Despite crimped budgets and a global economic recession, BlackHat USA 2009 was in full swing July 25-30. More than 4,000 attendees traveled to Las Vegas for world-class demonstrations and presentations, delivered by celebrity hackers such as Charlie Miller and Dan Kaminsky, among others, on everything from SSL vulnerabilities to Russian cybercrime organizations, to iPhone hacking demos to security flaws in the Social Security Administration's number designation system. And in between sessions and demonstrations, IT professionals and amateur hackers alike had fun at the myriad parties and receptions, while testing their luck at the roulette tables. Here are a few scenes from the big event.