Database table prefix scan

The scan

This scan checks the database table prefix is not set to wp_ or wordpress_, because they're too easy to guess.

The fix

SecuPress will ask you which tables you want to rename (most of them are selected by default) and will rename them. In addition, SecuPress will edit the wp-config.php file.

What if the fix doesn't work? 

Try following this tutorial from wpbeginner.com:

http://www.wpbeginner.com/wp-tutorials/how-to-change-the-wordpress-database-prefix-to-improve-security/

This feature is scheduled for release in a future version of SecuPress.