I just changed the WordPress and Moved a Root install

I just changed the WordPress and Moved a Root install to its own directory but that did not change how I log into WP.
Is there a way to change how to Log in to WP dashboard? or does it always have to be http://www.example.com/wp-admin?

It seems like loving into wp-admin as a website is vulnerable to hackers. I thought by Moving a Root install to its own directory it would be safer...