The HITB crew is calling on the community of hackers, makers, builders, and breakers to send them their 30 minute talk abstracts for consideration to be included in the 3-day single-track agenda. Taking place at De Beurs van Berlage on the 28th, 29th and 30th of May, this single track, like the Haxpo itself, is completely free to attend.
You can download it from the following link: https://packetstormsecurity.com/files/download/125329/hitbhaxpo-cfp.txt
Source: https://packetstormsecurity.com/files/125329/Hack-In-The-Box-Haxpo-Call-For-Papers.html

