Nicolas E. Diaz Ferreyra

Nicolas Diaz Ferreyra, Dr. Ing.

Address         Oststr. 99
Room             BB 918
Phone            +49 203 379 1075
Fax                 +49 203 379 4490
Email             nicolas.diaz-ferreyra[at]

Current Research

I am a postdoctoral fellow at the University of Duisburg-Essen working on areas of privacy and cybersecurity. In November 2015 I joined the research training group “User-Centred Social Media” as a PhD candidate. My research consists of developing user-centred technologies for risk communication and privacy awareness in social networks sites. My PhD thesis “Instructional Awareness: A User-centred Approach for Risk Communication in Social Network Sites” brings together knowledge from computer science and media psychology focusing on issues related to usability, risk awareness and ethics in social media platforms. Since, August 2018, I am a member of the H2020 project “PDP4E: Methods and Tools for GDPR Compliance through Privacy and Data Protection Engineering”.
My research interests and areas of expertise are among others:

  • Human-computer Interaction
  • Software Engineering
  • Artificial Intelligence
  • Machine Learning
  • Privacy and Cybersecurity
  • Internet governance
  • Public policy development


since 11/15 Research Fellow at the Department Software Engineering
12/13 - 10/15 M.Sc. Information Systems and Engineering
Thesis: Model for the definition and management of software platforms for manufactoring companies
12/06 - 11/13 High Scool Studies, Escuela a Industrial Superior - Universidad Nacional del Litoral, Argentina
Specialization: Building Technician



  • Borchert, Angela; Díaz Ferreyra, Nicolas Emilio; Heisel, Maritta
    Balancing trust and privacy in computer-mediated introduction : Featuring risk as a determinant for trustworthiness requirements elicitation
    In: Proceedings of the 15th International Conference on Availability, Reliability and Security / ARES 2020: The 15th International Conference on Availability, Reliability and Security Virtual Event, Ireland, August, 2020 / 2020
    ISBN: 978-1-4503-8833-7
  • Borchert, Angela; Emilio Díaz Ferreyra, Nicolás; Heisel, Maritta
    Building Trustworthiness in Computer-Mediated Introduction : A Facet-Oriented Framework
    In: 11th International Conference on Social Media and Society: Diverse Voices - Promises and Perils of Social Media for Diversity / SMSociety 2020; Virtual, Online; Canada; 22 - 24 July 2020 / 2020 S. 39 - 46
    ISBN: 9781450376884
  • Díaz Ferreyra, Nicolas Emilio; Kroll, Tobias; Aïmeur, Esma; Stieglitz, Stefan; Heisel, Maritta
    Preventative nudges : Introducing risk cues for supporting online self-disclosure decisions
    In: Information Jg. 11 2020 Nr. 8, S. 399
    ISSN: 2078-2489
  • 2019

  • Díaz Ferreyra, Nicolás Emilio;
    Instructional awareness : a user-centred approach for risk communication in social network sites
    Duisburg, Essen 2019 1 Band (verschiedene Seitenzählung)
  • Diaz Ferreyra, Nicolas Emilio; Meis, Rene; Heisel, Maritta
    Learning from online regrets : From deleted posts to risk awareness in social network sites
    In: ACM UMAP 2019 Adjunct - Adjunct Publication of the 27th Conference on User Modeling, Adaptation and Personalization / UMAP 2019; Larnaca; Cyprus; 9 - 12 June 2019 / 2019 S. 117 - 125
    ISBN: 978-1-4503-6711-0
  • 2018

  • Diaz Ferreyra, Nicolas Emilio; Hecking, Tobias; Ulrich Hoppe, H.; Heisel, Maritta
    Access-Control Prediction in Social Network Sites : Examining the Role of Homophily
    In: Social Informatics: Proceedings, Part II / 10th International Conference, SocInfo 2018, St. Petersburg, Russia, September 25-28, 2018; / Staab, Steffen; Koltsova, Olessia; Ignatov, Dmitry I. (Hrsg.), 2018 S. 61 - 74
    ISBN: 978-3-030-01159-8; 978-3-030-01158-1 ISSN: 1611-3349
  • Diaz Ferreyra, Nicolas Emilio; Meisy, Rene; Heiselz, Maritta
    At Your Own Risk: Shaping Privacy Heuristics for Online Self-disclosure
    In: Proceedings of the 6th Annual Conference on Privacy, Security and Trust / PST 2018; Belfast, Northern Ireland; United Kingdom; 28 - 30 August 2018 / McLaughlin, Kieran; Ghorbani, Ali; Sezer, Sakir; Lu, Rongxing; Chen, Liqun; (Hrsg.), 2018 S. 8514186
    ISBN: 9781538674932
  • Rudinac, Stevan; Chua, Tat-Seng; Diaz-Ferreyra, Nicolas; Friedland, Gerald; Gornostaja, Tatjana; Huet, Benoit; Kaptein, Rianne; Lindén, Krister; Moens, Marie-Francine; Peltonen, Jaakko; Redi, Miriam; Schedl, Markus; Shamma, David A.; Smeaton, Alan; Xie, Lexing
    Rethinking Summarization and Storytelling for Modern Social Multimedia
    In: MultiMedia modeling: Proceedings, Part I / 24th International Conference, MMM 2018, Bangkok, Thailand, February 5-7, 2018 / Schoeffmann, Klaus; Chalidabhongse, Thanarat H.; Ngo, Chong Wah; Aramvith, Supavadee; O'Connor, Noel E.; Ho, Yo-Sung; (Hrsg.), 2018 S. 632 - 644
    ISBN: 978-3-319-73603-7; 9783319736020
  • 2017

  • Diaz Ferreyra, Nicolas Emilio; Meis, Rene; Heisel, Maritta
    Online self-disclosure : From users’ regrets to instructional awareness
    In: Machine Learning and Knowledge Extraction: Proceedings / First IFIP TC 5, WG 8.4, 8.9, 12.9 International Cross-Domain Conference, CD-MAKE 2017, Reggio, Italy, August 29 – September 1, 2017 / Holzinger, Andreas; Kieseberg, Peter; Tjoa, A Min; Weippl, Edgar R.; (Hrsg.), 2017 S. 83 - 102
    ISBN: 9783319668079; 978-3-319-66808-6 ISSN: 1611-3349; 0302-9743
  • Diaz Ferreyra, Nicolas Emilio; Meis, Rene; Heisel, Maritta
    Should user-generated content be a matter of privacy awareness? : A position paper
    In: IC3K 2017 - Proceedings of the 9th International Joint Conference on Knowledge Discovery, Knowledge Engineering and Knowledge Management / IC3K 2017; Funchal, Madeira; Portugal; 1 -3 November 2017 / Jg. 3 2017 S. 212 - 216
    ISBN: 9789897582738