<p> <strong> Sandy Clark (Mouse) </strong> has been taking things apart since the age of two, and still hasn&#8217;t learned to put them back together. An active member of the hacker community, her professional work includes an Air Force Flight Control computer, a simulator for NASA, singing at Carnegie Hall, and a minor in history. She is currently fulfilling a childhood dream, pursuing a Ph.D. in C.S. at the University of Pennsylvania. A founding member of Toool-USA, she also enjoys puzzles, toys, Mao (the card game), and anything that involves night vision goggles. Her research explores human scale security and the unexpected ways that systems interact. </p>