As online business people, of course we will encounter a lot of e-commerce fraud such as Account Takeover (ATO), Refund Fraud, Chargeback Fraud, Card Testing Fraud, etc. There are also many fraudulent buyers who use stolen credit cards or those belonging to other people, then they use them to buy products in your online shop. In general, online shop owners are late in identifying ecommerce fraud attacks, or they only find out after receiving complaints from genuine customers. So how do you prevent ecommerce fraud?