Originally Posted by wendyg

I've been to Defcon several times; it follows directly on from the Black Hat security conference (which I've also been to a couple of times). Together, figure a couple of thousand people into security and hacking games, privacy and computers, and therefore the demographic that is most likely to opt out. I would *expect* the opt-out rate among that group to be nearly 100%. And most of them leaving over the same 24-hour period. So, you can't prove it, but circumstantially it's extremely likely to be true.

wg
(The airport is just lucky the machines escaped unscathed. )