The check is in the mail: Monetization of Craigslist buyer scams

Nigerian or advance fee fraud scams continue to gain prevelance within the world of online classified advertisements. As law enforcement, user training, and website technologies improve to thwart known techniques, scammers continue to evolve their methods of targeting victims and monetizing their scam methods. As our understanding of the underground scammer community and their methods grows, we gain a greater insight about the critical points of disruption to interrupt the scammers ability to succeed. In this paper we extend on previous works about fake payment scams targeting Craigslist. To grow our understanding of scammer methods and how they monetize these scams, we utilize a data collection system posting “honeypot advertisements” on Craigslist offering products for sale and interact with scammers gathering information on their payment methods. We then conduct an analysis of 75 days worth of data to better understand the scammer´s patterns, supporting agents, geolocations, and methods used to perpetuate fraudulent payments. Our analysis shows that 5 groups are responsible for over 50% of the scam payments received. These groups operate primarily out of Nigeria, but use the services of agents within the United States to facilitate the sending and receiving of payments and shipping of products to addresses both in Nigeria and the United States. This small number of scammer organizations combined with the necessity of support agents within the United States indicate areas for potential targeting and disruption of the key scammer groups.