I back up my blogs regularly using a free plugin WP DB Backup. If anything happens I can restore my blog to the settings. I use my site to be scanned by WP Security Scan plugin and suspicious-looking asks to be blocked by WordPress Firewall to fix hacked wordpress.
Everything you have worked for will go with this, should the server of your site return. You'll make no sales, get no traffic or signups to your site, until you get the website back up again and in short, you are out of business.
Keeping your WordPress website up-to-date is one of the easiest things you can do. For the past couple of versions, the ability to install updates has been included by WordPress. Not only that, but websites are notified every time a new upgrade becomes available.
Along with adding a secret key to your wp-config.php document, also consider changing your user password to something that's strong and unique. A great tip is to avoid common phrases, use letters, and look at here include amounts, although you will be told the strength of your password by wordPress. It's also a good idea to change your password regularly - say once every six months.
The plugin should be updated play nice with your other plugins, to stay current with the latest WordPress release and have WordPress cloning and restore capabilities. The ability to clone your website (in addition to regular backups) can be helpful if you ever need to do an offline website redesign, among other things.