First of all here are the presentation slides:
The animation is off, so some things are definitely lost, but the essential part is there. Now that I have presented this talk to an external audience, I know what exactly I want to change! I am going to submit this talk (again!) to several conferences, and I am going to work on the “middle part. The problem I saw with this first-time presentation was that I knew the problem too well, and I should have highlighted the reasons for having more than one security model.
Still, I was happy with the questions and the fact that several people thanked me after the presentation, and I hope that this one will not be the last one! New and improved is coming!