Platform for Privacy Preferences (P3P)

I have been an active participant in the World Wide Web Consortium's Platform for Privacy Preferences Project (P3P) effort. P3P enables Web sites to express their privacy practices in a standard format that can be retrieved automatically and interpreted easily by user agents. P3P user agents will allow users to be informed of site practices (in both machine- and human-readable formats) and to automate decision-making based on these practices when appropriate. Thus users need not read the privacy policies at every site they visit.

I currently serve as chair of the P3P Specification Working Group at W3C, which is working on the P3P 1.1 specification.

I helped develop a P3P user agent software called the AT&T Privacy Bird. A beta version of this software is available to the public as a free download at

My P3P Publications

Other Resources

Last updated 7 November 2003 by Lorrie Faith Cranor