The 5th edition of YSTS (You Shot The Sheriff) has announced its call for papers. It will be held in Sao Paulo, Brazil on May 16th, 2011.
You can download it from the following link: https://packetstormsecurity.com/files/download/95409/ysts2011-cfp.txt
Source: https://packetstormsecurity.com/files/95409/YSTS-5th-Edition-Call-For-Papers.html