Hands Off my Database: Ransomware Detection in Databases through Dynamic Analysis of Query Sequences. - Lukas Iffländer; Alexandra Dmitrienko; Christoph Hagen; Michael Jobst; Samuel Kounev (CoRR, 2019)

All the Numbers are US: Large-scale Abuse of Contact Discovery in Mobile Messengers. - Christoph Hagen; Christian Weinert; Christoph Sendner; Alexandra Dmitrienko; Thomas Schneider 003 (IACR Cryptol. ePrint Arch., 2020)

Contact Discovery in Mobile Messengers: Low-cost Attacks, Quantitative Analyses, and Efficient Mitigations. - Christoph Hagen; Christian Weinert; Christoph Sendner; Alexandra Dmitrienko; Thomas Schneider 003 (ACM Trans. Priv. Secur., 2023)