This is one of my most passionate subjects when it comes to Joomla Security. Why?
Well, working for the company that provides the official Joomla Hosting to the Joomla project we've learn't a few things over the years about Joomla Hosting and Security. We've also watched hosts come and go as they fail to provide a secure hosting environment or service to their users. We regularly keep up to date with issues that users are facing by our participation in the Security section of the Joomla Community Forum.
Too many times people's website security suffers due to failure on their hosts behalf. So without boring you with all the negative points of far too many hosts out there, here is what we recommend: