Philip Rinehart is a member of the steering committee leading the Mac OS X Lab Deployment Project (www.macosxlabs.org) and manages Macs as a support specialist at Yale University. He has been using Macintosh Computers since the days of the Macintosh SE, and Mac OS X since its Developer Preview Release. He presented on OS X security at MacWorld 2004, and is an active member of the Mac OS X Lab project. He has contributed to many areas of the project. Before coming to Yale, he worked as a Unix system administrator for a dot-com company. In writing this article, he would like to acknowledge the contributions from Richard Glaser, University of Utah for his editing, and ideas in this article.