Also, here is a handy printable DEFCON 23 schedule.

I've been fortunate in being able to speak at DEFCON seven times (including the upcoming DEFCON XXIII). I've also covered DEFCON for Computer World Magazine.

This is the true story of a botnet that created a competitive advantage for a car dealership. This dealership found a website that offered returned lease vehicles—great cars for their inventory—but bad web design and heavy competition from other automotive dealerships made the website useless. In response, a botnet was developed to make automotive purchases with machine precision. With the bot, they could acquire any cars they wanted, without interference from competing dealerships. During its one-year life, this botnet autonomously acquired many millions of dollars in cars. Along the way, it successfully adjusted to competition from a similar bot developed by Russian hackers while maintaining a sufficiently low profile to “stay below the radar” of everyone involved.