Can Johnny be a whistleblower? A qualitative user study of a social authentication Signal extension in an adversarial scenario. - Maximilian Häring; Julia Angelika Grohs; Eva Tiefenau; Matthew Smith 001; Christian Tiefenau (SOUPS @ USENIX Security Symposium, 2024)

"They are responsible for ensuring that I can continue to use the service." Investigating Users' Expectations Towards 2FA Recovery in Germany. - Eva Tiefenau; Julia Angelika Grohs; Maximilian Häring; Matthew Smith 001; Christian Tiefenau (CHI, 2025)

I Have Not Understood but Agree: Studying Informed Consent in the Context of the German COVID-19 Contact Tracing App. - Maximilian Häring; Eva Tiefenau; Christian Tiefenau; Felix Kretschmer-Pietralla; Alina Stöver; Nina Gerber (ACM Trans. Comput. Hum. Interact., 2025)