The security and defense communities are interested in novel techniques for dealing with an overwhelming and exponentially growing supply of data that chokes communication channels and restricts or prohibits real-time analysis. These same communities are also interested in solving challenging computational problems that traditional techniques have left unsolved, or in some cases, not addressed. As technology has evolved, new problems in cyberspace have emerged that are difficult to attack with conventional methods, thus requiring new techniques that are more adaptable and flexible to provide system and mission resiliency. The purpose of the symposium is to present current efforts pursuing theoretical and applied methods in computational intelligence related to security and defense problems.