Full Stack Developer: Server Security & PHP Upgrade

Job ID: 38504078

Budget: $250 – $750 USD

We are currently experiencing a suspected Webshell attack on our server. The situation includes:

- Unwanted Google Adsense banners appearing in unexpected places.
- Hidden third-party JavaScript code found within certain .js files.
- We are currently using PHP 5.3 and want to upgrade our website code to a more secure PHP 7.X version.
- We use Cloudflare services to protect our site.
- We operate multiple servers, including a web server, database server, and image server.
- We are considering setting up a new server, upgrading PHP and other security components, and, once confirmed to be secure, migrating users to the new server.

Additionally, our website is in Korean, and the PHP code comments are also written in Korean. I can collaborate with you throughout the project.

Please let me know if you have the experience and skills to help us with these tasks. I look forward to your response.
------------------------
* I have reposted the project under my original account after initially registering it with a foreign account