In the past subfolders of my domain were hidden so anyone trying http://www.mysite.com/subdomain could not see the content of the folder.
Something has changed and now the subfolder content is visible.
How do I hide it ?
There are two "easy" ways to prevent the indexes of your subdirectories from being displayed should someone brose directly to them:
1) Use and .htaccess file in each directory (or in the "root" directory) to supress the display of the index.
2) place an index.html file in each sub-dir...when someone browses to that directory, the index.html file will be displayed instead of the index of files.