Christian Tiefenau

22 papers A* 5A 4Journal 6Unranked 6
YearRankTypeTitle / Venue / Authors
2026 — conf
PowerMeter - User Friendly Power Analysis for HCI Studies.
CHI Extended Abstracts
Florin Martius, Lukas Struck, Nele Borgert, Anna-Marie Ortloff, Simon Lenau, Kay Schröder, Theo Sans-Raimbault, Leonard Heinrich, Matthew Smith, Christian Tiefenau
2025 A* conf
"They are responsible for ensuring that I can continue to use the service." Investigating Users' Expectations Towards 2FA Recovery in Germany.
CHI
Eva Tiefenau, Julia Angelika Grohs, Maximilian Häring, Matthew Smith, Christian Tiefenau
2025 A conf
"You go now! No trouble!" Understanding the Offboarding Process in Companies from an IT Security Perspective.
SOUPS
Christina Detsika, Timo Jagusch, Nora Weidner, Larissa Weir, Florin Martius, Christian Tiefenau
2025 J jnl
I Have Not Understood but Agree: Studying Informed Consent in the Context of the German COVID-19 Contact Tracing App.
ACM Trans. Comput. Hum. Interact.
Maximilian Häring, Eva Tiefenau, Christian Tiefenau, Felix Kretschmer-Pietralla, Alina Stöver, Nina Gerber
2025 A* conf
Out of Sight, Out of Mind? Exploring Data Protection Practices for Personal Data in Usable Security & Privacy Studies.
CHI
Florin Martius, Luisa Jansen, Lukas Struck, Arthi Arumugam, Lisa Geierhaas, Anna-Marie Ortloff, Matthew Smith, Christian Tiefenau
2024 — conf
Can Johnny be a whistleblower? A qualitative user study of a social authentication Signal extension in an adversarial scenario.
SOUPS @ USENIX Security Symposium
Maximilian Häring, Julia Angelika Grohs, Eva Tiefenau, Matthew Smith, Christian Tiefenau
2023 A conf
Adventures in Recovery Land: Testing the Account Recovery of Popular Websites When the Second Factor is Lost.
SOUPS
Eva Gerlitz, Maximilian Häring, Charlotte Theresa Mädler, Matthew Smith, Christian Tiefenau
2023 A conf
Evolution of Password Expiry in Companies: Measuring the Adoption of Recommendations by the German Federal Office for Information Security.
SOUPS
Eva Gerlitz, Maximilian Häring, Matthew Smith, Christian Tiefenau
2023 A* conf
Less About Privacy: Revisiting a Survey about the German COVID-19 Contact Tracing App.
CHI
Maximilian Häring, Eva Gerlitz, Matthew Smith, Christian Tiefenau
2023 A conf
SoK: I Have the (Developer) Power! Sample Size Estimation for Fisher's Exact, Chi-Squared, McNemar's, Wilcoxon Rank-Sum, Wilcoxon Signed-Rank and t-tests in Developer-Centered Usable Security.
SOUPS
Anna-Marie Ortloff, Christian Tiefenau, Matthew Smith
2021 — —
Behavioral Studies with IT-Administrators - Updating in Complex Environments and Securing Web Servers.
Christian Tiefenau
2021 — conf
Never ever or no matter what: Investigating Adoption Intentions and Misconceptions about the Corona-Warn-App in Germany.
SOUPS @ USENIX Security Symposium
Maximilian Häring, Eva Gerlitz, Christian Tiefenau, Matthew Smith, Dominik Wermke, Sascha Fahl, Yasemin Acar
2021 — conf
Replicating a Study of Ransomware in Germany.
EuroUSEC
Anna-Marie Ortloff, Maike Vossen, Christian Tiefenau
2020 — conf
Security, Availability, and Multiple Information Sources: Exploring Update Behavior of System Administrators.
SOUPS @ USENIX Security Symposium
Christian Tiefenau, Maximilian Häring, Katharina Krombholz, Emanuel von Zezschwitz
2020 J jnl
Security, Availability, and Multiple Information Sources: Exploring Update Behavior of System Administrators.
CoRR
Christian Tiefenau, Maximilian Häring, Katharina Krombholz, Emanuel von Zezschwitz
2019 J jnl
"Please enter your PIN" - On the Risk of Bypass Attacks on Biometric Authentication on Mobile Devices.
CoRR
Christian Tiefenau, Maximilian Häring, Mohamed Khamis, Emanuel von Zezschwitz
2019 A* conf
A Usability Evaluation of Let's Encrypt and Certbot: Usable Security Done Right.
CCS
Christian Tiefenau, Emanuel von Zezschwitz, Maximilian Häring, Katharina Krombholz, Matthew Smith
2019 J jnl
Making Privacy Graspable: Can we Nudge Users to use Privacy Enhancing Techniques?
CoRR
Christian Tiefenau, Maximilian Häring, Eva Gerlitz, Emanuel von Zezschwitz
2018 — conf
Deception Task Design in Developer Password Studies: Exploring a Student Sample.
SOUPS @ USENIX Security Symposium
Alena Naiakshina, Anastasia Danilova, Christian Tiefenau, Matthew Smith
2018 J jnl
The Struggle is Real: Analyzing Ground Truth Data of TLS (Mis-)Configurations.
CoRR
Christian Tiefenau, Emanuel von Zezschwitz
2017 J jnl
Why Do Developers Get Password Storage Wrong? A Qualitative Usability Study.
CoRR
Alena Naiakshina, Anastasia Danilova, Christian Tiefenau, Marco Herzog, Sergej Dechand, Matthew Smith
2017 A* conf
Why Do Developers Get Password Storage Wrong?: A Qualitative Usability Study.
CCS
Alena Naiakshina, Anastasia Danilova, Christian Tiefenau, Marco Herzog, Sergej Dechand, Matthew Smith