Hello there, I'm Alex
I can help you with this. My bid is for fixing and removing all hack back-doors from your site and implementing the BEST security for joomla, you will NOT have ANY hacking problems after I implement my security in your site, I did this to most of my clients and NONE of them had problems after this, your site will be fully secure against any threats.
Please don't hesitate to check my feedback page to see what other clients write about me.
Thank you
Cheers
Alex