My Best Practices Guide is based on the slide deck from Hardening WordPress, a presentation I first made at the WordPress Seattle Meetup in April 2011. It includes additional slides incorporating additional recommendations and answers to questions asked by audience members. The guide has undergone four major revisions; the most recent was completed August 5th, 2014.
It is available at no cost in Portable Document Format (PDF).
I offer it through this website at no charge, however, I ask that you provide me with your contact information before you download. This helps me track the interest in the guide. You can watch the 2012 incarnation of the presentation at WordPress.tv, but be aware that it has changed since then. You can get the most current version by filling out this form: