Although NSPW is more of a workshop than a conference, it has earned its right to be included in this list. Since 1992, NSPW has been offering a unique forum for cyber security specialists involved in researching high-risk, high-opportunity paradigms to present their ideas. The discussions always challenge the current limitations of information security tools and technology, while disputing ng-held beliefs or the very foundations of security. You’re bound to get fresh, new ideas from attending this workshop!

http://www.nspw.org/2016