Mary DeRosa is Deputy Counsel to the President for National Security Affairs. She has been an Associate, and later a Member, of the Markle Task Force since its inception in 2002. She has contributed to the following reports produced by the Task Force: Protecting America’s Freedom in the Information Age in 2002, Creating a Trusted Network for Homeland Security in 2003, Implementing a Trusted Information Sharing Environment in 2006, Mobilizing Information to Prevent Terrorism in 2006, and Nation at Risk in 2009.