Not Safe Login

[ Moderator note: moved to Fixing WordPress. ]

Hi, guys.

I went to login in my blog today and saw that the login page is not safe. Besides that, the url link gets modified from /wp-login to a url full of other characters.

This is the print of my login page: http://imgur.com/a/lpK13

I’m afraid someone can break in my blog.

Any help on how I can make it safer? Maybe changing the url to something less obvious?

Thanks a lot in advance!