"You still use the password after all" - Exploring FIDO2 Security Keys in a Small Company. - Florian Farke; Lennart Lorenz; Theodor Schnitzler; Philipp Markert; Markus Dürmuth (SOUPS @ USENIX Security Symposium, 2020)

Knock, Knock. Who's There? On the Security of LG's Knock Codes. - Raina Samuel; Philipp Markert; Adam J. Aviv; Iulian Neamtiu (SOUPS @ USENIX Security Symposium, 2020)

This PIN Can Be Easily Guessed: Analyzing the Security of Smartphone Unlock PINs. - Philipp Markert; Daniel V. Bailey; Maximilian Golla; Markus Dürmuth; Adam J. Aviv (SP, 2020)

This PIN Can Be Easily Guessed. - Philipp Markert; Daniel V. Bailey; Maximilian Golla; Markus Dürmuth; Adam J. Aviv (CoRR, 2020)

"I have no idea what they're trying to accomplish: " Enthusiastic and Casual Signal Users' Understanding of Signal PINs. - Daniel V. Bailey; Philipp Markert; Adam J. Aviv (SOUPS @ USENIX Security Symposium, 2021)

Using a Blocklist to Improve the Security of User Selection of Android Patterns. - Collins W. Munyendo; Miles Grant; Philipp Markert; Timothy J. Forman; Adam J. Aviv (SOUPS @ USENIX Security Symposium, 2021)

Towards Quantum Large-Scale Password Guessing on Real-World Distributions. - Markus Dürmuth; Maximilian Golla; Philipp Markert; Alexander May 001; Lars Schlieper (IACR Cryptol. ePrint Arch., 2021)

On the Security of Smartphone Unlock PINs. - Philipp Markert; Daniel V. Bailey; Maximilian Golla; Markus Dürmuth; Adam J. Aviv (ACM Trans. Priv. Secur., 2021)

"It's Just a Lot of Prerequisites": A User Perception and Usability Analysis of the German ID Card as a FIDO2 Authenticator. - Markus Keil; Philipp Markert; Markus Dürmuth (EuroUSEC, 2022)

"As soon as it's a risk, I want to require MFA": How Administrators Configure Risk-based Authentication. - Philipp Markert; Theodor Schnitzler; Maximilian Golla; Markus Dürmuth (SOUPS @ USENIX Security Symposium, 2022)

"The Same PIN, Just Longer": On the (In)Security of Upgrading PINs from 4 to 6 Digits. - Collins W. Munyendo; Philipp Markert; Alexandra Nisenoff; Miles Grant; Elena Korkes; Blase Ur; Adam J. Aviv (USENIX Security Symposium, 2022)

"I Knew It Was Me": Understanding Users' Interaction with Login Notifications. - Philipp Markert; Leona Lassak; Maximilian Golla; Markus Dürmuth (CoRR, 2022)

"Someone Definitely Used 0000": Strategies. - Daniel V. Bailey; Collins W. Munyendo; Hunter A. Dyer; Miles Grant; Philipp Markert; Adam J. Aviv (EuroUSEC, 2023)

A Transcontinental Analysis of Account Remediation Protocols of Popular Websites. - Philipp Markert; Andrick Adhikari; Sanchari Das (CoRR, 2023)

Usability and security of risk-based authentication. - Philipp Markert (2023)

A Comparative Long-Term Study of Fallback Authentication Schemes. - Leona Lassak; Philipp Markert; Maximilian Golla; Elizabeth Stobert; Markus Dürmuth (CHI, 2024)

Understanding Users' Interaction with Login Notifications. - Philipp Markert; Leona Lassak; Maximilian Golla; Markus Dürmuth (CHI, 2024)