yes, you should limit access to phpmyadmin and sqlitemanager to you only. wamp comes with access to phpmyadmin and sqlitemanager to allow localhost (you) only. you just need to complete one more step to further secure you phpmyadmin by adding a password for the default mysql root user.
here is a link to my step-by-step tutorial on correctly setting up privileges for the mysql root user:
[
forum.wampserver.com]
CyberSpatiumWAMP English Forum Admin