Bill Cheswick's Home Page

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I am interested in visualization, user interfaces, security and security usability, typography, tinkering, and science, medicine, and technology in general.

Felix, qui potuit rerum cognoscere causus. - Virgil; (“Happy is he who knows the cause of things.”)

I love living in the future!


CV, includes patents and stuff; Publications; Talks; Bio and short bio; A nice movie about me; If you'd like me to speak at your conference, speaker information; My blog and (RSS feed).

Current Projects

Older projects

Firewalls and Internet Security: Repelling the Wily Hacker

cover of the second edition of the firewalls book The Second Edition is available in several languages. Details available at It is more fun to have written than to write.

Internet Mapping

small Internet map Hal Burch and I ran the Internet mapping project while at Bell Labs and Lumeta Corp. The thumbnail reveals more information, data, and a gallery of some interesting visualizations of the Internet.

These Internet maps have appeared in dozens of books, magazines, posters, and papers worldwide. Our technology remains at Lumeta, so you should contact Lumeta if you wish to use the images. I am always willing to discuss them with interested parties.

Recently, AT&T put up Internet maps at the Washington airports for the 2009 inauguration. These versions are not available outside of AT&T.

I am still interested in the visualization challenges these kinds of data pose, but am not working on it much.



ticket stub for United flight 93 on 10 September 2001

lot's of small images of locks This lock is your assurance of security.

Brian Clapper is a boofhead. Arden is a boofhead as well.