1 / 40

Privacy Protecting Technologies

Explore the impact of technology on personal privacy and how it can be used to improve privacy. Dive into web browsing enhancements like Ad-Subtract, Bugnosis, and more. Discover anonymous remailers, web caches, and encryption options for anonymous web browsing. Uncover the unresolved issues and practical applications of privacy protecting technology.

Download Presentation

Privacy Protecting Technologies

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. Privacy Protecting Technologies

  2. Technology: Value Neutral? • Does technology, on average, help or hinder personal privacy?

  3. The Big Idea • We can use technology to improve privacy

  4. Web Browsing • Ad-Subtract • Bugnosis

  5. Ad Subtract

  6. “Search Sanity”

  7. Advantages: Multiplatform Easy to debug Client/server Disadvantages: Doesn’t work with SSL Install footprint Need to parse HTML Ad Subtract: Client-Side Java Proxy

  8. Bugnosis

  9. Features: Browser helper object Accesses HTTP & HTTPS Downloads updates Designed for journalists Bugnosis

  10. Private Messaging • PGP – first generation • Hush Mail – web based • The Martus Project – application specific • Disappearing Ink (Omniva) - Deletion

  11. PGP • Add-on • Plug-in • S/MIME vs. OpenPGP • Political Baggage

  12. Hush Mail • Second-generation • Web-based • Java Crypto Client

  13. Hush Mail

  14. Hush Mail

  15. Hush Mail

  16. Hush Mail

  17. Hush Mail Interface

  18. HushMail Diagram

  19. Disappearing Ink / Omniva • Self-destructing email for people who want to use it. • Why bother? Because it’s hard to delete things

  20. Email gets copies a lot

  21. Mix-Nets, Web & IP transport • Chaum’s mix-net scheme • The big idea: anonymity needs company • 1 mix: you trust the mixer • More mixes -> Less Trust • Mixing needs to be in space and time

  22. Practical applications of mixers: • Anonymous Remailers • Anonymous Browsing • Anonymous Publishing

  23. Anonymous Remailers • Anonymous posting on Usenet • anon.penet.fi • Based in Finland • Operated by Julf Helsingius • 70,000 registered users; 10,000 messages/day • February 1995 – Church of Scientology demands the True Name of a nym an144108@anon.penet.fi • Revealed on February 8 to belong to tc@alumni.caltech.edu under order from Finish Court • (Information applied to the Finish court had apparently been somewhat misleading) • August 30 – After second court case, anon.penet.fi shut down • full details at www.xs4all.nl/~kspaink/cos/rnewman/anon/penet.html

  24. Craig’s List

  25. Key features of an anonymous remailer • Strips identity from messages passing through • Provides mapping of nyms to “true names” • But only if replies are important • Optional: • Mixing - only if traffic in and out is observable • Encryption -

  26. Anonymous Web Browsing • Web Caches • Anonymizer • Anonymous Transport Services: • Freedom • Onion Routing

  27. Web Caches cache-ntc-ah12.proxy.aol.com - - [10/May/2003:22:47:31 -0400] "GET /clips/1999.TR.LCS35-FountainOfIdeas.pdf HTTP/1.0" 200 65536 "http://aolsearch.aol.com/aol/search?query=fountain+ideas&page=2" "Mozilla/4.0 (compatible; MSIE 6.0; AOL 7.0; Windows NT 5.1; .NET CLR 1.0.3705)“ cache-ntc-ah12.proxy.aol.com - - [10/May/2003:22:47:39 -0400] "GET /clips/1999.TR.LCS35-FountainOfIdeas.pdf HTTP/1.1" 206 688128 "-" "Mozilla/4.0 (compatible; MSIE 6.0; AOL 7.0; Windows NT 5.1; .NET CLR 1.0.3705)“ cache-ntc-ah12.proxy.aol.com - - [10/May/2003:22:47:44 -0400] "GET /clips/1999.TR.LCS35-FountainOfIdeas.pdf HTTP/1.1" 206 1024 "-" "Mozilla/4.0 (compatible; MSIE 6.0; AOL 7.0; Windows NT 5.1; .NET CLR 1.0.3705)“ cache-ntc-ah12.proxy.aol.com - - [10/May/2003:22:47:47 -0400] "GET /clips/1999.TR.LCS35-FountainOfIdeas.pdf HTTP/1.1" 206 75 "-" "Mozilla/4.0 (compatible; MSIE 6.0; AOL 7.0; Windows NT 5.1; .NET CLR 1.0.3705)“ cache-ntc-ah12.proxy.aol.com - - [10/May/2003:22:47:52 -0400] "GET /clips/1999.TR.LCS35-FountainOfIdeas.pdf HTTP/1.1" 206 725650 "-" "Mozilla/4.0 (compatible; MSIE 6.0; AOL 7.0; Windows NT 5.1; .NET CLR 1.0.3705)"

  28. Cache with anonymity

  29. Anonymizer

  30. Anonymizer.com rewrites URLs <td width=90 style='background:aqua; text-align:center; font:bold; font-family:Arial'> <a href='http://anon.free.anonymizer.com/http://www.simson.net/photos.php' title='Photos by and of Simson Garfinkel'> Photos </a> </td> <td width=90 style='background:lime; text-align:center; font:bold; font-family:Arial'> <a href='http://anon.free.anonymizer.com/http://www.simson.net/pubs.php' title='Publications, both academic and journalistic.'> Pubs </a> </td> <td width=90 style='background:magenta; text-align:center; font:bold; font-family:Arial'> <a href='http://anon.free.anonymizer.com/http://www.simson.net/projects.php' title='Current projects'> Projects </a> </td>

  31. Private IP Transport • Onion Routing • Freedom

  32. Freedom

  33. Unresolved Issues • How do you buy a book anonymously?

  34. [Anonymous] Publication Systems • anon.penet.fi was really about the right to anonymous publication on Usenet (1996) • Napster (1999 – 2001) • Freenet

  35. References: • EPIC Online Guide to Privacy Protecting tools: • http://www.epic.org/privacy/tools.html

More Related