Sebastian Lange has been working at Microsoft as Program Manager on the .NET Framework Common Language Runtime security team for over two years. He focuses on security configuration, administration, type safety verification, and secure hosting of the CLR. Prior to his work on security, Sebastian has done research and design in artificial intelligence, both in industry as well as in university. He holds a B.A. in Computer Science and a B.A. in Philosophy from Macalester College. In his spare time, Sebastian practices a variety of musical instruments, and can be seen playing the electric viola for his band Elysian up and down the west coast.