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A WEEK TO REMEMBER THE IMPACT OF BROWSER WARNING STORAGE POLICIES - PowerPoint PPT Presentation

Jun 02, 2023 •243 likes •650 views

A WEEK TO REMEMBER THE IMPACT OF BROWSER WARNING STORAGE POLICIES JOEL WEINBERGER & ADRIENNE PORTER FELT When someone clicks through an HTTPS warning, how long should the browser store that decision for? WHY DO WE CARE? REAL FALSE

  1. A WEEK TO REMEMBER THE IMPACT OF BROWSER WARNING STORAGE POLICIES JOEL WEINBERGER & ADRIENNE PORTER FELT

  3. When someone clicks through an HTTPS warning, how long should the browser store that decision for?

  5. WHY DO WE CARE?

  6. REAL FALSE ATTACK: ALARM: forget the save the decision decision as soon as as long as possible possible

  7. REAL FALSE ATTACK: ALARM: forget the save the decision decision as soon as as long as possible possible

  8. REAL FALSE ATTACK: ALARM: forget the save the decision decision as soon as as long as possible possible

  9. WHICH STORAGE POLICY SHOULD CHROME USE?

  10. NO CLEAR CONSENSUS Chrome 44 Windows Browser session Firefox 44 Windows Permanent (or session) Safari 9 Mac Browser session Safari 9 iOS Permanent UC Browser 10 Android Browser session UC Browser 2 iOS Permanent Edge 20 Windows Browser session UC Mini 10 Android Never

  11. a good policy should reduce the cost of a mistake & number of false alarms

  12. a good policy should reduce the cost of a mistake & number of false alarms

  13. a good policy should reduce the cost of a mistake & number of false alarms

  14. HOW DO PEOPLE REACT TO DIFFERENT STORAGE POLICIES?

  15. 6 EXPERIMENTAL GROUPS

  16. ADHERENCE RATE Rate at which people heed the warning’s advice

  17. EFFECT ON ADHERENCE

  18. REGRET RATE Rate at which people change their minds about a warning

  19. EFFECT ON REGRET

  20. CORRELATED RATES

  21. CHOOSING A RATE Session 1 Day 3 days 1 week 1 month 3 months Adherence 56.35% 63.96% 66.82% 69.88% 74.38% 75.28% Regret 15.98% 15.67% 17.35% 20.59% 25.56% 25.86% Δ Regret - -0.31 1.37 4.61 9.58 9.88

  22. CHOOSING A RATE Session 1 Day 3 days 1 week 1 month 3 months Adherence 56.35% 63.96% 66.82% 69.88% 74.38% 75.28% Regret 15.98% 15.67% 17.35% 20.59% 25.56% 25.86% Δ Regret - -0.31 1.37 4.61 9.58 9.88

  23. the one-week policy is working well in practice

  24. ALSO CLEAR DECISION IF: 1. User asks to forget 2. User clears browsing history 3. Client sees a valid chain

  25. 4 LESSONS LEARNED

  26. 1. Storage policies have a large effect on adherence

  27. EFFECT IN CONTEXT

  28. EFFECT IN CONTEXT

  29. EFFECT IN CONTEXT

  30. EFFECT IN CONTEXT

  31. 2. Storage policies account for difference between Chrome & Firefox

  32. CHROME & FIREFOX

  33. CHROME & FIREFOX

  34. CHROME & FIREFOX

  35. CHROME & FIREFOX

  36. CHROME & FIREFOX

  37. 3. Storage policies are confusing

  38. 4. Researchers & browsers should study storage policies

  39. A WEEK TO REMEMBER THE IMPACT OF BROWSER WARNING STORAGE POLICIES JOEL WEINBERGER & ADRIENNE PORTER FELT

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