Images from the Twittersphere: DEF CON China [Beta]! Posted 5.11.18 Our first DEF CON outside the U.S. is in full swing and day one is on the books! The twittersphere has been providing a window into that first day, so get a load of the photos people have been posting from DEF CON China! Online Registration is open for DEF CON China [Beta]! Posted 4.13.18 Online registration for DEF CON China [bet