# Security Considerations

* **Test thoroughly**: Always test anonymization rules with representative data
* **Regular updates**: Review and update patterns as your application evolves
* **Compliance**: Ensure your anonymization approach meets regulatory requirements
* **Backup strategy**: Consider how to handle cases where anonymization fails
* **Access control**: Limit access to original data and anonymization rules

<Warning>
  Remember that anonymization is a one-way process — once data is anonymized in Opik, the original values cannot be recovered. Plan your anonymization strategy accordingly.
</Warning>