> For the complete documentation index, see [llms.txt](https://developer.paywall.one/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://developer.paywall.one/payment-orchestration-integration-document/fraud-service.md).

# Fraud Service

- [Blacklist](https://developer.paywall.one/payment-orchestration-integration-document/fraud-service/blacklist.md): You can manage the blacklist within the fraud process through these services.
- [1. Check](https://developer.paywall.one/payment-orchestration-integration-document/fraud-service/blacklist/1.-check.md): This service allows you to check whether a piece of information is on the blacklist. With this service, you can control your internal processes such as before payment initiation or before user registr
- [2. Add](https://developer.paywall.one/payment-orchestration-integration-document/fraud-service/blacklist/2.-add.md): Used to add information to the blacklist.
- [3. Update](https://developer.paywall.one/payment-orchestration-integration-document/fraud-service/blacklist/3.-update.md): Used to update information in the blacklist.
- [4. Delete](https://developer.paywall.one/payment-orchestration-integration-document/fraud-service/blacklist/4.-delete.md): Bir bilginin kara listede silinmesi için kullanılmalıdır