Secure your mysql
From mx Help Wiki
Securing MySQL
(the following instructions adapted from http://www.securityfocus.com/infocus/1726)
Change admin password
Changing the database administrator's password (empty by default). First run MySQL (if it is not already):
yourterminal$ mysql -u root -p
when prompted for a password leave it blank (i.e., just hit 'return')
then change the administrator's password as follows:
mysql> SET PASSWORD FOR 'root'@'localhost' = PASSWORD('yournewpaswd');
But replace yournewpaswd (keep the single quotes in there though) with a password that you will not forget.