NDLI: P3P Deployment on Websites

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P3P Deployment on Websites

Content Provider	CiteSeerX
Author	Aleecia M. Mcdonald, A. Serge Egelman, A. Lorrie Faith Cranor, A. Abdur Chowdhury, B. Steve Sheng, A.
Abstract	We studied the deployment of computer-readable privacy policies encoded using the standard W3C Platform for Privacy Preferences (P3P) format to inform questions about P3P’s usefulness to end users and researchers. We found that P3P adoption is increasing overall and that P3P adoption rates greatly vary across industries. We found that P3P had been deployed on 10 % of the sites returned in the top-20 results of typical searches, and on 21 % of the sites returned in the top-20 results of e-commerce searches. We examined a set of over 5,000 web sites in both 2003 and 2006 and found that P3P deployment among these sites increased over that time period, although we observed decreases in some sectors. In the Fall of 2007 we observed 470 new P3P policies created over a two month period. We found high rates of syntax errors among P3P policies, but much lower rates of critical errors that prevent a P3P user agent from interpreting them. We also found that most P3P policies have discrepancies with their natural language counterparts. Some of these discrepancies can be attributed to ambiguities, while others cause the two policies to have completely different meanings. Finally, we show that the privacy policies of P3P-enabled popular websites are similar to the privacy policies of popular websites that do not use P3P.
File Format	PDF
Access Restriction	Open
Subject Keyword	P3p Adoption E-commerce Search New P3p Policy Time Period Privacy Policy Different Meaning P3p-enabled Popular Website Top-20 Result Popular Website Typical Search Computer-readable Privacy Policy Critical Error Privacy Preference Natural Language Counterpart Standard W3c Platform Month Period Web Site P3p Adoption Rate P3p Policy Syntax Error P3p User Agent P3p Usefulness P3p Deployment
Content Type	Text

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