https://forum.defcon.org/ The CTF will be hosted on live VoIP lines routed through a modified asterisk PBX. This will allow participants to dial in to the CTF from a real world telephone routable phone number allowing them to hunt the PBX for flags. en Tue, 16 Jun 2026 15:50:37 GMT vBulletin 60 https://forum.defcon.org/images/misc/rss.png https://forum.defcon.org/