enhance the security of a codeigniter script -- 2

Job ID: 30815374

Budget: ₹1,000 – ₹5,000 INR

We need you to make the codeigniter script so secure that it is not hacked to take access of the hosting account. PHP based frameworks are vulnerable to give shell access to hackers and give them elevated control.
You are required to plug the loopholes in CI script which submits HTML formatted data and uploads files so that hackers are not able to upload any malicious scripts or create malicious files on the server.
Related categories: PHP Web Security Codeigniter MySQL HTML