From my own experience, i know how important it is to backup and secure your Website to protect it against Attacks. I once spend a Weekend and the following Workweek in restoring a Website from an Attack only to see it attacked again. I had to move the hole Site to a new Webhoster.
I found some useful Tips how to secure your [[Wordpress]] Installation on this Blogpost.
It doesn’t take long to make your WordPress Installation a little bit more Secure but before you do it, back it up 😉