Research Article
A Detection Method for Abnormal Transactions in E-Commerce Based on Extended Data Flow Conformance Checking
| | Transition | Meanings | Input data | Output data | Delete data | |
| | T0 | Log in | V0 | V1 | None | None | | Check for completeness | | None | None | None | | More info | None | | None | None | | Completeness checking pass | None | None | None | None | | User operation | None | | None | None | | Operation detection | | | None | Recursive correlation | | Warning | | None | None | None | | Submit orders | | | None | None | | Order addressed | | | None | None | | Order accepted | | | None | None | | Invalid orders | | None | None | None | | Order canceled | | None | None | None | | TN created by CS | None | | None | None | | TN accepted by seller | | | None | None | | Request payment and enter password | | | None | None | | Password correct | | | None | None | | Password wrong | | None | None | None | | Re-enter the password | None | | None | None | | Password error exceeds limit | None | None | | None | | Payment | None | | None | None | | Notify TP payment done | None | | None | None | | Notify buyer payment done | | None | None | None | | Notify seller payment done | | None | None | None | | Buyer click to view and update order status | | | None | None | | Check and process payment orders | | | None | None | | Check and process orders amount | | None | None | None | | Check and process orders goods | | None | None | None | | Check and process orders address | | None | None | None | | Detect user static attribute | | None | | Full sequence comparison | | Success purchase | None | None | None | None | | Existing extra unpaid orders | None | None | None | None | | Orders all paid | None | None | None | None | | Abnormal transaction | None | None | None | None | | Normal transaction | None | None | None | None |
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