See photos taken from Black Hat 2009 and Defcon, both held last week in Las Vegas, Nev. Researchers went into detail about the discovery and disclosure of 19 security flaws they found in Mercedes-Benz vehicles, which have all been fixed. An inside look at how nation-states use social media to influence, confuse and divide and why cybersecurity researchers should be involved. The photos were taken at Defcon 2009 and 2009, and were taken by researchers at Black Hat and BlackHat 2009.
Source: https://threatpost.com/scenes-black-hat-and-defcon-2009-080409/73009/