Mariarosaria Taddeo is a Researcher Fellow at the Oxford Internet Institute and Deputy Director of the Digital Ethics Lab. She leads (with Luciano Floridi) the Privacy and Trust Stream (social lead) of the PETRAS research hub on IoT.  She is also a Faculty Fellow at the Alan Turing Institute.

Her recent work focuses mainly on the ethical analysis of cyber security practices, cyber conflicts, and ethics of data science. Her area of expertise is Philosophy and Ethics of Information, although she has worked on issues concerning Epistemology, Logic, and Philosophy of AI.

Taddeo’s publications focus on online trust, cyber security, and cyber warfare, and has guest-edited a number of special issues of Ethics and Information Technology (Springer), Knowledge, Technology and Policy (Springer), and Philosophy & Technology (Springer), Philosophical Transaction A (Royal Society), which significantly contributed to shape the field of Information and Computer Ethics.

In 2016, Taddeo edited (with L. Floridi) a special issue of Philosophical Transaction A (Royal Society) on The ethical impact of data science, one of the first dedicated publications in this area of research. She also edited volumes such as The Ethics of Information Warfare (with L. Floridi, Springer, 2014), Ethics and Policies for Cyber Operations (with L. Glorioso, Springer, 2016), The Ethics of Information Technologies (with K. Miller, Routledge 2016), The Responsibilities of Online Service Providers (with L. Floridi, Springer, 2017), and is the author of The Ethics of Cyber Conflicts (Routledge, forthcoming).

In 2010, she was awarded The Simon Award for Outstanding Research in Computing and Philosophy in recognition of the scholarly significance of her two articles: An Information-Based Solution for the Puzzle of Testimony and Trust (Social Epistemology, Springer) and Modelling Trust in Artificial Agents, a First Step toward the Analysis of e- Trust (Minds & Machines, Springer). In 2013, she received the World Technology Award for Ethics acknowledging the originality and her research on the ethics of cyber conflicts, and the social impact of the work that she developed in this area.

Since 2016, Taddeo serves as editor-in-chief of Minds & Machines (Springer), in the executive editorial board of Philosophy & Technology (Springer). She is also Fellow of the Council on the Future of Cybersecurity of the World Economic Forum.

Before joining the OII, Taddeo was Research Fellow in Cyber Security and Ethics at the Department of Politics and International Studies, University of Warwick. From 2010 to 2012 she held a Marie Curie Fellowship at the University of Hertfordshire, where she was working on information warfare and its ethical implications.

She holds a PhD (Doctor Europeus) in philosophy from the University of Padua. Her PhD thesis focused on the epistemic and ethical implications of the occurrences of trust in distributed artificial systems.

Research interests

information and computer ethics, philosophy of information, philosophy of technology, ethics of cyber-conflicts and cyber-security, applied ethics

Positions held at the OII

  • Research Fellow, October 2017-
  • Researcher, January 2015 – October 2017


Past projects

  • PETRAS: Internet of Things (IoT) Research Hub

    Participants: Professor Luciano Floridi, Dr Brent Mittelstadt, Dr Mariarosaria Taddeo

    The PETRAS IoT Research Hub is a consortium of 9 UK universities working together to explore critical issues in privacy, ethics, trust, reliability, acceptability, and security.

  • Landscaping Strategic Cyber Deterrence

    Participants: Dr Mariarosaria Taddeo

    This is an inter-divisional and multidisciplinary eight-month pilot study devoted to landscape the problem space and the future research on strategic cyber deterrence (SCD).

  • An Ethical Framework for the New Civic Responsibilities of Online Service Providers

    Participants: Professor Luciano Floridi, Dr Mariarosaria Taddeo

    This project aims to analyse the new civic responsibilities of Online Service Providers, and the policies regulating them.



  • Cornelissen, P.L., Kringelbach, M.L., Hansen, P.C. and Pugh, K. (2010) "Introduction" In: The neural basis of reading Cornelissen, P.L., Hansen, P.C., Kringelbach, M.L. and Pugh, K. (eds.). Oxford: Oxford University Press. ix-xii.

Conference papers

  • Taddeo, M. (2017) "Just Information Warfare", ETHICS AND POLICIES FOR CYBER OPERATIONS: A NATO COOPERATIVE CYBER DEFENCE CENTRE OF EXCELLENCE INITIATIVEPhilosophical Studies Series. Springer International Publishing. 124 67-86.

Journal articles



  • Taddeo, M. (2018) "How to Deter in Cyberspace", Hybrid CoE - Strategic Analysis. Hybrid CoE – The European Centre of Excellence for Countering Hybrid Threats,: Taylor & Francis. 1-9.




Integrity Statement

I conduct my research in line with the University's academic integrity code of practice.