We do stuff like this through our school -- usually participating are the graduate students. We gather a pretty good handful of colleges in the area and have a competition to see who can aquire the most points (get points by allowing good users in keeping bad users out). The "red" team is the hackers and they are security professional that really know their stuff........anyway i heard its a lot of fun and its sponsered obviously be a large security firm to discover vulnerabilities and such.
With Mac gaining on bits and pieces of market share they better come up with a little better security policies. They are no longer a computer you purchase because there is hardly any security issues with them (as they were in the past) so HUP to it Mac!