As promised here is the link to the presentation I gave on 4th November 2011 at the Perth AUSOUG conference.
Update : I was awarded Best Paper for this. Thanks everyone!
I hope you enjoy it, and find it informative.
http://prezi.com/89xxuz4ekmvv/oracle-apex-41-security/
Just a shame you don't hear my, err..."charismatic" commentary ;-)
Scott
