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No Place to Hide: Privacy Exposure in Anti-stalkerware Apps and Support Websites

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Secure IT Systems (NordSec 2023)

Part of the book series: Lecture Notes in Computer Science ((LNCS,volume 14324))

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Abstract

Stalkerware is malicious software found in mobile devices that monitors and tracks a victim’s online and offline activity. This harmful technology has become a growing concern, jeopardizing the security and privacy of millions of victims and fostering stalking and Intimate Partner Violence (IPV). In response to this threat, various solutions have emerged, including anti-stalkerware apps that aim to prevent and detect the use of monitoring apps on a user’s device. Organizations dedicated to assisting IPV victims have also enhanced their online presence, offering improved support and easy access to resources and materials. Considering how these tools and support websites handle sensitive personal information of users, it is crucial to assess the privacy risks associated with them. In this paper, we conduct a privacy analysis on 25 anti-stalkerware apps and 323 websites to identify issues such as PII leaks, authentication problems and 3rd-party tracking. Our tests reveal that 14/25 apps and 210/323 websites share user information with 3rd-party services through trackers, cookies or session replay. We also identified 44 domains to which sensitive data is sent, along with 3 services collecting information submitted in forms through session replay.

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Notes

  1. 1.

    http://www.downcc.com.

  2. 2.

    https://stopstalkerware.org/resources.

  3. 3.

    https://www.bjwomen.gov.cn/, https://hnflw.gov.cn/, https://www.sxwomen.org.cn/, https://www.womenvoice.cn/.

  4. 4.

    https://easylist.to/.

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Acknowledgements

This research was funded by the Office of the Privacy Commissioner of Canada (OPC), we thank them for their trust and support.

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Authors and Affiliations

  1. Concordia University, Montreal, QC, Canada

    Philippe Mangeard, Xiufen Yu, Mohammad Mannan & Amr Youssef

Authors
  1. Philippe Mangeard
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  2. Xiufen Yu
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  3. Mohammad Mannan
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  4. Amr Youssef
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Corresponding author

Correspondence to Philippe Mangeard .

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Editors and Affiliations

  1. OsloMet – Oslo Metropolitan University, Oslo, Norway

    Lothar Fritsch

  2. OsloMet – Oslo Metropolitan University, Oslo, Norway

    Ismail Hassan

  3. OsloMet - Oslo Metropolitan University, Oslo, Norway

    Ebenezer Paintsil

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Mangeard, P., Yu, X., Mannan, M., Youssef, A. (2024). No Place to Hide: Privacy Exposure in Anti-stalkerware Apps and Support Websites. In: Fritsch, L., Hassan, I., Paintsil, E. (eds) Secure IT Systems. NordSec 2023. Lecture Notes in Computer Science, vol 14324. Springer, Cham. https://doi.org/10.1007/978-3-031-47748-5_2

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  • DOI: https://doi.org/10.1007/978-3-031-47748-5_2

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  • Online ISBN: 978-3-031-47748-5

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