The Prevalence of Single Sign-On on the Web: Towards the Next Generation of Web Content Measurement. Ardi, C. & Calder, M. In Proceedings of the 2023 ACM on Internet Measurement Conference, of IMC '23, pages 124–130, New York, NY, USA, 2023. Association for Computing Machinery.
The Prevalence of Single Sign-On on the Web: Towards the Next Generation of Web Content Measurement [link]Paper  doi  abstract   bibtex   
Much of the content and structure of the Web remains inaccessible to evaluate at scale because it is gated by user authentication. This limitation restricts researchers to examining only a superficial layer of a website: the landing page or public, search-indexable pages. Since it is infeasible to create individual accounts across thousands of webpages, we examine the prevalence of Single Sign-On (SSO) on the web to explore the feasibility of using a few accounts to authenticate to many sites. We find that 58% of the top 10K websites with logins are accessible with popular 3rd-party SSO providers, such as Google, Facebook, and Apple, indicating that leveraging SSO offers a scalable solution to access a large volume of user-gated content.
@inproceedings{10.1145/3618257.3624841,
author = {Ardi, Calvin and Calder, Matt},
title = {The Prevalence of Single Sign-On on the Web: Towards the Next Generation of Web Content Measurement},
year = {2023},
isbn = {9798400703829},
publisher = {Association for Computing Machinery},
address = {New York, NY, USA},
url = {https://doi.org/10.1145/3618257.3624841},
doi = {10.1145/3618257.3624841},
abstract = {Much of the content and structure of the Web remains inaccessible to evaluate at scale because it is gated by user authentication. This limitation restricts researchers to examining only a superficial layer of a website: the landing page or public, search-indexable pages. Since it is infeasible to create individual accounts across thousands of webpages, we examine the prevalence of Single Sign-On (SSO) on the web to explore the feasibility of using a few accounts to authenticate to many sites. We find that 58\% of the top 10K websites with logins are accessible with popular 3rd-party SSO providers, such as Google, Facebook, and Apple, indicating that leveraging SSO offers a scalable solution to access a large volume of user-gated content.},
booktitle = {Proceedings of the 2023 ACM on Internet Measurement Conference},
pages = {124–130},
numpages = {7},
keywords = {web measurement, web authentication, top lists, single sign-on},
location = {Montreal QC, Canada},
series = {IMC '23}
}

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