From https://www.imdb.com/title/tt3010462/?ref_=ttpl_pl_tt

DEF CON is the world's largest hacking conference, held in Las Vegas, Nevada. In 2012 it was held for the 20th time. The conference has strict no-filming policies, but for DEF CON 20, a documentary crew was allowed full access to the event. The film follows the four days of the conference, the events and people (attendees and staff), and covers history and philosophy behind DEF CON's success and unique experience.

From the Documentary Network:
A film about the world's largest hacking convention and its 20th year running. Filmed over the summer of 2012 and containing hundreds of hours of interviews, parties, presentations and spectacle. Over 280 hours of footage was recorded in support of the documentary, and five separate camera crews were in action.

Directed by Jason Scott with camerawork by Eddie Codel, Alex Buie, Drew Wallner, Rick Dakan, Steve Fish, Kyle Way and Rachel Lovinger. 
Produced by Jeff Moss and Russ Rogers.