If portions of your database were to disappear, how viable would your website or business be ? Let us look at what you will need to do to execute rename your login url to secure your wordpress website cloning, and how it can help your general WordPress security .
There are numerous ways to pull this off, and a lot involve re-establishing databases and much more additional resources and FTPing files, exporting and copying. Some of them are very complicated, so it's imperative that you go for the one that is right. Then you may want to check into using a plugin for WordPress backups if you are not of the persuasion that is technical.
Yes, you need to do regular backups of your website. I recommend at least a weekly database backup and a monthly "full" backup. More. Definitely more if you make changes and additions to your site. If you make changes multiple times a day, or have a community of people that are in there all the time, a daily backup should be a minimum.
WordPress is one of the most popular platforms for sites and websites. While WordPress is pretty secure out of the box, there are always going to be people who wish to create trouble by finding a way to crack into sites or accounts to cause harm or inject hidden spammy links. That is why it's essential to be sure that your WordPress installation is as secure as possible.
Do your homework and some hunting, but if you're pressed for time and this article want to get this try the WordPress safety plugin that I use. It's a relief to know that my website (and business!) are secure.