DEF CON 27, Aviation Village, Exploding Lemur's 'In The Air And On The Air Aviation Radio Systems' January 20, 2020 by Marc Handelman in Aviation Security, Conferences, DEF CON 27, Education, Information Security Thanks to Def Con 27 Volunteers, Videographers and Presenters for publishing their superlative conference videos via their YouTube Channel for all to see, enjoy and learn.