E-commerce is the practice of purchasing, selling, transferring, and exchanging goods, services, or information through the Internet, a computer, and/or other devices. With the development of e-commerce markets, fraud is increasingly reported. This study uses a crime script analysis to examine how customer-to-customer (C2C) fraud occurs on China’s online platforms with a particular focus on the online marketplace Baidu Tieba and Tencent QQ, a tool that allows customers to make contact and negotiate deals and payment methods. The findings demonstrate that C2C fraud develops through pre-operation, operation, finalization, and exit stages, sharing commonalities with other online identity fraud processes. Implications for policy and interventions are also discussed in regard to e-commerce fraud in China and elsewhere.