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Fraud detection at eBay

Author

Listed:
  • Rao, Susie Xi
  • Han, Zhichao
  • Yin, Hang
  • Jiang, Jiawei
  • Zhang, Zitao
  • Zhao, Yang
  • Shan, Yinan

Abstract

Fraud detection is a key research topic for e-commerce, addressing challenges like dynamic heterogeneity and interlinked fraudulent patterns. Existing efforts include rule-based and machine learning systems, but graph-based approaches are increasingly critical. This paper presents the first systematic review of fraud detection in real-world e-commerce environment like eBay, leveraging multi-source data such as transaction logs and user behavior, dealing with challenges of information heterogeneity, scalability, graph dynamics, explainability, and adaptability. We also highlight eBay's efforts in designing explainable fraud detection systems with graph neural networks (GNNs) tailored to deployment needs and offer insights and recommendations for advancing research.

Suggested Citation

  • Rao, Susie Xi & Han, Zhichao & Yin, Hang & Jiang, Jiawei & Zhang, Zitao & Zhao, Yang & Shan, Yinan, 2025. "Fraud detection at eBay," Emerging Markets Review, Elsevier, vol. 66(C).
    • Handle: RePEc:eee:ememar:v:66:y:2025:i:c:s1566014125000263
    DOI: 10.1016/j.ememar.2025.101277
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