Hypertext Access file General Security and Hack Prevention Disable directory index
Example
Enabled directory index means that if someone access to any folder which don't contains index.php , index.html, index.htm or any other default file defined in DirectoryIndex in apache configuration then all files in that folder will be listed in browser if you try to visit that page.
Often directory index is enabled by default on your apache server, in these cases good security practice is to disable directory index with following line:
Options -Indexes
