I’ve been looking into this issue over the past couple of days and here are a few links that I’ve found that might be helpful for those of you who maintain and run a Wordpress Blog.
Hardening Wordpress @Wordrpess Codex
The Wordpress Security Whitepaper @ blogsecurity.net
Securing Wordpress @ tech-evangelist.com
20 Wordpress Security Plugins and Tips to Keep Hackers Away
Securing your wordpress Install the foolproof way @ WPWebhost.com