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DEF CON 31 DEF CON 31 Call Index Theme & Style Guide COVID-19 Policy Call Index Press Registration Open Call for Exhibitors Closed Call for Music Closed Call for Parties & Meetups Closed Call for Papers Closed Policy @ DEF CON Closed Call for Workshops Closed Call for Demo Labs Closed Call for Trainers Closed Vendor Application Closed Call for Villages Closed Call for Contests & Events Closed Contests, Events, Villages, Parties, Talks, Workshops, Vendors, Press, Music......