William R. Cheswick (http://cheswick.com) is Chief Scientist at Lumeta Corporation, which explores and maps clients' network infrastructures and finds perimeter leaks. Formerly he was a senior researcher at Lucent Bell Labs, where he did pioneering work in the areas of firewall design and implementation, PC viruses, mailers, and Internet munitions.
Steven M. Bellovin (http://stevebellovin.com) is a Fellow at AT&T Labs Research, where he works on networks, security, and, especially, why the two don't get along. He is a member of the National Academy of Engineering and is one of the Security Area directors of the Internet Engineering Task Force. Long ago he was one of the creators of NetNews.
Aviel D. Rubin (http://avirubin.com) is an Associate Professor in the Computer Science Department at Johns Hopkins University and serves as the Technical Director of their Information Security Institute. He was previously Principal Researcher in the Secure Systems Research Department at AT&T Laboratories and is the author of several books.
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