CCC covers more society and political topics as well, beyond the topics mentioned above which CCC also had plenty of last time I went. Regarding attendees, I a

CCC covers more society and political topics as well, beyond the topics mentioned above which CCC also had plenty of last time I went. Regarding attendees, I am not sure - haven't been Defcon in a few years (mostly as it started being not so well organized), but went to CCC and that was gigantic in scale.