CyCon 2013 is an annual NATO Cooperative Cyber Defence Centre of Excellence conference that is conducted with the technical cooperation of the IEEE Estonia Section on June 4-7, 2013 in Tallinn, Estonia. CyCon 2013 will focus on the technical, strategic and legal implications of using automatic methods in cyber conflicts. The conference will be organized along two tracks: a Strategic Track and a Technical Track. Legal aspects will be incorporated in these two tracks.