- Check for a backdoor:
- Check if the database has been corrupted. Check for Java Script and new user registration, their rights…
- Get the server logs to see what technic was used and which component is involved.
- Clean up, upadte the components and reopen the site (ftp site / 705)
-Access your site using ftp.
-Check for the latest folder and files that have been changed. Are there any index.php files that have recently been changed?