What should I do if index.php has been modified?

index.php was modified because the server was hacked or the password was tampered with. The solution is to modify ftp to a read-only attribute, or turn off the security attribute to prohibit modifying "register_globals =Off" to "on ".

The reason why index.php was modified:

1. The server was hung;

2. The code is not strict and the administrator rights are taken away by others.

Solution:

1. Change ftp to read-only attribute;

2. Do not turn on the security attribute. Do not use off in register_globals = Off. Change on;

3. Check for code leaks, such as upload permissions. Then it is recommended to change the FTP password and database password.

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