Doug Bayer is Director, Windows Security at Microsoft. He is responsible for delivering the core security functionality for the Windows platform and for Windows-based devices. Doug joined Microsoft in 1994 as part of the MSN service with responsibility for the delivery of Internet-based servers and services. He made significant contributions to Microsoft products such as Windows 2000, Windows XP, Site Server, Microsoft Commercial Internet Server (MCIS) and other systems that Microsoft customers rely on every day. Prior to joining Microsoft, Bayer served as Director of Client/Server Development at Dun & Bradstreet Software, Director of Data Access Development at Lotus Development Corp and Department Head at AT&T Bell Laboratories. Bayer graduated Cum Laude, Phi Beta Kappa from Knox college with a B.A. in Physics. He then earned a PhD. in Experimental Nuclear Physics from Michigan State University. Doug enjoys spending his free time in the outdoors swimming, running, skiing, gardening and roller blading. On rainy days, he enjoys working with computers.