StackLens may retain uploaded CSV and Excel files, derived normalized rows, and masked analytical outputs to operate the service, support later analysis, improve matching and modeling quality, investigate issues, and maintain auditability.
Where feasible, analytical workflows may use masked values or reduced data views, but the original uploaded file can still be retained in secure storage for authorized internal review and future processing.
You should only upload files that you are authorized to share with StackLens and that are covered by your organization’s data handling and privacy requirements.