On his blog today, Chris Shiflett has this new post with information on his latest talk - a "PHP Security Audit HOWTO".

My talk, the PHP Security Audit HOWTO was one of my most popular yet - I have received more positive feedback from this talk than any talk I've given to date. I think the widespread satisfaction is the result of two things - the conference was based entirely upon a topic that is my particular area of expertise, and my talk was more pragmatic than usual (I tend to recite a lot of theory when discussing security). As a result, I plan to make my talks a bit more practical and relax the theoretical purity. The perfect balance of theory and practicality is hard to find, but I'll start searching for it.

If you weren't able to attend the conference, you can get the slides from the presentation here: PDF format and Flash format.