Hackers don't manually click "Parent Directory" links anymore. They use automated tools like GoBuster , Dirb , or custom Python scripts that crawl every link and recursively download everything.
In your Nginx configuration file ( nginx.conf ), ensure the autoindex directive is set to off: autoindex off; The Culture of "Open Directories" index of parent directory
It acts as a breadcrumb trail. If you are deep in website.com/archive/2023/reports/january/ , clicking "Parent Directory" moves you back to .../reports/ , then to .../2023/ , and so on. This allows you to map the entire server’s exposed folder tree. then to .../2023/
Suppose you're browsing a website with the following URL: http://example.com/path/to/directory . The directory listing might show: index of parent directory