One classic story details a computer manager who began locking the door to the computer room to keep the scruffy hippies out at night. When he returned in the morning, he found the entire door to his office had been removed, along with an apologetic note explaining that it had gotten in the way of someone's work.
Of course, things have changed over the decades. These days, your average hacker is just as likely to be a 17-year-old junior punk or goth with an anarchy T-shirt and a sticker of Tux the Penguin (the mascot for the free operating system Linux) on his or her laptop. And while DefCon may have begun as an invite-only affair for the old guard of the computer security elite, these days you're more likely to see the punk kid sitting poolside, making out with a goth chick wearing nothing but strategically placed duct tape, drunk on vodka and Red Bull and the simple gleeful awareness that comes from being surrounded by 5,000 people who are just like you.
This is what DefCon has come to represent for the hacking community: a combination of trade show and Burning Man, debauchery and deconstruction in one sleepless package.