A fraud detection system helps companies to decrease unidentified transactions and increase company revenue and brand value. Many different forms of fraud exists in E-commerce businesses such as Interception Fraud, Chargeback Fraud, Payment Fraud, Promotion Abuse or Sign-up Fraud.We can detect suspicious behavior by using data science techniques like matching algorithms, anomalies detection, classification and data mining. Signs of suspicious behavior could include a shipping address differing from a billing address, an unexpected international order or multiple orders of the same item.