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Cited by 323

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Targeted Online Password Guessing: An Underestimated Threat

Open access
Wang, Ding, Zhang, Zijian, Wang, Ping, Yan, Jeff, Huang, Xinyi·2016·Proceedings of the 2016 ACM SIGSAC Conference on Computer and Communications Security

Abstract

While trawling online/offline password guessing has been intensively studied, only a few studies have examined targeted online guessing, where an attacker guesses a specific victim's password for a service, by exploiting the victim's personal information such as one sister password leaked from her another account and some personally identifiable information (PII). A key challenge for targeted online guessing is to choose the most effective password candidates, while the number of guess attempts allowed by a server's lockout or throttling mechanisms is typically very small. We propose TarGuess, a framework that systematically characterizes typical targeted guessing scenarios with seven sound mathematical models, each of which is based on varied kinds of data available to an attacker. These models allow us to design novel and efficient guessing algorithms. Extensive experiments on 10 large real-world password datasets show the effectiveness of TarGuess. Particularly, TarGuess I~IV capture the four most representative scenarios and within 100 guesses: (1) TarGuess-I outperforms its foremost counterpart by 142% against security-savvy users and by 46% against normal users; (2) TarGuess-II outperforms its foremost counterpart by 169% on security-savvy users and by 72% against normal users; and (3) Both TarGuess-III and IV gain success rates over 73% against normal users and over 32% against security-savvy users. TarGuess-III and IV, for the first time, address the issue of cross-site online guessing when given the victim's one sister password and some PII.

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Metadata

Authors
Wang, D., Zhang, Z., Wang, P., Yan, J., & Huang, X.
Venue
Proceedings of the 2016 ACM SIGSAC Conference on Computer and Communications Security
Publisher
ACM
Published
2016-10-24
Pages
1242-1254
OpenAlex
W2538793708
Cited by
323
References
23
FWCI
27.64
Type
conference paper
Language
en
Open access
green

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CoChat. (2026). Citation check: Targeted Online Password Guessing: An Underestimated Threat. https://app.cochat.ai/papers/10.1145/2976749.2978339
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Wang, D., Zhang, Z., Wang, P., Yan, J., & Huang, X. (2016). Targeted Online Password Guessing: An Underestimated Threat. Proceedings of the 2016 ACM SIGSAC Conference on Computer and Communications Security. https://doi.org/10.1145/2976749.2978339

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