Privacy Risks Online David Wagner, C79, 4/2/2013 Tuesday, April 2, - - PowerPoint PPT Presentation

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Privacy Risks Online David Wagner, C79, 4/2/2013 Tuesday, April 2, - - PowerPoint PPT Presentation

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Privacy Risks Online David Wagner, C79, 4/2/2013 Tuesday, April 2, 13 Who is Ghyslain Razaa? Tuesday, April 2, 13 Tuesday, April 2, 13 Tuesday, April 2, 13 Tuesday, April 2, 13 Tuesday, April 2, 13 Tuesday, April 2, 13 Tuesday, April 2, 13

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Privacy Risks Online

David Wagner, C79, 4/2/2013

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Who is Ghyslain Razaa?

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Who is Thelma Arnold?

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Thelma Arnold

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Thelma Arnold AOL user 4417749

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movies for dogs best dog for older owner loneliness tea for good health mature living landscapers in lilburn, ga school supplies for Iraq children homes sold in shadow lake subdivision gwinnett county georgia safest place to live the best season to visit Italy hand tremors dry mouth bipolar eugene oregon jaylene arnold ...

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movies for dogs best dog for older owner loneliness tea for good health mature living landscapers in lilburn, ga school supplies for Iraq children homes sold in shadow lake subdivision gwinnett county georgia safest place to live the best season to visit Italy hand tremors dry mouth bipolar eugene oregon jaylene arnold ...

user 4417749’s AOL searches

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how to kill your wife wife killer poop dead people pictures of dead people killed people dead pictures murder photo steak and cheese photo of death death dead people photos photo of dead people www.murderpeople.com decapitated photos ...

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how to kill your wife wife killer poop dead people pictures of dead people killed people dead pictures murder photo steak and cheese photo of death death dead people photos photo of dead people www.murderpeople.com decapitated photos ...

user 17556639’s AOL searches

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What’s going on here?

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information scarcity information

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information abundance information

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“big data”: companies collect lots of data about you

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  • thers disclose information about you

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you disclose information about yourself

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you disclose information about yourself (for better or worse)

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that was 2009.

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that was 2009. today?

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that was 2009. today? 69% of employers have rejected applicants based upon content found

  • n social networking sites.

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you disclose data about yourself

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you disclose data about yourself (for better or worse)

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Discuss “recreational use

  • f alcohol” on wall

Liked a page with details about health condition Full birth date on profile Liked a page about sexual orientation

2.3 million 2.6 million 4.7 million 20 million

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why?

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why do people post stuff they later regret?

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why do people say they are concerned about privacy, but then act differently?

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why do people say they are concerned about privacy, but then act differently?

67% of consumers “very concerned” about privacy [FTC2000] yet, most consumers willing to bargain away privacy for even minor rewards

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what factors influence human behavior around privacy?

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why?

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because we don’t realize the risk

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Facebook learns what web sites you visit:

  • a. only if you consent when you sign up
  • b. only on web sites that you log into via

your Facebook account

  • c. on most popular sites
  • d. in some cases, but privacy law prevents

Facebook from sharing this information with others

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A Facebook app gets information about you:

  • a. only if your profile is public
  • b. only if you consent at the time when

the app accesses your information

  • c. only if the app is approved by Facebook
  • d. only if you install the app

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63% of Facebook users haven’t customized privacy settings for apps

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bounded rationality

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we often accept the defaults

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because companies have an incentive to get us to share more

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salience

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when you’re focused on a task (e.g., checking out a new Facebook app), you tend to ignore distractions (e.g., the disclosure consent screen)

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delayed feedback

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delayed feedback no connection between action and consequence +

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discounting

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discounting (immediate gratification outweighs future risks)

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$50 today $100 in 1 year

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$50 today 1% chance of $10,000 in 1 year

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$50 loss today 1% chance of $10,000 loss in 1 year

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nothing $50 today + 1% chance of $10,000 loss in 1 year

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do nothing post to Facebook: fun today, tiny chance I’ll regret it later

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prospect theory

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600 people are infected and going to die

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save 200 people 1/3 chance of saving 600 (2/3 chance of saving no one) 600 people are infected and going to die

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save 200 people 1/3 chance of saving 600 (2/3 chance of saving no one) 600 people are infected and going to die 72%

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600 people are infected and going to die

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400 people will die 2/3 chance that 600 will die (1/3 chance that 0 will die) 600 people are infected and going to die

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400 people will die 2/3 chance that 600 will die (1/3 chance that 0 will die) 600 people are infected and going to die 78%

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facing gains:

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facing gains: lock in sure gains

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facing gains: lock in sure gains risk-averse

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facing gains: facing losses: lock in sure gains risk-averse

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facing gains: facing losses: lock in sure gains gamble for chance at no loss risk-averse

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facing gains: facing losses: lock in sure gains gamble for chance at no loss risk-averse risk-seeking

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makes evolutionary sense...

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makes evolutionary sense... ...but makes people underestimate low-probability risks

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implications for other fields?

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preventive medicine

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Aviation safety

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the future is coming

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  • given just a low-quality photo of you,

researchers were able to recognize you and find your Facebook profile 40% of the time

  • de-anonymized 15% of users on a dating

site, using just their picture

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new technology will be awesome

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new technology will be awesome ...and possibly a little frightening

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this is your future!

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backup slides

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“you have no privacy anyway, get over it”

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the right to be left alone

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control over information about yourself

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hyperbolic discounting

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hyperbolic discounting (a pitfall in how we discount)

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$50 today $100 in 1 year

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$50 in 5 years $100 in 6 years

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$50 in 5 years $100 in 6 years

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$50 in 4 years $100 in 5 years

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$50 in 3 years $100 in 4 years

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$50 in 2 years $100 in 3 years

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$50 in 1 years $100 in 2 years

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$50 in 0 years $100 in 1 years

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$50 in 0 years $100 in 1 years regret

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