COD Fraud Stop helps Shopify merchants detect and block fraudulent Cash on Delivery orders before they are fulfilled. Using advanced fuzzy matching technology, it scans every new order against your custom blacklist of known bad phone numbers, email addresses, and delivery addresses. Even when fraudsters change small details, the app catches them. Get real-time risk scores, automatic order tagging, one-click cancellation, analytics by city, and full control over your risk tolerance settings.