At first, the enrollment process should be properly tracked with analytics so that if a case of fraud is reported on a transaction, a post mortem analysis can reveal fraud markers. Then, discovering these markers may help the e-commerce service take preventive measures, such as those listed in the table below.
Control the signup process to limit fraud risk
|1||Prohibit some product categories.|
|2||Refuse some types of buyers (and sellers if this is a marketplace).|
|3||Closely monitor transactions known to bear a high risk.|