Cloning your website is just another level in secure your wordpress website which may be useful. Cloning simply means that you have backed up your site to a totally different place, (offline, as in a folder, in order not to have SEO problems) where you can get it at a moment's notice if necessary.
No software system is resistant to vulnerabilities and bugs. Security holes will be discovered and bad men will do their best to exploit them. Keeping your software up-to-date is a fantastic way to stave off attacks, once security holes are found because their products will be fixed by software sellers.
Keep your WordPress Setup to date - One of the easiest and most valuable tasks you can do yourself is to ensure that your WordPress installation is upgraded. WordPress provides a notice in your dashboard to you, so there is really no reason not to do this.
Another step to take to make WordPress secure is to upgrade WordPress. The reason for this is that there also come fixes for older security holes which makes it essential to update.
You do think about needing security when your site is new but you do need to protect yourself and your investment. Having a site go down and not being able to restore Homepage it quickly may mean a big loss of customers who won't remember to look for your site again later and can't find you. Don't let that happen to you. Back your site up as soon as you get it started, and schedule backups for as long as the site is operational. This way, you check this site out will have WordPress security and peace of mind.