All Stories

  1. A Comparative Long-Term Study of Fallback Authentication Schemes

    Article • May 2024, ACM (Association for Computing Machinery)

    Philipp Markert

  2. Understanding Users' Interaction with Login Notifications

    Article • May 2024, ACM (Association for Computing Machinery)

    Philipp Markert

  3. “Someone Definitely Used 0000”: Strategies, Performance, and User Perception of Novice Smartphone-Unlock PIN-Guessers

    Article • October 2023, ACM (Association for Computing Machinery)

    Philipp Markert

  4. “It’s Just a Lot of Prerequisites”: A User Perception and Usability Analysis of the German ID Card as a FIDO2 Authenticator

    Article • September 2022, ACM (Association for Computing Machinery)

    Philipp Markert

  5. How Secure Are 4 and 6-digit Mobile Phone PINs?

    Article • ACM Transactions on Privacy and Security, November 2021, ACM (Association for Computing Machinery)

    Philipp Markert