It's every other year - there are physical badges in between[0][1]. [0] http://potatohatsecurity.tumblr.com/post/126411303994/defcon-23-badge-challenge http://

It's every other year - there are physical badges in between[0][1]. [0] http://potatohatsecurity.tumblr.com/post/126411303994/defcon-23-badge-challenge http://potatohatsecurity.tumblr.com/post/126411303994/defcon... [1] https://hackaday.io/project/7087-defcon-23-badge-hacking https://hackaday.io/project/7087-defcon-23-badge-hacking