You've Been Warned

You’ve Been Warned An Empirical Study of the Effectiveness of Web Browser Phishing Warnings Serge Egelman Lorrie Cranor Jason Hong

Phishing Warnings ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

So Do They Work? ,[object Object],[object Object],[object Object],[object Object],[object Object]

Communication-Human Information Processing (C-HIP) Model ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],M.S. Wogalter. Communication-Human Information Processing (C-HIP) Model. In M.S. Wogalter, editor, Handbook of Warnings , pages 51-61. Lawrence Erlbaum Associates, 2006. L. F. Cranor. What Do They “Indicate?”: Evaluating security and privacy indicators. Interactions , 13(3):45-47, 2006.

Study Design ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Study Design ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

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Results Overview ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Condition Name Size Clicked Phished Firefox 20 20 0 (0%) Active IE 20 19 9 (45%) Passive IE 10 10 9 (90%) Control 10 9 9 (90%)

Attention Switch & Maintenance ,[object Object],[object Object],Condition Name Sample Size Saw Warning Firefox 20 20 Active IE 20 19 Passive IE 10 8

Attention Switch & Maintenance ,[object Object],[object Object],[object Object],Condition Name Sample Size Read Warning Firefox 20 13 Active IE 20 10 Passive IE 10 3

Attention Switch & Maintenance ,[object Object],[object Object],[object Object],Condition Name Sample Size Recognized Warning Firefox 20 4 Active IE 20 10 Passive IE 10 5

Warning Comprehension ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Condition Name Sample Size Understood Meaning Firefox 20 17 Active IE 20 10 Passive IE 10 3

Warning Comprehension ,[object Object],[object Object],[object Object],[object Object],Condition Name Sample Size Understood Choices Firefox 20 19 Active IE 20 12 Passive IE 10 5

Attitudes and Beliefs ,[object Object],[object Object],[object Object],[object Object]

Attitudes and Beliefs ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Attitudes and Beliefs ,[object Object],[object Object],[object Object]

Motivation and Warning Behaviors ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Environmental Stimuli ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Limitations ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Recommendations ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Recommendations ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

C MU U sable P rivacy and S ecurity Laboratory http://cups.cs.cmu.edu/

You've Been Warned

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You've Been Warned