Whether you have a WordPress website, Joomla, Drupal or any other CMS platform it is very important to keep it up to date. By that I don’t mean the content, though that is also important. I mean keeping your version of, let’s say, WordPress up to date.
Much like Microsoft do for Windows and other products, these guys are regularly checking for errors, potential security issues and other things that need fixing. When they release a new version, you should back your website up and update it. This will not only help prevent viruses getting in, but also make your website function better. That’s the idea anyway.
If you remain too far behind on your website update, your website host may actually take it down until you catch up – because it really is a serious security concern.
The conclusion? Update and update your website regularly.