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Protecting Your Online Privacy
Everybody Wants To Track You &
Nobody Wants To Get Tracked!
Ram Parthasarathy
@ramanujam
ra...
Privacy

Privacy is an individual’s right to control
the collection, use and disclosure of
personal information

Saturday,...
Who Tracks You Online?
• Google, Facebook, Twitter, LinkedIn
• Analytics Tools
• Ad serving companies
• Location based app...
Saturday, November 9, 13
Why are you being tracked?
• Advertising is the backbone of many big internet services
• Providing you a better user exper...
How is tracking done?

Saturday, November 9, 13
Social Buttons

Saturday, November 9, 13
HTTP Cookies & Flash Cookies

First Party Cookies
vs
Third Party Cookies

Saturday, November 9, 13
Ever-cookies (aka Zombie Cookies)
Ad Tags & Pixels
iFrames

Saturday, November 9, 13
How is this data used?

Saturday, November 9, 13
Relevant Search Results - Good!

IP spoofed with a proxy

Saturday, November 9, 13
Recommendations - Good!

Saturday, November 9, 13
Info based on user action - Good!

Saturday, November 9, 13
Excessive Ad Retargeting - Bad!

Saturday, November 9, 13
Identity Theft, Selling data - Ugly!

Saturday, November 9, 13
How Unique Are You ?

Saturday, November 9, 13
How Unique Are You ?

33 Bits

Saturday, November 9, 13
How Unique Are You ?

33 Bits
There are only 6.6 billion people in the world, so you
only need 33 bits (more precisely, 32...
How Unique Are You ?

33 Bits
There are only 6.6 billion people in the world, so you
only need 33 bits (more precisely, 32...
https://panopticlick.eff.org/
Saturday, November 9, 13
How many trackers?

Saturday, November 9, 13
What can YOU do?

Saturday, November 9, 13
BUT...

Saturday, November 9, 13
Really... What can YOU do?

Know and decide what you want to expose
and what you don’t want to.
Choose the corresponding a...
Some Common Methods
• The basic one - think for a second before you post something on the
internet!
• Disable Javascript (...
Browser Extensions	

Ghostery
ghostery.com

Saturday, November 9, 13

Disconnect
disconnect.me

ShareMeNot
sharemenot.cs.w...
Thank You!
Questions?
@ramanujam

Saturday, November 9, 13
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Protecting your online privacy

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Everybody wants to track you and nobody wants to get tracked!

Who tracks you online?
How is tracking done?
Why are you being tracked and how that data is used?
What are some steps you can take to prevent tracking and protect your online privacy.

Published in: Technology, News & Politics
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Transcript of "Protecting your online privacy"

  1. 1. Protecting Your Online Privacy Everybody Wants To Track You & Nobody Wants To Get Tracked! Ram Parthasarathy @ramanujam ramanuj.me Saturday, November 9, 13
  2. 2. Privacy Privacy is an individual’s right to control the collection, use and disclosure of personal information Saturday, November 9, 13
  3. 3. Who Tracks You Online? • Google, Facebook, Twitter, LinkedIn • Analytics Tools • Ad serving companies • Location based apps & services (run keeper, starbucks, yelp, groupon) • ISPs, CDNs, Data brokers Saturday, November 9, 13
  4. 4. Saturday, November 9, 13
  5. 5. Why are you being tracked? • Advertising is the backbone of many big internet services • Providing you a better user experience • Cheap and fast processing power and storage (Big Data!) • Security & National Intelligence • Spam, identity theft etc Saturday, November 9, 13
  6. 6. How is tracking done? Saturday, November 9, 13
  7. 7. Social Buttons Saturday, November 9, 13
  8. 8. HTTP Cookies & Flash Cookies First Party Cookies vs Third Party Cookies Saturday, November 9, 13
  9. 9. Ever-cookies (aka Zombie Cookies) Ad Tags & Pixels iFrames Saturday, November 9, 13
  10. 10. How is this data used? Saturday, November 9, 13
  11. 11. Relevant Search Results - Good! IP spoofed with a proxy Saturday, November 9, 13
  12. 12. Recommendations - Good! Saturday, November 9, 13
  13. 13. Info based on user action - Good! Saturday, November 9, 13
  14. 14. Excessive Ad Retargeting - Bad! Saturday, November 9, 13
  15. 15. Identity Theft, Selling data - Ugly! Saturday, November 9, 13
  16. 16. How Unique Are You ? Saturday, November 9, 13
  17. 17. How Unique Are You ? 33 Bits Saturday, November 9, 13
  18. 18. How Unique Are You ? 33 Bits There are only 6.6 billion people in the world, so you only need 33 bits (more precisely, 32.6 bits) of information about a person to determine who they are. Saturday, November 9, 13
  19. 19. How Unique Are You ? 33 Bits There are only 6.6 billion people in the world, so you only need 33 bits (more precisely, 32.6 bits) of information about a person to determine who they are. - Arvind Narayanan, Princeton, http://33bits.org Saturday, November 9, 13
  20. 20. https://panopticlick.eff.org/ Saturday, November 9, 13
  21. 21. How many trackers? Saturday, November 9, 13
  22. 22. What can YOU do? Saturday, November 9, 13
  23. 23. BUT... Saturday, November 9, 13
  24. 24. Really... What can YOU do? Know and decide what you want to expose and what you don’t want to. Choose the corresponding action. Saturday, November 9, 13
  25. 25. Some Common Methods • The basic one - think for a second before you post something on the internet! • Disable Javascript (Too aggressive!) • Disable Third-Party cookies (Default on Safari. Firefox is trying to). • Check Android App Permissions before you install. • Use incognito mode. • Use DuckDuckGo Saturday, November 9, 13
  26. 26. Browser Extensions Ghostery ghostery.com Saturday, November 9, 13 Disconnect disconnect.me ShareMeNot sharemenot.cs.washington. edu/
  27. 27. Thank You! Questions? @ramanujam Saturday, November 9, 13
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