We have seen a few people’s WordPress installs getting hacked because they aren’t keeping their WordPresses up to date. You need to do these updates. They are simple to do and won’t cause any problems. In fact, they’ll just solve problems and prevent them.
Update your WordPress every time you see the notification in your WordPress backend. And if you just haven’t logged in in a while, do yourself a favour and log in to check.
Make sure you also keep the theme up to date. We release new versions of our themes as well to help prevent security issues. Specifically the thumb.php file needs to be updated. This is a real threat and taking heed of this warning will save you a ton of time.