Dr. S. (Savvas) Zannettou


Savvas is an Assistant Professor in the TPM faculty at TU Delft, an associated researcher with the Max Planck Institute for Informatics, and a core member of the IDrama Lab. Before joining TU Delft, he was a Postdoctoral Researcher at Max Planck Institute for Informatics. He obtained his PhD from the Cyprus University of Technology in 2020.


Savvas’ research focuses on applying machine learning and data-driven quantitative analysis to understand emerging phenomena on the Web, such as the spread of false information and hateful rhetoric. Also, he is interested in understanding algorithmic recommendations on the Web, their effect on end-users, and to what extend algorithms recommend extreme content. Finally, he is interested in analyzing content moderation systems to understand the effectiveness of moderation interventions on the Web.

  • Zannettou, S. (2021). "I Won the Election!": An Empirical Analysis of Soft Moderation Interventions on Twitter. Proceedings of the International AAAI Conference on Web and Social Media, 15(1), 865-876
  • Horta Ribeiro, M., Jhaver, S., Zannettou, S., Blackburn, J., Stringhini, G., De Cristofaro, E., & West, R. (2021). Do platform migrations compromise content moderation? evidence from r/the_donald and r/incels. Proceedings of the ACM on Human-Computer Interaction, 5(CSCW2), 1-24.
  • Tahmasbi, F., Schild, L., Ling, C., Blackburn, J., Stringhini, G., Zhang, Y., & Zannettou, S. (2021, April). “Go eat a bat, Chang!”: On the Emergence of Sinophobic Behavior on Web Communities in the Face of COVID-19. In Proceedings of the Web Conference 2021 (pp. 1122-1133).
  • Zannettou, S., Finkelstein, J., Bradlyn, B., & Blackburn, J. (2020, May). A quantitative approach to understanding online antisemitism. In Proceedings of the International AAAI Conference on Web and Social Media (Vol. 14, pp. 786-797).
  • Hoseini, M., Melo, P., Júnior, M., Benevenuto, F., Chandrasekaran, B., Feldmann, A., & Zannettou, S. (2020, October). Demystifying the Messaging Platforms' Ecosystem Through the Lens of Twitter. In Proceedings of the ACM Internet Measurement Conference (pp. 345-359).
  • Papasavva, A., Blackburn, J., Stringhini, G., Zannettou, S., & Cristofaro, E. D. (2021, April). “Is it a Qoincidence?”: An Exploratory Study of QAnon on Voat. In Proceedings of the Web Conference 2021 (pp. 460-471).
  • Wang, Y., Tahmasbi, F., Blackburn, J., Bradlyn, B., De Cristofaro, E., Magerman, D., Zannettou, S., & Stringhini, G. (2021). Understanding the Use of Fauxtography on Social Media. Proceedings of the International AAAI Conference on Web and Social Media, 15(1), 776-786
  • Zannettou, S., Caulfield, T., Blackburn, J., De Cristofaro, E., Sirivianos, M., Stringhini, G., & Suarez-Tangil, G. (2018, October). On the origins of memes by means of fringe web communities. In Proceedings of the Internet Measurement Conference 2018 (pp. 188-202).

Savvas Zannettou

Assistant Professor

Multi-Actor Systems

Organisation & Governance

Research interests:
Hate Speech
Content Moderation
Internet Measurements
Threat Intelligence and Abuse data

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