The European Investigative Journalism Conference

Slides and presentations – Dataharvest 2025

Aleksa Tešić: Find the spy tech: How to Spot Invasive Technologies in Public Procurement

Alex Ștefănescu, Simon Wörpel: Harnessing the power of OpenAleph: a look at its new features and how to use them to find the data you’re looking for

Alex Ștefănescu: How to reveal metadata and other hidden information in PDF documents&AI powered search through audio and video (part of “Skill take away – come and learn four skills/tools in one session”)

Alex Ștefănescu, Friedrich Lindenberg, Simon Wörpel: The Investigative Commons – how to share structured data, document collections and build knowledge collaboratively

Federico Acosta Rainis, Fernanda Buffa, Kuang Keng Kuek Ser: Masterclass: Spatial analysis with QGIS

Federico Acosta Rainis: How to create compelling before-and-after visualizations of satellite images using free tools (“Skill take away – come and learn four skills/tools in one session”)

Fernanda Buffa, Gustavo Faleiros, Kuang Keng Kuek Ser: How to track supply chains and money flows in Europe that contribute to environmental destruction in the Global South

Jean Comte, Pascal Hansens: Welcome to the Brussels bubble: tips on how to investigate the EU

Joseph Smith, Alina Yanchur: Spreadsheets with superpowers: LLMs for data extraction and classification

Karrie Kahoe: Uncovering court records – a beginners guide to hunting for legal data

Karina Shedrofsky, Jan Strozyk, Alex Ștefănescu, Simon Wörpel: Investigative Tools for the Commons: DARC, OpenAleph, and the Case for a Shared Data Library

Kuang Keng Kuek Ser, Federico Acosta Rainis: Beyond the pixels: the power of raster data in QGIS

Liubov Velychko: Investigating climate disinformation: methods for exposing fossil fuel industry influence on policy

Marcella Via: Investigating EU lobbying (part of “Investigating corporate lobbying – Tips and tools session”)

Nina Holland, Olivier Hoedeman: The EU deregulation wave and the corporate agenda – tips and stories to investigate