Does My Password Go up to Eleven? The Impact of Password Meters on Password Selection

Serge Egelman ; Andreas Sotirakopoulos ; Ildar Muslukhov ; Konstantin Beznosov ; Cormac Herley

23 January 2013

Abstract: Password meters tell users whether their passwords are "weak" or "strong." We performed a laboratory experiment to examine whether these meters influenced users' password selections when they were forced to change their real passwords, and when they were not told that their passwords were the subject of a study. We observed that the presence of meters yielded significantly stronger passwords. We performed a followup field experiment to test a different scenario: creating a password for an unimportant account. In this scenario, we found that the meters made no observable difference: participants simply reused weak passwords that they used to protect similar low-risk accounts. We conclude that meters result in stronger passwords when users are forced to change existing passwords on "important" accounts and that individual meter design decisions likely have a marginal impact.

Published in: Serge Egelman, Andreas Sotirakopoulos, Ildar Muslukhov, Konstantin Beznosov, and Cormac Herley. Does My Password Go up to Eleven? The Impact of Password Meters on Password Selection. In Proceedings of Computer-Human Interaction conference, April 2013.:

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 Record created 2013-01-23, last modified 2013-05-22

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