Ensure your image folders are set to "755" or "750" permissions, restricting access to authorized users only.
The "Parent Directory" link at the top of these lists allows a user to navigate upward through the server's folder hierarchy. If a server is misconfigured, a stranger can browse through your private folders as easily as they would browse files on their own desktop. Why "Updated" Results Matter parent directory index of private images updated
In CMS platforms like WordPress, certain gallery or backup plugins may create folders that bypass standard security protocols. The Risks of Exposed Directories Ensure your image folders are set to "755"