Hello 📖

I am a fourth-year PhD candidate in Empirical Legal Studies and Data Protection Law at Erasmus School of Law. My research explores the extent to which EU data protection law is able to curb the platform power of mobile platforms, with a special focus on the role of app stores and mobile operating systems. In my research, I am combining both doctrinal (legal) methods with empirical insights - to see an example, check out my latest publication. In January and February 2025 I was a Visiting Research Fellow at Weizenbaum Institut.

Before starting my PhD, I gained experience in platform regulation through internships at the Monopolies Commission and the Bundeskartellamt (German Competition Authority). Additionally, I developed skills in empirical methods and programming during my time as a research assistant at the ZEW (Leibniz Centre for European Economic Research).

Publications

Peer-reviewed articles

• Krämer, J. (2024). The death of privacy policies: How app stores shape GDPR compliance of apps. Internet Policy Review, 13(2). https://doi.org/10.14763/2024.2.1757

Books

• Prifti, Kostina, Esra Demir, Julia Krämer, Klaus Heine, and Evert Stamhuis, (eds.) Digital Governance: Confronting the Challenges Posed by Artificial Intelligence. 1st ed. The Hague: T.M.C. Asser Press, Forthcoming December 2024.

Working Papers & Work in Progress

• Word-level Annotation of GDPR Transparency Compliance in Privacy Policies using Large Language Models - led by Thomas Cory
• Effective Regulation and Firm Compliance: The Case of German Privacy Policies, NBER Working Paper No. 32913 - together with Bernhard Ganglmair and Jacopo Gambato
• Regulatory Compliance with Limited Enforceability: Evidence from Privacy Policies - together with Bernhard Ganglmair and Jacopo Gambato (see latest version here)
• Balancing Privacy and Platform Power in the Mobile Ecosystem: The Case of Apple’s App Tracking Transparency
• The Disparity between Privacy Prefences and Cookie „Choice“ - together with Alexander Egberts

Presentations

• 7 March 2025: SSH Breed Conference, "Running on Data: The App Store Governance of mHealth apps", Rotterdam.
• 11 February 2025: Fellow Talk at Weizenbaum Institut, "Running on Data: The App Store Governance of mHealth apps", Berlin.
• 9 December 2024: Workshop: The Epistemology of AI, "The EU approach to regulating misinformation in LLMs", Rotterdam.
• 28 November 2024: Digital Legal Talks 2024, "Running on Data: The App Store Governance of mHealth apps", Utrecht.
• 10 September 2024: Weizenbaum Institute Workshop Digital Decade: How the EU shapes digitalisation research, "Data Protection Law in Action: Introducing the GDPR", Berlin.
• 21 June 2024: eLaw Conference, "Balancing Privacy and Platform Power in the Mobile Ecosystem", Leiden.
• 22 May 2024: CPDP.ai 2024, " Balancing Privacy and Platform Power in the Mobile Ecosystem", Brussels.
• 26 September 2023: ESELS Conference 2023, "The Death of Privacy Policies: How App Stores Shape GDPR Compliance of Apps", Warsaw.
• 15 September 2023: Digital Legal Talks 2023, "The Death of Privacy Policies: How App Stores Shape GDPR Compliance of Apps", Utrecht.
• 25 August 2023: SIOE 2023, "Regulatory Compliance with Limited Enforceability: Evidence from Privacy Policies", Frankfurt am Main.
• 26 May 2023: CPDP 2023, "The Death of Privacy Policies: How App Stores Shape GDPR Compliance of Apps", Brussels. Available online
• 3 April 2023: 5th Monash-Warwick-Zurich Text-As-Data Workshop, "Readability and Disclosure in Privacy Policies", held online.
• 7 July 2022: GLEA 2022, "Economics of Readability: Privacy Policies and the GDPR", Nancy (held online).

Other Activities

• September 2024: Member of the Program commitee of the Symposium on Scaling AI Assessments
• 8 - 9 June 2023: Organization of the Law, AI and Regulation conference, together with Kostina Prifti and Esra Demir
• August 2023 - August 2024: Chair of the PhD in Law Association Rotterdam (PILAR)
• December 2023: Guest in Judith Blijden's Podcast The Digital Period in which I talk about how period apps track and use data. Click here to listen to the episode!

Contact details

Email	j.k.kramer@law.eur.nl
Office address	L7-13 Erasmus School of Law Burg. Oudlaan 50 3062 PA Rotterdam The Netherlands

Last updated: March 2025

© 2025. All rights reserved.