If you do not have good protection on your website, files can easily get lost. Some of those files may be saved in your computer and easily replaceable, but what about the rest of them? Where are you going to get them from again, if you lose the first time to them? Especially rename your login url to secure your wordpress website is very important. Long-term sites have a good deal of data and have made a number of documents. Recreating that all would be a nightmare, and not something any business owner would like to do.
Don't depend on your internet host - Many men and women rely on their web host to"do all that technical stuff for me", not realizing that sometimesthey don't! Far better to have the responsibility lie with you, instead of from your website here control.
Yes, you want to do regular backups of your website. I recommend at least a weekly database backup and a monthly "full" backup. More, if possible. Definitely if you make regular additions and changes to your website. If you make changes multiple times every day, or have a community of people which are in there all the time, a daily backup should be a minimum.
Along with adding a secret key to your wp-config.php document, also consider changing your user password to something that is strong and unique. click this A great idea is to avoid phrases, use letters, and include amounts, although wordPress will let you know the strength of your password. It's also a good idea to change your password regularly - say once every six months.
There is another problem you have with WordPress. People always know where they can login and they also could drop by with your login form and try out a different combination of passwords and user accounts. In order to stop this from happening you need to set up Login Lockdown. It is a plugin that only allows users to attempt and login with a wrong password three times. Following that the IP address will be banned from the server for a certain timeframe.