DEFCON has taken place in Las Vegas. This is one of the world’s largest annual hacker conventions, held every year in Las Vegas, Nevada. Its a so-called ‘White Hat’ hackers conference with those who do not engage in malicious hacking. Means its more a ‘social engineering’ contest which has given some big companies food for thought.
The first DEF CON took place in June 1993.
See the video report from ‘The Huffington Post':
Many of the attendees at DEFCON include computer security professionals, journalists, lawyers, federal government employees, crackers, cyber-criminals, security researchers, and hackers with a general interest in computer code, computer architecture, phone phreaking, hardware modification, and anything else that can be “hacked”.
The event consists of several tracks of speakers about computer- and hacking-related subjects, as well as social events and contests in everything from creating the longest Wi-Fi connection and cracking computer systems to who can most effectively cool a beer in the Nevada heat.
Other contests include lockpicking, robotics-related contests (discontinued), art, slogan, coffee wars (not currently running), scavenger hunt and Capture the Flag. Capture the Flag (CTF) is perhaps the best known of these contests.
It is a hacking competition where teams of hackers attempt to attack and defend computers and networks. CTF has been emulated at other hacking conferences as well as in academic and military contexts.