Leerssen, P. J. (2021). Platform research access in Article 31 of the Digital Services Act. In R. Heiko, S. Marlene, & T. Erik (Eds.), To Break Up or Regulate Big Tech? Avenues to Constrain Private Power in the DSA/DMA Package (pp. 55-61). Max Planck Institute for Innovation and Competition. https://ssrn.com/abstract=3932809
Leerssen, P. J., Dobber, T., Helberger, N., & de Vreese, C. H. (2021). News from the ad archive: how journalists use the Facebook Ad Library to hold online advertising accountable. Information, Communication & Society. https://doi.org/10.1080/1369118X.2021.2009002
2020
Keller, D., & Leerssen, P. (2020). Facts and Where to Find Them: Empirical Research on Internet Platforms and Content Moderation. In N. Persily, & J. A. Tucker (Eds.), Social Media and Democracy: The State of the Field, Prospects for Reform (pp. 220-251). (SSRC Anxieties of Democracy). Cambridge University Press. https://doi.org/10.1017/9781108890960[details]
Leerssen, P. J. (2020). The Soap Box as a Black Box: Regulating Transparency in Social Media Recommender Systems. European Journal of Law and Technology, 11(2). https://ejlt.org/index.php/ejlt/article/view/786
Leerssen, P., Ausloos, J., Zarouali, B., Helberger, N., & de Vreese, C. H. (2019). Platform ad archives: promises and pitfalls. Internet Policy Review, 8(4). https://doi.org/10.14763/2019.4.1421[details]
Leerssen, P. (2015). Cut Out By The Middle Man: The Free Speech Implications Of Social Network Blocking and Banning In The EU. Journal of Intellectual Property, Information Technology and Electronic Commerce Law, 6(2), 99-119. https://www.jipitec.eu/issues/jipitec-6-2-2015/4271[details]
Leerssen, P. (Author). (2021). Platform research access in Article 31 of the Digital Services Act: Sword without a shield?. Web publication/site, Verfassungsblog. https://doi.org/10.17176/20210907-214355-0[details]
Heldt, A. (Author), Kettemann, M. C. (Author), & Leerssen, P. (Author). (2020). The Sorrows of Scraping for Science: Why Platforms Struggle with Ensuring Data Access for Academics. Web publication/site, Verfassungsblog. https://doi.org/10.17176/20201130-220222-0[details]
Leerssen, P. (2020). [Review of: D. Erdos (2019) European Data Protection Regulation, Journalism, and Traditional Publishers: Balancing on a Tightrope?]. European Data Protection Law Review, 6(1), 158-160. https://doi.org/10.21552/edpl/2020/1/22[details]
Tworek, H., & Leerssen, P. (2019). An Analysis of Germany's NetzDG Law. Transatlantic High Level Working Group on Content Moderation Online and Freedom of Expression. [details]
Angelopoulos, C., Brody, A., Hins, W., Hugenholtz, B., Leerssen, P., Margoni, T., ... van Hoboken, J. (2015). Study of fundamental rights limitations for online enforcement through self-regulation. Amsterdam: Institute for Information Law (IViR). [details]
van Eechoud, M., van Velze, S., Caspers, M., Eskens, S. J., Leerssen, P., Austere, L., Broomfield, H., De Terwanghe, C., Ellis, J., Hittmar, G., Morando, F., Lubarda, M., van Loenen, B., Sappa, C., & de Vries, M. (2014). D2.2: Position paper access to data. LAPSI 2.0 Thematic Network. https://ec.europa.eu/digital-agenda/en/news/lapsi-position-paper-access-data[details]
Leerssen, P. J. (2022). Computerrecht 2022/97. 97. Case note on: Rechtbank Noord-Holland, 6/10/21, ECLI:NL:RBNHO:2021:8539 (Kamerlid/LinkedIn Ierland en Linkedin Nederland). Computerrecht, (3), 228-230.
van Hoboken, J. V. J., Appelman, N. M. I. D., Fahy, R. F., Leerssen, P. J., McGonagle, T., van Eijk, N. A. N. M., & Helberger, N. (2019). Het juridisch kader voor de verspreiding van desinformatie via internetdiensten en de regulering van politieke advertenties. https://www.ivir.nl/publicaties/download/Rapport_desinformatie_december2019.pdf
van Hoboken, J. V. J., Appelman, N. M. I. D., Fahy, R. F., Leerssen, P. J., McGonagle, T., van Eijk, N. A. N. M., & Helberger, N. (2019). The legal framework on the dissemination of disinformation through Internet services and the regulation of political advertising. https://www.ivir.nl/publicaties/download/Report_Disinformation_Dec2019-1.pdf
Leerssen, P., Maalderink, R., & McGonagle, T. (2016). Compilation of selected best practices for the implementation of Recommendation CM/Rec(2016)4 & Proposals for further follow-up activities: Council of Europe Steering Committee on Media and Information Society Workshop : How to protect journalists and other media actors in Europe: implementing the Council of Europe's standards : Strasbourg, 30 June 2016. IViR. https://rm.coe.int/selected-best-practices-for-implementation-of-cm-rec-2016-4/1680726c3b[details]
Leerssen, P. (15-06-2022). The Tricky Business of Elon Musk Getting Twitter Fire-Hose Access [Web] Wired Magazine. The Tricky Business of Elon Musk Getting Twitter Fire-Hose Access. https://www.wired.co.uk/article/elon-musk-twitter-firehose
Leerssen, P. (speaker) (13-6-2022). Transparency in the Digital Services Act, European Media Lawyer's Conference 2022.
Leerssen, P. (speaker) (29-5-2022). An End To Shadow Banning? Transparency rights in the Digital Services Act between content moderation and curation, the 72nd annual conference of the International Communication Association (ICA), 26-30 May 2022, Paris, France.
Leerssen, P. (speaker) (20-5-2022). News from the ad archive: how journalists use the Facebook Ad Library to hold online advertising accountable, Global Conference on Transparency Research, Copenhagen.
Leerssen, P. (speaker) (11-5-2022). An end to shadow banning? Transparency rights in the Digital Services Act between contet moderation and curation, DIMACS Workshop on Computer Science & Law.
Leerssen, P. (speaker) (13-12-2021). Intermediary Liability & Platform Responsibility, University of Utrecht.
Leerssen, P. (speaker) (8-12-2021). Shadow banning, downranking and other secret sanctions: on the transparency of non-takedown content moderation., Digital Legal Talks.
Leerssen, P. (speaker) (26-11-2021). Workshop on DSA and fundamental rights, EuroISPA.
Leerssen, P. (speaker) (15-10-2021). Adhoc DSA/DMA Working Group on "must carry obligations" of editorial content, European Parliament, Greens/EFA.
Leerssen, P. (speaker) (22-9-2021). News from the ad archive: on journalistic usage of the Facebook Ad Library, Future of Journalism Conference.
Leerssen, P. (speaker) (7-9-2021). The Soap Box as a Black Box: Regulating Transparency in Social Media Recommender systems, ECREA 2021.
Leerssen, P. (speaker) (1-9-2021). Regulation of and by recommender systems, Bilgi IT Law Institute International Summer School on AI.
Leerssen, P. (speaker) (24-6-2021). Transparency in ranking algorithms and recommender systems, Center for Democracy and Technology (CDT) Lunch Talk Series.
Leerssen, P. (speaker) (22-6-2021). Safeguards for freedom of expression in the regulation of algorithmic ranking and recommendations, Parliamentary Assembly of the Council of Europe, Committee on Culture, Science, Education and Media.
Leerssen, P. (speaker) (25-3-2021). News from the ad archive: on journalistic usage of the Facebook Ad Library, First Annual Conference of a Platform Governance Research Network .
Leerssen, P. (invited speaker), Appelman, N. (invited speaker) & Sax, M. (speaker) (17-12-2020). Platform Monopolies, Conglomerates and The Digital Markets Act, PEPTalk #1: Big Tech Platform Power Regulation .
Leerssen, P. (speaker) (2-12-2020). News from the archive: an empirical study of ad archive journalism, Digital Legal Talks.
Leerssen, P. (speaker) (26-11-2020). The Soap Box as a Black Box: Regulating Transparency in Social Media Recommender Systems, VSNU Digital Society Conference 2019.
Leerssen, P. (speaker) (5-11-2020). IGF Glossary Project: defining platform governance, Internet Governance Forum (IGF) 2020.
Leerssen, P. (speaker) (20-4-2020). The Soap Box as a Black Box: Regulating Transparency in Social Media Recommender Systems, At the Crossroads: Towards a new European Communication Framework?.
Leerssen, P. (speaker) (2-2-2020). The Soap Box as a Black Box: Regulating Transparency in Social Media Recommender Systems, Leuven AI Law & Ethics Conference.
Leerssen, P. (speaker) (18-10-2019). Platform ad archives: promises and pitfalls, European Advisory Group of Social Science One Workshop: Removing Barriers to Digital Platform Transparency across Europe.
Andere
Ausloos, J. (organiser), Leerssen, P. (organiser) & van Drunen, M. (organiser) (15-3-2023). Researcher Access in the Digital Services Act, Amsterdam (organising a conference, workshop, ...).
Noroozian, A. (organiser) & Leerssen, P. (organiser) (22-11-2021). Roundtable on Platform Transparency, Accountability, and Auditing. Roundtable on Platform Transparency, Accountability, and Auditing (organising a conference, workshop, ...).
Leerssen, P. (participant) (1-6-2021). Hertie School Workshop on Detecting Digital Market Dominance (participating in a conference, workshop, ...).
Leerssen, P. (participant) (11-5-2021). Ada Lovelace Institute Workshop on the UK AI Strategy. Ada Lovelace Institute Workshop on the UK AI Strategy (11 May 2021) (participating in a conference, workshop, ...).
Leerssen, P. (participant) (14-4-2021). Organization for Security and Co-operation in Europe (OSCE) Expert Workshop on Hate Speech (participating in a conference, workshop, ...).
Leerssen, P. (participant) (31-3-2021). European Commission Stakeholder Workshop on transparency in sponsored political content. (participating in a conference, workshop, ...).
Leerssen, P. (organiser) (29-1-2021). Computers, Privacy and Data Protection Conference. Panel: Towards Research Access for Platform Data. (organising a conference, workshop, ...).
Leerssen, P. (participant) (29-6-2020). CEU Webinar on Free vs Protected Information (participating in a conference, workshop, ...).
Leerssen, P. (participant) (16-6-2020). Humboldt Institute on Workshop on Empirical Approaches in Platform Governance Research. Humboldt Institute Workshop on Empirical Approaches in Platform Governance Research (participating in a conference, workshop, ...).
Leerssen, P. (chair) (27-5-2020). AlgorithmWatch Governing Platforms Project Online Stakeholder Dialogue (organising a conference, workshop, ...).
Leerssen, P. (participant) (7-11-2019). Helsinki Committee Roundtable on privacy and political advertising. Helsinki Committee Roundtable on privacy and political advertising (participating in a conference, workshop, ...).
2023
Leerssen, P. (2023). Seeing what others are seeing: Studies in the regulation of transparency for social media recommender systems. [Thesis, fully internal, Universiteit van Amsterdam]. [details]
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