By default, the newest version of WordPress is pretty secure. Anything which may have been added to any fix hacked wordpress site plugins has been considered by the development team of WordPress . Before, WordPress did have holes but now most of them are filled up.
Is also important. You need to backup all the database and files you can easily bring back your blog like nothing happened.
Maintain control of your assets - Nothing is worse than getting your livelihood in somebody else's hands. Why take chances with something as important as your website?
Another step to take to make WordPress more secure is to upgrade WordPress to the latest version. The main reason behind this is that there come fixes for old security holes making it essential to update.
The plugin should be regularly updated to remain current with the latest WordPress release, play nice with of your plugins and have WordPress and restore capabilities. The useful reference ability to clone your website (in addition to he said regular copies ) can be helpful if you ever want to do an offline website redesign, among other things.