Urgent: Fix Wordpress Security Issues

I'm seeking an experienced Wordpress security specialist to urgently address security issues on my website.

Key Details:
- The site is currently under attack with both hacking attempts and unauthorized access.
- I am unsure whether any security plugins are in place so a comprehensive security audit is needed.

This project requires a professional with an in-depth understanding of Wordpress security, including experience dealing with hacking attempts and unauthorized access. The ideal candidate should also be able to conduct a security audit and implement necessary measures to secure the site. Immediate availability is a plus.

Here is what you will doing as well as making the site secure?
- Deleting all fake users who have registered as administrator but are not admins
-Updating all plug ins
-Updating a banner and the URL that needs to go on the main page
-Updating the entire plugins and setting it to automatic updates
-Cleaning the site from any malware or potential attacks
-Changing admin e-mail address currently there to our actual admin address.

We will give you wp-admin access.