Last year over 20,000 people attended. Many of the attendees at DEF CON include computer security professionals, journalists, lawyers, federal government employees, security researchers, students, and hackers with a general interest in software, computer architecture, phone phreaking, hardware modification, and anything else that can be “hacked.”
Federal law enforcement agents from the FBI, DoD, United States Postal Inspection Service, and other agencies regularly attend DEF CON. The event includes several tracks of speakers on as well as social events, Wargames and hacking contests.
Cost to attend: $260 USD for all four days, cash only at the door. There is no pre-registration.
For details visit: https://www.defcon.org/html/defcon-25/dc-25-index.html