Call For Papers for Positive Hack Days V which will take place May 26th through the 27th, 2015 in Moscow, Russia.
You can download it from the following link: https://packetstormsecurity.com/files/download/129375/phdays5-cfp.txt
Source: https://packetstormsecurity.com/files/129375/Positive-Hack-Days-V-Call-For-Papers.html