Helen Möllering M.Sc.

Doctoral Researcher


work +49 6151 16-27301

Work S2|20 210
Pankratiusstraße 2
64289 Darmstadt

I am a doctoral researcher and member of the Cryptography and Privacy Engineering Group (ENCRYPTO) at the Department of Computer Science of Technische Universität Darmstadt, Germany.

Honors and Awards

Work Experience


  • 2017-2019 M.Sc. in Computer Science (with honors), University of Twente, Netherlands and M.Sc. in Digital Security (with honors), Eurecom, France within the EIT Digital Master School
  • 2013-2016 B.Sc. in Computer Science (with honors), University of Münster, Germany


CORE A/A* ranked venues marked in bold.


Sébastien Andreina, Giorgia Azzurra Marson, Helen Möllering, and Ghassan Karame. BaFFLe: Backdoor detection via feedback-based federated learning. In 41. IEEE International Conference on Distributed Computing Systems (ICDCS'21), IEEE, Virtual Event, July 7-10, 2021. CORE rank A. [ pdf | web ]

Hannah Keller, Helen Möllering, Thomas Schneider, and Hossein Yalame. Balancing quality and efficiency in private clustering with affinity propagation. In 18. International Conference on Security and Cryptography (SECRYPT'21), SciTePress, Virtual Event, July 6-8, 2021. CORE rank B. [ web ]

Aditya Hegde, Helen Möllering, Thomas Schneider, and Hossein Yalame. SoK: Efficient privacy-preserving clustering. Proceedings on Privacy Enhancing Technologies (PoPETs), July 2021. CORE rank B. [ web ]

Beyza Bozdemir, Sébastien Canard, Orhan Ermis, Helen Möllering, Melek Önen, and Thomas Schneider. Privacy-preserving density-based clustering. In 16. ACM ASIA Conference on Computer and Communications Security (ASIACCS'21), ACM, Virtual Event, June 7-11, 2021. To appear. Code: Acceptance rate 19.3%. CORE rank B. [ DOI | web ]

Hossein Fereidooni, Samuel Marchal, Markus Miettinen, Azalia Mirhoseini, Helen Möllering, Thien Duc Nguyen, Phillip Rieger, Ahmad-Reza Sadeghi, Thomas Schneider, Hossein Yalame, and Shaza Zeitouni. SAFELearn: Secure aggregation for private federated learning. In 4. Deep Learning and Security Workshop (DLS'21), IEEE, Virtual Event, May 27, 2021. To appear. Full version: [ web ]

Hannah Keller, Helen Möllering, Thomas Schneider, and Hossein Yalame. Privacy-preserving clustering. In 32. Kryptotag (crypto day matters), Virtual Event, January 15, 2021. [ DOI | pdf ]

Thien Duc Nguyen, Phillip Rieger, Hossein Yalame, Helen Möllering, Hossein Fereidooni, Samuel Marchal, Markus Miettinen, Azalia Mirhoseini, Ahmad-Reza Sadeghi, Thomas Schneider, and Shaza Zeitouni. FLGUARD: Secure and private federated learning, Jan 6, 2021.


Marco Holz, Benjamin Judkewitz, Helen Möllering, Benny Pinkas, and Thomas Schneider. PEM: Privacy-preserving Epidemiological Modeling. Cryptology ePrint Archive, Report 2020/1546, December 11, 2020.


Helen Möllering. Thwarting semantic backdoor attacks in privacy preserving federated learning. Master's thesis, Eurecom, France & University of Twente, Netherlands, August 28, 2019.


Helen Möllering. Vergleich der Methoden zur Applikationsentwicklung für mobile Endgeräte mit einem Fallbeispiel unter iOS. Bachelor's thesis, Westfälische Wilhelms-Universität Münster, Germany, November 19, 2016.