Keynote Speaker at DEFCON 17

Thursday, July 30th, 2009 at 1:53:26 PM · Photo Archive/2009/defcon_17

A man in a shirt delivers a speech to a crowded audience at the DEFCON 17 conference, discussing computer and consumer electronics. He speaks into two microphones and gestures with his hands while a laptop and other electrical devices sit on the podium in front of him.