Cloning your website is just another level in secure your wordpress site which can be useful. Cloning simply means that you have backed up your site to a completely different place, (offline, as in a folder, so as not to have SEO issues ) where you can access it at a moment's notice if necessary.
No software system is resistant to vulnerabilities and bugs. Security holes will be found and bad guys will do their best to exploit them. Keeping your software up-to-date is a good way because reliable software sellers will fix their products once security holes are found.
Move your wp-config.php file up one directory from the WordPress root. WordPress will search for it there if it can't be found in the main directory. Additionally, nobody will be able to read the document unless they have important site FTP or SSH access.
Along with adding a secret key to your wp-config.php document, also think about changing your user password into something that's strong and unique. WordPress will let you know the strength of your password, but include amounts, use letters, and a great tip is to avoid common phrases. It's also a good idea to change your password frequently - say once.
Just ensure that you may schedule, and you choose a plugin that's up to date with the current version and release of WordPress, restore and Clicking Here replicate.