https://forum.defcon.org/ The ? Cube Challenge is a multi-layered, complex puzzle that requires you to use all your hacking and analytical skills to solve it. The cube is loaded with riddles and puzzles that must be solved one by one to progress further towards the ultimate goal. en Wed, 22 Apr 2026 22:56:48 GMT vBulletin 60 https://forum.defcon.org/images/misc/rss.png https://forum.defcon.org/