Ryan "1o57" Clarke self-identifies as a hacker. Formerly a member of the Advanced Programs Group (APG) at Intel, he continues to do 'security stuff' for other companies and groups. Professionally LosT's history includes working for various groups and companies, as well as for the University of Advancing Technology where he set up the robotics and embedded systems degree program. He has consulted for the Department of Energy, Fortune 50 companies, and multiple domestic and international organizations. For DEFCON he has created the Hardware Hacking Village, the LosT@Defcon Mystery Challenge, and conference badges, cryptography, and puzzles. As DEFCON’s official cryptographer and puzzle master, his activities have included aspects of network intrusion and security, social engineering, RED and BLUE team testing, mathematics, linguistics, physical security, and various other security and hacker related skillsets. 1o57's academic background and and interests include computational mathematics, linguistics, cryptography, electrical engineering, computer systems engineering and computer science-y stuff.