Imgur will delete images not associated with any account 6 month after the last access. This means that if you use imgur as your image backend, you may lose images uploaded by you or your users.
See this [FAQ entry](https://help.imgur.com/hc/en-us/articles/14415587638029-Imgur-Terms-of-Service-Update-April-19-2023-)
All uploads are saved in the `media_uploads` database table and contain the deletion token ([see here](https://apidocs.imgur.com/#949d6cb0-5e55-45f7-8853-8c44a108399c)) in the column `backendData`.