Joomla wants 777 permission on many files and folders which makes it open for injections and attacks. We need to prevent hacking / cracking attempts on Joomla using mod_security but joomla gives problems with certain rules. It makes things really difficult to keep joomla installations secure if you dont have mod_security on the server.
If you want you can disable mod_security from your .htaccess file using following code :-
Code:
<IfModule mod_security.c>
SecFilterEngine Off
SecFilterScanPOST Off
</IfModule>
This code will disable mod_security for your account but make sure that we wont be responsible for any sorts of injections that may occur on your
website hosting.