In the notes for my Computer Security course, the lecturer refers to the "Australian Failure" on slide 19. I'm assuming he's referring to a well known security system failure, but I can't find what it is, does anyone know what he's talking about?
An entry like that is probably a speaking point for the presenter. I'd put something like that there if I knew of a case where a multi-level security system that related to information classification had a notable failure... in Australia.
But it's not a well-known name for any failure, and I've tried a few variations of http://www.google.com/search?q=%22australian+failure%22+security with no apparent hope of getting anything other than the slides in question.
Given the location in the presentation and the topic of that section, I'd say it's not a well-known vulnerability. It's probably a specific implementation failure example. You just don't really run into much that does that kind of classified handling outside of places that play with governments. Security there is a different world.