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Personal Privacy and the Public Internet

Personal Privacy and the Public Internet

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Personal Privacy and the Public Internet

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  1. Personal Privacy and the Public Internet John E. Carter Kennesaw State University IT 3700

  2. How Much Did You Tell? • "Most privacy violations don't come from whopping big intrusions but from the aggregation of hundreds of small bits of knowledge, none of which individually seems important. Who cares if someone knows your ZIP code or your social security number? What about a tossed-out receipt from your ATM or an old credit card receipt? What's your mother's maiden name? But put those violations all together and you're well on your way to identity theft -- or worse." • InfoWorld. March 20, 2001.

  3. How Did You Tell? • Cookies • Web Bugs

  4. How Safe Are Cookies? • Cookies were intended to provide long-term “state” information, such as user ID’s or site preferences. • By design, only a Web server in the domain of the server that creates a cookie can read that cookie. • Internet Explorer 5.5 and 6.0 have a “backdoor” that allows any Web server to read any cookie on the user’s PC.

  5. What’s in a Cookie? • www.alphaworks.ibm.com FALSE / FALSE 1104538901 awMember John_Carter • www.alphaworks.ibm.com FALSE / FALSE 1104538901 awMemberEmail jecarter@juno.com • gserv.zdnet.co.uk FALSE / FALSE 1016756726 Apache 216.175.77.224.481801001031849261

  6. What’s in a Cookie? • www.alphaworks.ibm.com FALSE / FALSE 1104538901 awMember John_Carter • www.alphaworks.ibm.com FALSE / FALSE 1104538901 awMemberEmail jecarter@juno.com • gserv.zdnet.co.uk FALSE / FALSE 1016756726 Apache 216.175.77.224.481801001031849261

  7. Innocent Website?

  8. Web Bugs - Invisible Invaders

  9. What Bugnosis Sees

  10. What Do The Links Mean? • As the “invisible” graphics are downloaded from the specified server, some minimum information is being collected about the viewer by that server: • Operating System • Browser Type and Version • IP Address • Previous Page Viewed

  11. How Is the Information Used? • The intention is to track hits on pages and your page viewing to provide targeted advertising. • If you visit two sites with digital camera information, the next ads you see will relate to digital cameras and accessories.

  12. Do You Want Them to Know Where You’ve Been? • The Network Advertising Initiative has a page that provides “opt-out” from most advertising data collection: • http://www.networkadvertising.org/optout_nonppii.asp

  13. Summary • Do not reveal personal information inadvertently. • Turn on cookie notices in your Web browser, and/or use cookie management software. • Keep a “clean” e-mail address. • www.eff.org/Privacy/eff_privacy_top_12.html

  14. Questions? The original paper is on-line at http://pigseye.kennesaw.edu/~jcarter3/3700paper.html

  15. Thank You