The post also comes from Moz (still need to get used to calling it that lols), but gives you some really good info about how hackers work, and how you can keep your WP site safe.
you can read the post here.
“If you work in online marketing, the chances are good that you've worked on, are working on, or will at some point work on a WordPress site. If you work with wordpress.org in any capacity, this post is for you (much of this post doesn't apply to *.wordpress.com hosted sites).”