An Investigation of Shoulder Surfing Attacks on Touch-Based Unlock Events

Author:

Schneegass Stefan1,Saad Alia1,Heger Roman1,Delgado Rodriguez Sarah2,Poguntke Romina3,Alt Florian4

Affiliation:

1. University of Duisburg-Essen, Essen, Germany

2. University of the Bundeswehr, München, Germany

3. KUKA Deutschland GmbH, Augsburg, Germany

4. University of the Bundeswehr, Munich, Germany

Abstract

This paper contributes to our understanding of user-centered attacks on smartphones. In particular, we investigate the likelihood of so-called shoulder surfing attacks during touch-based unlock events and provide insights into users' views and perceptions. To do so, we ran a two-week in-the-wild study (N=12) in which we recorded images with a 180-degree field of view lens that was mounted on the smartphone's front-facing camera. In addition, we collected contextual information and allowed participants to assess the situation. We found that only a small fraction of shoulder surfing incidents that occur during authentication are actually perceived as threatening. Furthermore, our findings suggest that our notions of (un)safe places need to be rethought. Our work is complemented by a discussion of implications for future user-centered attack-aware systems. This work can serve as a basis for usable security researchers to better design systems against user-centered attacks.

Funder

Deutsche Forschungsgemeinschaft

Publisher

Association for Computing Machinery (ACM)

Subject

Computer Networks and Communications,Human-Computer Interaction,Social Sciences (miscellaneous)

Reference29 articles.

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4. PrivacyScout: Assessing Vulnerability to Shoulder Surfing on Mobile Devices;Bace Mihai;Proceedings on Privacy Enhancing Technologies,2022

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1. Social Engineering Shoulder Surfing Attacks (SSAs): A Literature Review. Lessons, Challenges, and Future Directions;Communications in Computer and Information Science;2024

2. Pattern unlocking guided multi‐modal continuous authentication for smartphone with multi‐branch context‐aware representation learning and auto encoder;Transactions on Emerging Telecommunications Technologies;2023-12

3. Better the Devil You Know: Using Lost-Smartphone Scenarios to Explore user Perceptions of Unauthorised Access;Proceedings of the 2023 European Symposium on Usable Security;2023-10-16

4. Shoulder Surfing on Mobile Authentication: Perception vis-a-vis Performance from the Attacker's Perspective;2023 IEEE International Conference on Intelligence and Security Informatics (ISI);2023-10-02

5. Two-way Robust Authentication Method to Prevent Shoulder Surfing Attack;2023 Second International Conference on Augmented Intelligence and Sustainable Systems (ICAISS);2023-08-23

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