measure against billing fraud should have the capability to detect and block the hone call from the fraudster automatically, or a function which allows victims to confirm the authenticity of the caller before the conversation starts. In this paper we study a measure to resolve these problems in a practical manner.