Inaugural DEF CON group meeting May 17th 2013 Posted by browningreid on 2013/05/07 Posted in: DEF CON 613. Tagged: DEF CON, security, ug, user group. The first dc613 user group meeting is set for next week. Come out and meet some local security nuts and find out more about the DEF CON conference and community. Come one come all – tell your friends! Age range 14+ recommended.