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Friday, May 29
 

9:00am CEST

Check-in and Coffee
Friday May 29, 2026 9:00am - 10:00am CEST
Register for the conference, pick your name tag, and get a coffee or tea in the mediaforum (ground floor, behind the check-in desk)
Friday May 29, 2026 9:00am - 10:00am CEST
Mediaforum

10:00am CEST

Opening of the conference
Friday May 29, 2026 10:00am - 10:30am CEST
The opening of the conference will take place in the Aula Hanswijk (Z1.13, on the first floor), and will be streamed into the Aula Donche (Z1.15, first floor).
Friday May 29, 2026 10:00am - 10:30am CEST
Z1.13 - Aula Hanswijk

10:30am CEST

Networking welcome
Friday May 29, 2026 10:30am - 11:30am CEST
Networking will take place all over the building. To join a group, please attend the opening of the conference. Don't worry & don't be shy, we make it very lowkey.
Friday May 29, 2026 10:30am - 11:30am CEST
Mediaforum

11:30am CEST

Investigating CO2 emissions fraud by reverse-engineering publicly reported data
Friday May 29, 2026 11:30am - 12:45pm CEST
This session will introduce the regulatory framework of the EU emission trading systems (EU ETS) and its potentially serious shortcomings. Participants will learn the basics of anomaly analysis and how to reverse-engineer CO2 ‘emission factors’ from various European public databases. The speakers will also explore other potential investigation pathways based on their learnings - including identifying suspicious verifiers, finding expert sources, and using environmental FOIs to obtain company emission reports.

The basis of this panel is a series of investigations published between 2021 and 2025 by OCCRP, IRPI, Investigace.cz, and RISE Project. To learn more, you can go here: https://www.journalismfund.eu/carbon-deceit-ets 
Speakers
avatar for Leopold Salzenstein

Leopold Salzenstein

Data coordinator, Arena for Journalism in Europe
Leopold Salzenstein is a freelance investigative data journalist and trainer based in the south of France. At Arena, he coordinates the handling of data for publications and trainings. He is also a member of the collective of journalists Environmental Investigative Forum (EIF).

... Read More →
EM

Eli Moskowitz

Environmental Editor, OCCRP
Friday May 29, 2026 11:30am - 12:45pm CEST
2.02

11:30am CEST

Networking session: Reporting on animal rights and welfare
Friday May 29, 2026 11:30am - 12:45pm CEST
TBC
Speakers
avatar for Tracy Keeling

Tracy Keeling

Freelance Environmental Journalist
I am a UK-based journalist who writes about a variety of environmental subjects but specialises in biodiversity reporting, particularly in relation to the wildlife trade. My work has been published in Bloomberg Businessweek, The Bureau of Investigative Journalism, The Revelator, Yahoo... Read More →
avatar for Annick Hus

Annick Hus

Journalist and Researcher, Freelance
I’m a journalist and researcher specialising in biodiversity, wildlife, ecosystem health, livestock farming, and animal welfare. My work has been published in outlets including Apache, De Groene Amsterdammer, The Green European Journal, Falter, Follow the Money, and EOS. I’m available... Read More →
Friday May 29, 2026 11:30am - 12:45pm CEST
Z2.01 - Mediadrôme

11:30am CEST

Oh wow, that has changed! – Creating powerful climate stories from old guide books
Friday May 29, 2026 11:30am - 12:45pm CEST
Comparing the size of glacier 100 years ago to today is a strong message on the impact of climate change without many words. This idea – to visualize gradual changes by contrasting the world some decades ago with today – can be a powerful way to engage new audiences for climate stories. Sources for this kind of structural analysis are often available but untapped: Old guide books, maps and other materials existing only in print.

Through an example on the industrialization of ski resorts, we will show how old guide books and other analog materials can be a treasure trove for climate journalists and how they can use it efficiently, even if the amount of paper seems intimidating.

In the session we will discuss potential story leads and which guide books (or similar) to look out for. In the second part, we will discuss strategies and tools to extract information and organize data, and tools that might be useful for extraction. We will also demonstrate how AI tools might help, where manual work is needed and which non-AI tools might speed up the work, even if you don’t consider yourself a data journalist.
Speakers
avatar for Constanze Bayer

Constanze Bayer

Datenjournalistin, BR Data
Constanze arbeitet als Datenjournalistin mit an Geschichten rund um Klima und Umwelt. Das können große Storytelling-Projekte wie "Schnee war gestern" zur Zukunft des Schnees in den Alpen oder ein "CO2-Rechner" sein, der die Wirkung von Heizungsgesetz und Co illustriert, aber auch... Read More →
avatar for Julia Barthel

Julia Barthel

Datenjournalistin, BR Data
Julia arbeitet als Daten- und Investigativjournalistin für BR Data. Dabei verbindet sie datengetriebene Recherchemethoden mit crossmedialer Berichterstattung in Audio, Video und Text. Das heißt auch: Der beste Radiobeitrag entsteht mit einem Bild im Kopf.
Friday May 29, 2026 11:30am - 12:45pm CEST
3.09

11:30am CEST

Build web scrapers with AI for non-coding journalists
Friday May 29, 2026 11:30am - 12:45pm CEST
Scraping data from the Internet has become a key skill for many investigations and reporting projects that rely on data. Building custom web scrapers used to require solid coding skills but in two recent environmental investigations supported by the Pulitzer Center, we used Large Language Models (LLMs) like ChatGPT, Google Gemini, or Claude to help us build scrapers for online content without much coding skills. This hands-on workshop will teach you how to inspect a website and choose a scraping strategy. Then it will demonstrate, step-by-step, how to build web scrapers that have been used in the investigations. LLM prompts will be shared and participants can follow along to create their first custom web scraper.

After attending you will understand website structure for scraping and be able to use LLMs to build basic web scrapers.

Participants should come with their own laptops, register a free account on any of the main LLMs (e.g. ChatGPT, Google Gemini, Claude) and have a free Google Colab account at colab.research.google.com.

No coding skill is required but basic familiarity with LLMs is recommended.
Speakers
avatar for Kuang Keng Kuek Ser

Kuang Keng Kuek Ser

Senior Editor for Rainforest Investigations, Pulitzer Center
Kuang Keng Kuek Ser is the Senior Editor for Rainforest Investigations at the Pulitzer Center, a non-profit organization based in Washington, DC that supports independent journalists globally. He supports and mentors three fellowships investigating issues related to tropical rainforest... Read More →
avatar for Anastasiia Morozova

Anastasiia Morozova

Data and investigative journalist, Onet.pl/Ringier Axel Springer
I’m a data and investigative journalist with a background in tracking Russian influence, desinformation operations and sanctions evasion in Europe. I’m especially interested in projects where I can combine data analysis and visual storytelling to expose hidden networks or financial... Read More →
Friday May 29, 2026 11:30am - 12:45pm CEST
3.02

11:30am CEST

How to extract Persons, Names and Locations from research material – and where AI fails to do it
Friday May 29, 2026 11:30am - 12:45pm CEST
Processing natural language is seen as the task that artificial intelligence is most adept at. However, as journalists and researchers, we need our technologies to be explainable, understandable, and deterministic. Because of this, not all artificial intelligence algorithms are well-suited for our work. And, when every company promises that their AI software is extraordinary, it's difficult to distinguish the empty promises from what the technology can actually do. Working on OpenAleph, an open-source tool for investigative journalism, has taught us a lot about processing natural language. We extract names of people and companies from raw text. We try to infer the language a text is written in. The names of places, cities, and countries are crucial to us, in order to situate data geographically. All of this is heavily reliant on algorithms. But not all algorithms are as good as getting us what we want!

In this session, we'll show you what works and what doesn't. Everything we demonstrate can be used independently of OpenAleph, and integrated into your own workflows. Some machine learning algorithms are excellent at getting us more insights from our data. In addition to this, data that we already have, or public data, can be harnessed to help us identify names of people and places, just based on similarity - no AI required!

Finally, we'll discuss how these approaches compare to using large language models and generative AI. This session is half teaching and discussing common solutions, half workshop. For the workshop part, bring a laptop running Python if possible.
Speakers
avatar for Simon Wörpel

Simon Wörpel

Director of Technology, Data and Research Center – DARC

avatar for Natalie Widmann

Natalie Widmann

Data Journalist, SWR Data Lab
I'm a Data Journalist supporting journalist and human rights activists with data, tools and automation.
I'm happy to talk about scraping data, extracting the most relevant information from it, understanding algorithms and using them for investigations.
Friday May 29, 2026 11:30am - 12:45pm CEST
3.13

11:30am CEST

Your first investigative data pipeline with agentic AI
Friday May 29, 2026 11:30am - 12:45pm CEST
Every investigative journalist has faced the same bottleneck. What would I find if I could check all of them: all the company registrations, all the addresses, all the permits? Until recently, answering that question required weeks of scripting. In this session, we introduce a faster way: directing an AI coding agent to build investigative data pipelines on demand. Participants will direct an agent to pull data from a public source, clean it, and turn it into an interactive visualization, all without writing code manually. The approach is applicable to a range of investigative beats, from financial crime and corruption to environmental accountability and lobbying networks.

To follow along, participants should have a basic understanding of web technologies, but no programming experience is needed. After attending this session, participants will be able to direct an AI coding agent to build a data pipeline, from raw data to interactive visualization, and apply this methodology to their own investigative questions. Participants should have a laptop with a modern web browser. We will provide API keys and access credentials during the session. Detailed setup instructions will be shared via a GitHub repository before the workshop.
Speakers
avatar for Jeremy Crowlesmith

Jeremy Crowlesmith

Data journalist / AI specialist, KRO-NCRV
hi, i'm jeremy. i build tools and tell stories with data. from scraping to analysis to visualization — the whole stack. i have twenty years of building for the web. now i'm focused on investigative data journalism: using code to find stories hidden in documents and datasets. - based... Read More →
avatar for Jan van der Burgt

Jan van der Burgt

Investigative coder / AI specialist, Freelance / Open State Foundation
I leverage AI technologies to collect and analyse data at scale, uncovering the hidden patterns that build stories.

Investigative focus: lobbying, government overreach, migration, global food supply chains.
Friday May 29, 2026 11:30am - 12:45pm CEST
3.05

11:30am CEST

How to budget (almost) anything
Friday May 29, 2026 11:30am - 12:45pm CEST
In this session, we'll cover budgets in all shapes and sizes — including investigation budgets, project grants, EU grants, and organisational budgets as a whole. We'll provide you with tools to translate your ideas into budgets to present to donors, and to explore different financial scenarios. We will also discuss how to improve your financial reporting and what you need to know about financial statements. We'll look at how to budget for your organisation when there is little core funding and lots of project funding, mistakes to avoid, and how to juggle reporting needs. This aims to be a candid, hands-on session where we can help each other and learn together — so be ready to bring your questions and ideas!
Speakers
avatar for Anuška Delić

Anuška Delić

Founder and Editor in Chief, Oštro
Based in Slovenia, Anuška Delić is an investigative and data journalist. In 2018, she established Oštro, a non-profit center for investigative journalism in the Adriatic region. In 2021, Oštro established a sister center in Croatia, effectively creating a unique two-headed micro-regional... Read More →
avatar for Cora Moyano

Cora Moyano

Finance Manager, Arena for Journalism in Europe
Happy to share and learn about finance, business models, fundraising, processes, systems, and transparency in nonprofits. It doesn't need to be boring or terribly serious ;)

Friday May 29, 2026 11:30am - 12:45pm CEST
2.04

11:30am CEST

Israel Files: Inside a legal war machine of impunity
Friday May 29, 2026 11:30am - 12:45pm CEST
A leak of several million emails from the Israeli Ministry of Justice revealed a long-running lawfare operation aimed at shielding Israeli policies toward Palestinians from legal scrutiny in international and European courts, while also seeking to criminalize protest and advocacy against Israeli human rights violations. Spanning nearly 15 years and involving more than a dozen European countries, the emails are written mainly in Hebrew and show how several European countries collaborated with Israel to ensure impunity for its illegal occupation, paving the way to future war crimes. Media in Israel-Palestine are barred from reporting on the leak due to a gag order, making international collaboration essential. The leaked collection of MoJ documents have been indexed and made searchable for the public in the Library of Leaks by the nonprofit whistleblower site Distributed Denial of Secrets (DDoS).

This session presents how an independent journalist, working with European Investigative Collaborations (EIC) and multiple European newsrooms, analysed and reported on the leak using straightforward, accessible methods. The investigation relied primarily on close reading, systematic memo-writing, manual timeline construction, and country-by-country mapping of key actors and legal strategies, complemented by cross-referencing the emails with publicly available records.

The talk will share practical lessons on making sense of large email leaks in multilingual contexts, combining leaked material with open-source and public-domain data, coordinating cross-border reporting under legal constraints, and maintaining accuracy through repeated verification and collaborative review.
Moderators
avatar for Stefan Candea

Stefan Candea

co-founder, coordinator, European Investigative Collaborations | IC3
Currently I am the coordinator of the EIC network and teach at the University of Coimbra an investigative clinic.

My work started with covering organized crime across borders in România at the end of the 90’s. Mid 2015 I co-founded EIC as a network_by_agreement between media or... Read More →
Speakers
Friday May 29, 2026 11:30am - 12:45pm CEST
1.16

11:30am CEST

A method for investigating private equity-backed companies at a large scale
Friday May 29, 2026 11:30am - 12:45pm CEST
Over the past three years, the Guardian Data Projects team has revealed how private equity firms have increased their share in the childcare sector as well as in the provision of children’s care homes in England. We have also investigated how taxpayers’ money for services that provide support for rape and sexual assault victims ends up in private equity companies. And we have estimated that the UK government has spent billions of pounds in companies that are owned by a private equity group.

Attendees to this session will learn about two methodologies the Guardian built to track down the involvement of private equity firms in the country’s economy and specific sectors. They will also learn about specific resources to find out company data, as well as understand how the Guardian built an automated system to analyse thousands of company records to find the ultimate controlling party for each company group. We will also show how an LLM helped to identify companies owned by a private equity firm, as well as the limitations of using this type of technique.
Speakers
avatar for Zeke Hunter-Green

Zeke Hunter-Green

Software Developer, The Guardian
Zeke is a Senior Software Engineer on the Guardian’s Digital Investigations team. The team contributes to journalistic research and builds secure tools to enable investigative journalism.

avatar for Carmen Aguilar Garcia

Carmen Aguilar Garcia

Data Journalist, The Guardian
Data journalist at The Guardian Data Project team. I work on a variety of subjects - always finding the data angle in every story. Scraping, cleaning, data analysis, but above all JOURNALISM!
Friday May 29, 2026 11:30am - 12:45pm CEST
Z1.13 - Aula Hanswijk

11:30am CEST

OSINT 101: The latest tools, tricks & tactics
Friday May 29, 2026 11:30am - 12:45pm CEST
Drawing on real cross-border investigations from OCCRP's Research & Data team, this session will share the tools, techniques, and workflows the team relies on daily to support hundreds of journalists around the world. From geolocating images and tracking assets to social media investigations and smart browser hacks, this session will offer a practical, field-tested OSINT toolkit.

With shrinking newsroom budgets and a constant stream of "must-have" tools, it's harder than ever for journalists to know what OSINT tools might actually be worth using or paying for. This session cuts through the noise and focuses on what works right now.

Whether conference attendees are new to open-source research or looking for a sharp refresher, they will leave with concrete skills, trusted tools, and time-saving methods they can immediately apply to their own investigations.
Speakers
avatar for Shaya Laughlin

Shaya Laughlin

Research Director, OCCRP
Friday May 29, 2026 11:30am - 12:45pm CEST
Z1.15 - Aula Donche

11:30am CEST

How we built Europe's most comprehensive arms export database - and how you too can find stories in there
Friday May 29, 2026 11:30am - 12:45pm CEST
In 2014, we decided to request a comprehensive dataset from the Swiss state: We asked for a detailed overview of all granted export licenses of arms and military goods. Over ten years later, we run the most comprehensive arms exports database in a European country based on the documents received: www.rüstungsreport.ch. In our workshop, we take participants on a journey of investigative research, legal struggles, methods, and outcomes.

We'll explain how we managed to create a database of all arms export licenses obtained for armaments and surveillance equipment from Swiss-based companies around the world. We'll take you through a lengthy access process via freedom of information requests. The information was obtained only after a long legal battle against the Swiss state, which we won before the highest Swiss court. We'll also show how we built a database, organised the data, and how this became a tool of transparency, as we kept requesting the data and updating the database every year. Finally, we will showcase stories that came out of the database, uncovering critical company deals and state practices, and their potential for cross-border stories. We'll guide the participants through our investigations into the use of PC-12 from the company Pilatus in the US war in Afghanistan. And how the toothless Swiss export controls in the dual-use sector, coupled with the strong lobbying of the arms industry, made it possible for the Russian war machine to rely on Swiss high-tech.

This session will enable the participants to adapt our methodology to their countries of interest and give them ideas for further investigations into the defence industry. We will hand out a reader with the most important learnings and a template of the freedom of information request we made.
Speakers
avatar for Lorenz Naegeli

Lorenz Naegeli

WAV research collective
Investigative Journalist, Zurich, Switzerland. With the WAV research collective (www.wav.info).

Previously involved in large-scale collaborative research projects, such as the «Rüstungsreport» and the «Predator Files» or the recently published investigation on Palantir in Swi... Read More →
Friday May 29, 2026 11:30am - 12:45pm CEST
3.04

11:30am CEST

Upholding transparency – the right to access EU documents in practice
Friday May 29, 2026 11:30am - 12:45pm CEST
The European Union promises openness in its decision-making. But, despite this commitment, the European Commission and the Member States recently blocked transparency around key decisions on public spending and legislative proposals. Moreover, the Commission tightened its internal rules to limit freedom of information. These obstacles to transparency have hampered reporting on how the EU spent billions of euros of its post-COVID recovery fund and military aid for Ukraine.

The official veil of secrecy also restricts investigations into topics such as the EU's fight against Big Tech, the rollback of environmental laws, or human rights violations at the EU's external borders.

How can journalists push back against this reduction in transparency? This panel will discuss the mounting challenges for journalists covering the European Union, and how to fight back against the rising tide of opaqueness.
Speakers
avatar for Alexander  Fanta

Alexander Fanta

Journalist, Follow the Money
Journalist bei Follow the Money mit Fokus auf EU-Digitalpolitik. Davor Stationen bei netzpolitik.org, Austria Presse Agentur und Der Standard.
avatar for Teresa Anjinho

Teresa Anjinho

European Ombudsman
Teresa Anjinho was sworn in as European Ombudsman on 27 February 2025, following her election by the European Parliament in December 2024. As European Ombudsman, she is responsible for investigating maladministration within the institutions, bodies, offices, and agencies of the European... Read More →
Friday May 29, 2026 11:30am - 12:45pm CEST
1.04

11:30am CEST

Is there anybody listening? Creative formats to reach wider audiences
Friday May 29, 2026 11:30am - 12:45pm CEST
Research shows that, among audiences in Western countries, news avoidance has been growing nonstop for the last decade. The result? Sometimes, it feels that the main audience of our investigations is... other investigative journalists. While experts do use our research, it seems that we are failing to reach generalist audiences and the wider public.
One possibility to reach more diverse audiences is to present and disseminate our investigations in unconventional ways.

In this session, we will talk about using creative formats to publish investigative journalism: from unusual digital publications to printed and material objects, and live and in-person activities.

Come to this session to discover different creative formats and real examples of investigations that used them, as well as the lessons learnt. We will also present an online catalogue of creative formats, and show how editors and journalists can use it in their work.
Speakers
avatar for Jose Miguel Calatayud

Jose Miguel Calatayud

Freelance journalist and writer
I am a freelance journalist and writer based in Valencia, in Spain, focusing on feature writing and investigative journalism, mainly about Europe. As of March 2026, I am doing preliminary research and planning collaborative investigations into corporate influence, climate adaptation... Read More →
Friday May 29, 2026 11:30am - 12:45pm CEST
2.03

12:45pm CEST

Lunch
Friday May 29, 2026 12:45pm - 2:00pm CEST
Lunch is served in Mediaforum on the ground floor (lobby area), and on the first floor (Z1.06 and Z1.07). Vegan food and special meals (gluten-free, dairy-free, and all allergies and special dietary requirements) are available on the first floor only.


Friday May 29, 2026 12:45pm - 2:00pm CEST
Mediaforum

2:00pm CEST

Dirty shipping: How we investigated maritime pollution
Friday May 29, 2026 2:00pm - 3:15pm CEST
This session will focus on one of the most underreported actors in climate reporting: the billion-dollar shipping industry. We bring together two investigations into pollution from shipping to show how journalists can follow the environmental harm caused by this global industry.

From illegal fuel practices in the North Sea to the hidden ecological costs of scrubber systems in the Mediterranean, the session will focus on how maritime pollution remains largely unpunished and how the industry keeps on avoiding consequences. The journalists will walk you through their methodologies; combining OSINT, data journalism, and FOIA requests with scientific research and regulatory analysis. They will show you how to track emissions, identify regulatory loopholes, and connect datasets.

The session also offers practical insights into building cross-border environmental investigations, working with technical data, and collaborating with scientists to uncover complex pollution systems. The journalists will discuss how a holistic approach —following pollutants across sectors and geographies— can reveal accountability gaps and expose the true environmental cost of global shipping.
Speakers
avatar for Gaëtan Gras

Gaëtan Gras

Lecturer/ Investigative Journalist (datajournalism - Osint - Fact checking), IHECS
Friday May 29, 2026 2:00pm - 3:15pm CEST
2.03

2:00pm CEST

Investigating illicit fishing in the Mediterranean through open data
Friday May 29, 2026 2:00pm - 3:15pm CEST
Italian non-profit newsroom IRPI published a year-long investigation into the supply chain behind the famous red shrimp of Mazara del Vallo, which is a premium 'Made in Italy' seafood product concealing a trail of illicit practices that threaten both marine ecosystems and market transparency.

Red shrimp is harvested through deep-sea bottom trawling in the Central Mediterranean, where a huge regulatory gap between EU fleets and largely unsupervised North African vessels has created a hotspot for overfishing and illegal transshipments. The investigation documents how Italian operators source shrimp caught by non-EU vessels through informal and often illegal channels, using vessel tracking data, ownership structures, and Global Fishing Watch's open AIS database to identify suspicious transhipment operations and anomalous fishing patterns.

The session will walk journalists through the methods, datasets, and investigative approaches behind the story -from detecting AIS signal shutdowns to mapping opaque supply chains- offering replicable tools for reporting on illegal fishing and environmental crimes in the Mediterranean and beyond.
Speakers
avatar for Eleonora Vio

Eleonora Vio

Freelance Journalist
avatar for Carlotta Indiano

Carlotta Indiano

Investigative Reporter / Environment, IRPI Media
Carlotta Indiano is an Italian investigative journalist based in Rome.
She mainly works with IrpiMedia, Investigative Reporting Project Italy (IRPI), a centre for investigative journalism based in Italy. 
Carlotta studied International Cooperation and Development in Rome and Bue... Read More →
Friday May 29, 2026 2:00pm - 3:15pm CEST
Z0.15

2:00pm CEST

Inside the European Defence Fund: hidden decisions, weak ethics, and funding for an Israeli arms manufacturer
Friday May 29, 2026 2:00pm - 3:15pm CEST
This session will explain the methods behind an investigation into the European Defence Fund (EDF) that uncovered how structural weaknesses allowed Israel’s largest state-owned weapons manufacturer - directly involved in the war in Gaza- to receive millions in EU funding, despite rules meant to support only European companies. The reporters will explain how they identified relevant projects and traced the flow of funds.

They will break down our data work (scraping the tenders portal and building a dataset) and guide you through how the EDF policy works, its loopholes, legal framework, and how to work with the EU’s defence expenditure processes.

In today’s political environment of increasing militarisation, where a huge share of EU funding is directed toward defence, journalists need to learn how to access and analyse European public defence tender data, understand the EDF tendering and decision-making process, and see how European governments fund and benefit from defence projects.

This session will demonstrate how combining data work, investigative reporting, cross-border collaboration, and legal analysis can uncover hidden practices, reveal intentional gaps and inconsistencies that favour the arms industry over EU principles and international law.
Speakers
avatar for Maria Maggiore

Maria Maggiore

Investigate-Europe
avatar for Konstantina Maltepioti

Konstantina Maltepioti

Data Journalist, Reporters United
Konstantina Maltepioti is a data journalist at Reporters United, an independent network of investigative journalists based in Greece. Her work focuses on political corruption, environmental issues, and human rights. She specialises in open-source investigations, ship-tracking, scraping... Read More →
Friday May 29, 2026 2:00pm - 3:15pm CEST
Z0.10

2:00pm CEST

Using data to expose violations of transgender rights
Friday May 29, 2026 2:00pm - 3:15pm CEST
Reporting on transgender people can be a minefield: official data is scarce, public understanding is patchy, and with their rights increasingly contested by politicians and commentators, the community itself is often wary of journalists.

Drawing on Investigate Europe’s project The Cruel Condition -published with Arte, New Lines, Taz, and others- this session explores how laws across Europe pushed trans people toward sterilising surgeries over decades. It will outline how we compiled first-of-its-kind data to produce an unprecedented cross-border estimate, and share practical insights on building trust with trans sources.

We will also look at other investigations using data to cover LGBT issues (e.g., on money flows to conservative groups), a topic quite often overlooked by data journalists, to consider possible pathways for future investigations amid an intensifying backlash against LGBT rights in many parts of the world. We will look at other examples and invite you to discuss how to be creative with unusual, and sometimes even non-existent, datasets.
Speakers
Friday May 29, 2026 2:00pm - 3:15pm CEST
2.02

2:00pm CEST

Using LLMs in R to expand and categorise your datasets: the Ellmer package
Friday May 29, 2026 2:00pm - 3:15pm CEST
Large language models can do more than generate text – they can help clean and structure messy data files as well as enrich datasets. As LLMs increasingly become a useful tool for data journalists, the Ellmer package is a useful resource for R users to easily work with LLMs. The Guardian data team has used the Ellmer R package to clean and organise thousands of emails from the Epstein files, to investigate private equity firms in the United Kingdom, and to classify recipients of climate finance.

Using some of these examples, attendees will learn when this package can be the perfect tool for your investigation, which are the good practices when using LLMs, how to connect to an API of an LLM, how to write an efficient prompt, how to submit the prompts in bulk using the batch function for structured data and how to evaluate your results and iterate for improvements.

This is an advanced R session and we will assume that attendees have some prior knowledge of R.
Speakers
Friday May 29, 2026 2:00pm - 3:15pm CEST
1.04

2:00pm CEST

How to code anything
Friday May 29, 2026 2:00pm - 3:15pm CEST
Coding has long been a skill journalists wanted to learn to make their investigations more efficient and rigorous. The main barrier was the significant time investment required to develop that skill. But since large language models emerged, we no longer need to write code ourselves. We do, however, still need to make informed choices when instructing an LLM to write code for us. Otherwise, those choices get made for us by the model.

How do we instruct the LLM best? How can we understand a code? And how do we catch potential mistakes? No prior coding knowledge is required to attend this session. You'll learn a simple, systematic approach to conversations, context management, and effective prompting that will help you to code anything. The participants should have an account with a large language model provider (ChatGPT, Claude, Gemini or similar).
Speakers
avatar for Ada Homolova

Ada Homolova

ARENA, Austria/ Slovakia
Adriana is a freelance data journalist, trainer and public spending nerd. She coordinates the data skills training track on the Dataharvest conference, and herds frogs at The Pond.

https://homolova.sk/newsletter
avatar for Johan Schujit

Johan Schujit

Data Engineer, Resolve.
I'm a data engineer responsible for EveryPolitician and PoliLoom at OpenSanctions. I'm a self-taught hacker with a stubborn belief that good data should be open and technology should serve the public interest. Previously at Follow the Money.

Friday May 29, 2026 2:00pm - 3:15pm CEST
3.04

2:00pm CEST

Scraping the unscrapable: advanced approaches to deal with complex sites and evade anti-scraping systems
Friday May 29, 2026 2:00pm - 3:15pm CEST
Scraped data can often be the backbone of an investigation, but some websites are more difficult to scrape than others. This session will cover how to approach dealing with tricky sites, including coping with captchas, IP blocking, and browser fingerprinting. We'll cover how to figure out what might be preventing you from scraping a site, and what options you have to proceed, with their pros, cons, and costs.

This is an advanced session aimed at people who already have experience of writing code to scrape websites and want to move up to the next level: participants will leave with an understanding of how to deal with hard-to-scrape websites, plus the tradeoffs of different approaches. No tools are required to follow along, just a web browser.
Speakers
avatar for Max Harlow

Max Harlow

Bloomberg News
Max Harlow is a data reporter at Bloomberg News. He also runs Journocoders, a community group for journalists to develop technical skills for use in their reporting.
Friday May 29, 2026 2:00pm - 3:15pm CEST
3.02

2:00pm CEST

Using the cloud and local LLMs to rapidly analyse thousands of audio/text documents
Friday May 29, 2026 2:00pm - 3:15pm CEST
In this session, participants will take an archive of podcast episodes and other documents, and set up some cloud infrastructure to analyse the files using open source transcription, text extraction and generative AI tooling. The aim is to equip attendees with the skills to rapidly perform bulk operations on large troves of data by leveraging cloud platforms. By the end of the workshop participants will be have a pipeline that can answer questions like 'which podcast episodes have instances of greenwashing in them'. At The Guardian, we have used these techniques in two recent investigations. When investigating the Free Birth Society we needed to perform analysis on hundreds of hours of audio files. When the Epstein files were released we had to try and extract meaning out of millions of unstructured text documents. By making use of simple cloud tools (queues and instances) we were able to process hundreds of files in parallel whilst retaining control of the data.

Participants should have some experience of using the command line. All cloud accounts will be provided. After attending this session, participants will be able to use the cloud to quickly analyse large numbers of documents and media files. Participants using Windows could save some time by setting up WSL https://learn.microsoft.com/en-us/windows/wsl/install
Speakers
avatar for Philip McMahon

Philip McMahon

Software Developer, The Guardian

avatar for Teodora Curcic

Teodora Curcic

BBC
Teodora Ćurčić is an investigative and data journalist from Serbia with over seven years of experience reporting on corruption, political finance, gender-based violence, and social justice. She spent most of her career at the award-winning Center for Investigative Journalism of... Read More →
Friday May 29, 2026 2:00pm - 3:15pm CEST
3.05

2:00pm CEST

Finding the bad guys
Friday May 29, 2026 2:00pm - 3:15pm CEST
In almost all research, we need to uncover information about given individuals: criminals, extremists, corrupt public officials. This workshop focuses on identifying the players in a nasty game, as well as people who can provide valuable information as sources. It delves into investigating their social media accounts, their addresses, and their networks. Details they aim to keep hidden but often fail to.

We will provide strategies, tools and tricks for finding people online. What can email addresses, social media profiles and telephone numbers reveal about a person? How can data leaks, Google reviews, and even apps like Strava offer insights for research? And what do the deceased leave behind? We go beyond abstract methods and present real-world investigation cases: Learn how an investigation can start with nothing more than a name – and end with ringing someone’s doorbell.

The examples include investigations into neo-Nazis and other extremists, police officers and unpeaceful UN peacekeepers, criminal divers, and Secret Service agents kidnapping people.
Speakers
avatar for Sebastian Erb

Sebastian Erb

Reporter, Süddeutsche Zeitung
Sebastian Erb ist Redakteur im Investigativ-Ressort der Süddeutschen Zeitung in Berlin. Zuvor arbeitete er bei der taz. Er beschäftigt sich v.a. mit Themen der Inneren Sicherheit, insbesondere Rechtsextremismus und Spionage, aber auch mit MeToo und zuletzt dem internationalen Wildtierhandel... Read More →
Friday May 29, 2026 2:00pm - 3:15pm CEST
0.10

2:00pm CEST

Investigating sound: Where nobody looks, but everyone should listen
Friday May 29, 2026 2:00pm - 3:15pm CEST
Everyone listens to audio all the time, yet investigators rarely think of it. This session introduces audio forensics as an often-overlooked OSINT skill. We’ll explore how frequencies, compression, spectrograms, and a touch of physics can be used to authenticate media, detect edits, determine locations, and even prove war crimes. Participants will learn how to calculate a shooter’s distance using bullet speed and the speed of sound, analyse electrical network frequencies, and recognise platform-specific compression. No prior experience in OSINT or extensive knowledge of audio is required — this session is suitable for beginners.
Speakers
avatar for Jasmine Jacot-Descombes

Jasmine Jacot-Descombes

OSINT-Reporterin, Neue Zürcher Zeitung
Seit 2021 bei der NZZ tätig. Seit Beginn des Ukraine-Kriegs Fokus auf OSINT-Recherchen. Gefolgt von diversen Weiterbildungen in Digitaler Forensik, Spezialisierung auf Audio- & Videoforensik. Teil des OSINT-Teams der NZZ.
Friday May 29, 2026 2:00pm - 3:15pm CEST
Z1.13 - Aula Hanswijk

2:00pm CEST

There’s more to life than metadata – using analogue photos & archival documents in your investigations
Friday May 29, 2026 2:00pm - 3:15pm CEST
Public archives all over the continent are full of historical stories waiting to be told. From armed conflict and genocide to colonialism or the environment, there are enough subjects that are still very relevant for investigative journalism.

This session will focus on the challenges and, more importantly, the possibilities of working with on-paper archives and analogue photographs. Is it possible to geolocate old prints without metadata or StreetView? Are there any old-school tricks to verify images? And what about AI slop that disguises itself as historical material?

We'll also discuss the importance of historical investigative work, possible subject areas, and useful tools and resources. The session is meant to inspire investigative journalists to dive headfirst into public archives and find relevant stories using their existing skills.
Speakers
avatar for Ernst Arbouw

Ernst Arbouw

Freelance journalist and writer
Ernst Arbouw is a writer and journalist from the Netherlands. He works as a freelancer for de Volkskrant, where he writes about science, history, climate and - somehow - beached whales.

In his book H.W.R. was hier ('H.W.R. was here', published 2021), he combined investigative journalism with historical research to trace the footsteps of Canadian soldier Harold Roszell (21) who carved his initials in a tree near Groningen, shortly before he was killed in the Liberation of the Netherlands in... Read More →
Friday May 29, 2026 2:00pm - 3:15pm CEST
Z1.15 - Aula Donche

2:00pm CEST

75,000 meetings, 1,800 side jobs: Investigating policy capture and conflicts of interest with Integrity Watch EU database
Friday May 29, 2026 2:00pm - 3:15pm CEST
Did you know: since July 2024, Members of the European Parliament (MEPs) have disclosed over 55,000 meetings with lobbyists and collectively declared more than 1,800 side jobs, including roles linked to registered EU lobby organisations? Or that of the over 23,000 lobby meetings disclosed by the European Commission, only less than one in five was held with civil society organisations? This expanding body of public data enables systematic analysis of lobbying exposure, conflicts of interest, and undue influence risks in EU decision-making, and has become a key resource for investigative reporting to break stories across the EU.

During this session, we will examine the practical investigative applications of Integrity Watch EU (IW EU), a near real-time transparency and data aggregation platform on the interactions between the private sector and over 2000 EU officials. IW EU collates all available data on MEP and European Commission lobby meetings, MEP side activities, and lobbyists registered on the EU’s Transparency Register. It is part of the wider IW eco-system of platforms, deployed in 23 European countries, enabling cross-border linkages with national integrity data such as political donations, lobby registers, or public procurement procedures.

Participants will receive a technical introduction to the new real-time monitoring features of IW EU, including its underlying data sources, legal disclosure frameworks, and analytical functionalities. We will go hands-on to learn how data sets can be queried, cross-referenced, and contextualised for investigative purposes. This session is suitable for beginners, and no data journalism knowledge is required.
Speakers
avatar for Raphael Kergueno

Raphael Kergueno

Policy officer, Transparency International EU
Friday May 29, 2026 2:00pm - 3:15pm CEST
3.09

2:00pm CEST

Unmasking Palantir's Business activities with 59 FOIA requests: A Deep Dive into Corporate Influence and National Risk
Friday May 29, 2026 2:00pm - 3:15pm CEST
In this hands-on workshop, we will unpack our year-long collaborative investigation into the US data-analytics company Palantir Technologies in Switzerland. We uncovered how the tech giant tried over multiple years to sell its products to various Swiss government institutions and how it failed nearly a dozen times.

At first, our written requests to the authorities all received the same answer: "We have no contracts with Palantir." We went on to extensively FOIA the authorities and found traces of just how hard the company had tried to wriggle its way into Swiss administration, including the Armed Forces. Documents from 59 FOIA requests across 41 federal offices, combined with additional research, exposed the corporate sales playbook of one of the most controversial companies in the world.

The workshop is built around three things we want to share: First, the specifics of the methodology: how we ran a cascading FOIA strategy keyed to the name "Palantir" rather than to specific documents, letting one office's release point us to the next. And how that approach finally surfaced our crucial piece of proof: a classified Swiss army assessment warning against the procurement of Palantir's products on data-sovereignty and reputational grounds. Second, what a year of reading Palantir's correspondence with authorities taught us about how the company actually sells: high-stakes meetings between Palantir executives and senior officials at international security forums and the World Economic Forum, pro-bono pitches that arrive in moments of public crisis, and the persistence with which the company cycles between federal offices after each rejection. Third - in hindsight, which aspects of our research and reporting proved most important once Palantir sued Republik before the Zurich Commercial Court. The interview in Zurich, the extensive right-of-reply process before publication, and the documentation of every exchange. We will share what the litigation has looked like from the inside, and what we would do differently in hindsight.

Links to the investigation:
• Part 1: https://www.republik.ch/2026/02/18/how-tenaciously-palantir-courted-switzerland
• Part 2: https://www.republik.ch/2025/12/09/warum-palantir-zum-risiko-fuer-die-schweiz-wird
• English adaptation on swissinfo.ch: https://www.swissinfo.ch/eng/war-peace/why-palantir-is-becoming-a-risky-bet-for-switzerland/9066633518:25

Speakers
avatar for Balz Oertli

Balz Oertli

WAV Recherchekollektiv
Balz Oertli ist Mitgründer und Journalist beim WAV Recherchekollektiv (wav.info) in Zürich. Das journalistische Handwerk gelernt hat er beim Schweizer Radio und Fernsehen SRF. Balz stellte gerne kritische Fragen und schürft tief, er hat aber auch gelernt, genau zuzuhören als Rechtsberater... Read More →
avatar for Lorenz Naegeli

Lorenz Naegeli

WAV research collective
Investigative Journalist, Zurich, Switzerland. With the WAV research collective (www.wav.info).

Previously involved in large-scale collaborative research projects, such as the «Rüstungsreport» and the «Predator Files» or the recently published investigation on Palantir in Swi... Read More →
avatar for Marguerite Meyer

Marguerite Meyer

Journalist, Freelance
I‘m an experienced investigative journalist from Switzerland, currently based in Zurich & Barcelona. Got a murky letterbox address in Switzerland? Happy to help! —
Things I do: International stories with a Swiss twist or vice versa // AI & tech, defense & security, organised crime, migration // moderate panels & host events // journalist by day, slam poet by night// background in History, Political Science and Media Studies // Balkans & Mena... Read More →
Friday May 29, 2026 2:00pm - 3:15pm CEST
Z2.01 - Mediadrôme

2:00pm CEST

Digital hygiene - level up your security game
Friday May 29, 2026 2:00pm - 3:15pm CEST
If you’re new to digital security, this hands-on session serves as a starting point to level up your security game. We aim at introducing the basics of digital security in an easy-to-understand and interactive way.
The session will start with a fun check of your current security habits and will be tailored to the participants’ needs based on their answers. We will give an overview of the most common online threats and share practical and easy-to-implement tips to improve both your personal and your team’s level of security. We will focus on how to harden your devices (both phones and computers) and secure your accounts, as well as how to encrypt confidential data.
After this session, you will have a better understanding of how to communicate and carry out investigations securely. You will leave with the knowledge and tools to protect your data, devices, and accounts.

Speakers
avatar for Benedikt Hebeisen

Benedikt Hebeisen

Arena for Journalism in Europe
Benedikt coordinates the IT at Arena for Journalism and manages the development of the Collaborative Desk, where he supports cross-border teams with tools, workflows and secure environments. He focuses his work on the intersection of investigative journalism and technology, with a... Read More →
Friday May 29, 2026 2:00pm - 3:15pm CEST
3.13

2:00pm CEST

How to turn a data-driven investigation into a documentary
Friday May 29, 2026 2:00pm - 3:15pm CEST
More and more OSINT and data-driven investigations are being turned into documentaries for television and platforms. From the success of programs such as Cash Investigation in France, to Sweden’s flagship investigative show Uppdrag granskning, and internationally acclaimed documentaries such as the Oscar-winning Navalny (based on Bellingcat’s data-driven investigation) and the Emmy-winning Pegasus, data- , OSINT, and leak-based reporting is increasingly finding its way onto the screen.

But many journalists (specifically those who are not familiar with video production) are unsure whether their story is suitable for a documentary, or how to approach pitching, filming, security, or narration. This panel offers a practical methodology for turning an investigation into a documentary for journalists coming from print or online media. Drawing on concrete European case studies, we will explore how to pitch a documentary project to producers and broadcasters, when to start filming, how to protect sensitive data, and how to transform abstract data into compelling visual and narrative-driven storytelling.

After this session, participants will be able to:

-Assess whether a data/OSINT/leak-driven story is suitable for documentary storytelling
-Decide when and how to start filming during a data investigation
-Integrate audiovisual constraints (security, budget, narration) into their investigative workflow
 -Understand how to pitch a documentary based on a data investigation
Speakers
avatar for Sandrine Rigaud

Sandrine Rigaud

Program Director, GIJN
Sandrine Rigaud is the Program Director of the Global Investigative Journalism Network. She is an investigative journalist, director and Emmy-winning producer who served as editor-in-chief of Forbidden Stories from 2019 to 2024. In that position, she led international collaborations... Read More →
Friday May 29, 2026 2:00pm - 3:15pm CEST
1.16

3:15pm CEST

Coffee break
Friday May 29, 2026 3:15pm - 3:45pm CEST
Coffee is served in the Mediaforum (ground floor, lobby area) and on the third floor.
Friday May 29, 2026 3:15pm - 3:45pm CEST
Mediaforum

3:45pm CEST

Investigating inequality in Copenhagen’s nurseries
Friday May 29, 2026 3:45pm - 5:00pm CEST
Learn how the investigative team at the Danish Altinget used scraped data from 350 inspection reports to map structural inequality in Copenhagen’s nurseries and kindergartens, and how the method can be applied to other local areas and welfare institutions.
Speakers
avatar for Freja Wedenborg

Freja Wedenborg

Data Journalist, Altinget
Freja Wedenborg (Denmark) is a data journalist at the Danish news outlet Altinget. She also teaches data journalism, OSINT, and other digital investigative methods at the Center for Journalism at the University of Southern Denmark, and is the author of Cryptoguide for Journalists... Read More →
Friday May 29, 2026 3:45pm - 5:00pm CEST
3.02

3:45pm CEST

How local LLMs can help you with sensitive information: a beginner's guide
Friday May 29, 2026 3:45pm - 5:00pm CEST
Journalists often work with sensitive information. This information should not end up in web-based tools like ChatGPT and similar services. However, there are alternatives: local LLMs that run on your own computer. This not only ensures data protection when processing large volumes of documents, but it can also save costs on expensive APIs.

This introductory workshop aims to answer the most important questions: What hardware do I need? What frameworks are available (LM Studio, Ollama, etc.)? Which models can I use for which tasks? And what does such a workflow look like (e.g., with Python)? This session is a mix of presentation and hands-on elements.

To attend this session, no prior knowledge is required. If you want to participate in the hands-on parts, make sure to download and install Ollama and/or LM Studio and download a local model like Qwen3.5-4B

After attending this session, the participants will understand the pros and cons of using local AI models and get ideas from real-life examples on how to use this knowledge.
Speakers
avatar for Claus Hesseling

Claus Hesseling

Freier Journalist und Trainer
Macht Daten-Sachen für den NDR und HR, erfindet für die Interlink-Academy im EU-Projekt INJECT Tools für Newsrooms, ist Trainer bei der ARD.ZDF-Medienakademie und anderen. Twitter: @the_claus... Read More →
avatar for Johan Schujit

Johan Schujit

Data Engineer, Resolve.
I'm a data engineer responsible for EveryPolitician and PoliLoom at OpenSanctions. I'm a self-taught hacker with a stubborn belief that good data should be open and technology should serve the public interest. Previously at Follow the Money.

Friday May 29, 2026 3:45pm - 5:00pm CEST
3.04

3:45pm CEST

Mapping and spatial analysis in code
Friday May 29, 2026 3:45pm - 5:00pm CEST
Data journalists have traditionally thought of maps and spatial calculations as a job for special mapping software, like QGIS. But it's often more efficient to do GIS work within the same script that you perform the rest of your analysis.

In this session, you will see how easy it is to work with GIS within your code and share interactive maps with colleagues. To follow along, participants should have some experience in data journalism and a curiosity about the relationship between data and maps.

This session will introduce participants to a new world of possibilities for doing spatial analysis in code. While participants will benefit from simply observing, those who want to run the code should have R Studio installed https://posit.co/download/rstudio-desktop/
Speakers
avatar for Robert Gebeloff

Robert Gebeloff

Reporter, New York Times
Robert Gebeloff has worked as a data projects reporter for The New York Times since 2008 and has taught data journalism for many years in newsrooms and at conferences. He was co-winner of the George Polk Award in 2015 and was a Pulitzer Prize finalist in both 2015 and 2016 for projects... Read More →
avatar for Jonathan Stoneman

Jonathan Stoneman

Arena for Journalism in Europe
Former BBC journalist, turned datajournalist, trainer, consultant. Works with Arena as Lead Trainer, Arena Academy. 
Friday May 29, 2026 3:45pm - 5:00pm CEST
3.09

3:45pm CEST

Newsroom infrastructure for AI experimentation
Friday May 29, 2026 3:45pm - 5:00pm CEST
Learn approaches to tooling and infrastructure that allow every member of your newsroom to participate in your AI experiments, along with how to test and track both improvements and disappointments along the way!

In this workshop, we'll look at: Python libraries that can turn tiny snippets of code or prompts into shareable web apps (Gradio, Streamlit), platforms that allow non-technical users to build evaluations and experiment on their own (Braintrust, n8n), and approaches to models and tooling that provide long-term value and flexibility when selecting services and providers (Pydantic, OpenRouter).

Whether you're looking to use AI for investigative work or to ease the copy-editing burden, increasing participation across the newsroom can help discover limitations and inspiration, along with easing anxieties over automation. To get the most out of this session, participants should have a working knowledge of Python.

After attending this session, participants will have a suite of approaches to bring non-technical members of their newsroom into their AI processes. Participants should have Jupyter installed or a Google account to work in the cloud.
Speakers
avatar for Jonathan Soma

Jonathan Soma

Knight Chair in Data Journalism, Columbia University
Jonathan Soma is the Knight Chair in Data Journalism at Columbia University, where he serves as Director of the Data Journalism MS program and the Lede Program, an intensive data journalism summer course. His lectures cover everything from basic Python and data analysis to interactive... Read More →
avatar for Philip McMahon

Philip McMahon

Software Developer, The Guardian

Friday May 29, 2026 3:45pm - 5:00pm CEST
3.05

3:45pm CEST

One day, I decided to establish a nonprofit media outlet: What I wish I knew back then
Friday May 29, 2026 3:45pm - 5:00pm CEST
Many journalists, disillusioned with traditional journalism outlets and shrinking media freedoms in their countries, decide to branch out on their own. In Europe, the number of public interest media outlets has been rising, but the sector consists mostly of small to medium-sized newsrooms. The Journalism Value Project found that half of the public interest media it surveyed (174) reported annual budgets of less than 200,000 euros and 70% of all surveyed centres were purveyors of investigative journalism. They found that the sector faced an uncertain future and other existential threats, such as legal, governmental, and similar.

In this panel, speakers will give guidance, tips, and a heads up to people thinking of branching out on their own, those who recently established their own media, and those who have been doing it for a long time. The panel will discuss the intricacies of establishing and running a non-profit media, and things you might have been thinking about.

How does a centre survive the first 2-3 years before funding begins to stabilise? How does the founder survive? What strategies can you adopt? We will also discuss the topics nobody told us about when we were starting out. For instance, if you’re a journalist, you will probably not do much journalism for the foreseeable future. You will need to find a way to manage journalists while being a journalist first yourself. You will compete for funding with your friends and colleagues. You may lose yourself and your personal priorities while trying to make ends meet for yourself and your team. How to navigate it all?

Join this panel to learn how not to make the same mistakes or miss the same opportunities as we did.
Speakers
avatar for Anuška Delić

Anuška Delić

Founder and Editor in Chief, Oštro
Based in Slovenia, Anuška Delić is an investigative and data journalist. In 2018, she established Oštro, a non-profit center for investigative journalism in the Adriatic region. In 2021, Oštro established a sister center in Croatia, effectively creating a unique two-headed micro-regional... Read More →
avatar for Cecilia Anesi

Cecilia Anesi

Co-founder, IrpiMedia
Cecilia Anesi is an investigative reporter with IrpiMedia, the investigative media outlet of Italy's investigative journalism centre IRPI (Investigative Reporting Project Italy) which she co-funded in 2012. IRPI is a member of the Global Investigative Journalism Network and the OCCRP... Read More →
avatar for Péter Nádori

Péter Nádori

COO, Direkt36
COO at Direkt36, the leading Hungarian investigative journalism center.
Formerly deputy CEO at media conglomerate Lapcom, Péter earlier had been the managing editor of alternative weekly Magyar Narancs, and editor-in-chief of pioneering internet news portal Origo (in the period before its incarnation as a propaganda outlet). He also helped the launch... Read More →
Friday May 29, 2026 3:45pm - 5:00pm CEST
3.13

3:45pm CEST

Using local AI-models to investigate with explicit or sensitive data
Friday May 29, 2026 3:45pm - 5:00pm CEST
Large language models (LLMs) have become a common tool in most investigative newsrooms. But what do you do when prudish language models refuse to process what you are investigating? Or you have so much sensitive information that it makes your stomach hurt to send it to Big Tech?

Enter local AI models!

Norwegian Broadcasting Corporation (NRK) has used AI models running on their own machines or leased ones to carry out several projects. Together with Lighthouse Reports, we exposed a hidden class divide in Norwegian courtrooms – revealing that the wealthy receive more lenient sentences than the poor – by analyzing 9,000 verdicts. The NRK team then turned its attention to the adult industry, reviewing over 1,000 films to document a sharp rise in choking incidents.

While the subjects differ vastly, the projects share a common thread: the controlled use of local AIs to process massive datasets. We want to share our methodology, our findings, and insights along the way – but most of all demonstrate how to get you started with using the latest local models for your specific investigative needs.

In the presentation, we will show concrete examples of how to run the latest local models and invite the audience to think with us about how these models can enhance investigative workflows.
Speakers
avatar for Henrik Bøe

Henrik Bøe

Data Journalist, NRK
avatar for Christian Nicolai Bjørke

Christian Nicolai Bjørke

Journalist, NRK
Investigative/data journalist at Norwegian Broadcasting Corporation. Sigma Awards Winner 2023 for the project «World’s apart».
Friday May 29, 2026 3:45pm - 5:00pm CEST
Z1.13 - Aula Hanswijk

3:45pm CEST

FunForensics: What can you squeeze out of a second-hand laptop?
LIMITED
Friday May 29, 2026 3:45pm - 5:00pm CEST
Limited Capacity seats available
What can you learn from a discarded laptop? In this session, participants will gather in small groups, and each will receive a laptop. They will have 50 minutes to get as much information as possible from the machines, especially about their past owners. Due to the risks to their (past owners') privacy, a clear code of conduct will be read out at the beginning of the session: no personal information contained in the machines will be photographed or shared at any time.

The session organizers will document the strategies developed by each team to investigate and share the results with all participants. The participants' findings are not shared with the room (for privacy reasons). Besides the fun of satisfying naked curiosity, participants will be able to hone their forensics skills on hardware, develop investigative strategies in large amounts of files, and use OSINT techniques to cross-validate information. They will also have to develop team management skills so as to ensure that all team members have access to the data.

Finally, this session will serve us as a reminder to seriously erase data before disposing of hardware. Please note: in order to attend this session, you need to register. The maximum number of participants is capped at 20.
Speakers
avatar for Pierre Romera Zhang

Pierre Romera Zhang

Chief Technology Officer, ICIJ, France
Pierre Romera has been Chief Technology Officer at the International Consortium of Investigative Journalists (ICIJ) since 2017. He manages a team working on the platforms that enabled more than hundreds journalists to collaborate on the Pandora Papers, the Uber Files, the FinCEN Files... Read More →
Friday May 29, 2026 3:45pm - 5:00pm CEST
2.04

3:45pm CEST

Investigating with trade data
Friday May 29, 2026 3:45pm - 5:00pm CEST
This session will cover how to use trade information for investigative reporting, from the theory behind commercial flows to its application to real investigative cases. The first part of the presentation will focus on the "dictionary" that is crucial to read and interpret trade data. Then, it will explore how to source official customs statistics for free, understand crucial variables in import-export sheets, and find workarounds to expensive third-party commercial providers.

Examples from real investigations will show the power of using trade data in covering topics such as deforestation, sanctions evasion, the military industry, cocaine trafficking, but also much more "ordinary" commercial flows that might be linked to pollution/environmental issues. Throughout the session, participants will be welcome to bring examples of commodities they would like to track and guided in a few hands-on exercises to familiarise themselves with finding and understanding this kind of data.

The session is suitable for beginners. No technical/coding experience is needed, but the participants should be familiar with spreadsheets.


Speakers
avatar for Edoardo Anziano

Edoardo Anziano

Investigative Reporter, IrpiMedia
Investigative journalist covering transnational organised crime & illicit economies
Friday May 29, 2026 3:45pm - 5:00pm CEST
Z0.10

3:45pm CEST

Tracking AI scam ads and platform failure under the DSA
Friday May 29, 2026 3:45pm - 5:00pm CEST
AI-generated scam advertisements have flooded European social media platforms, using deepfake videos, cloned voices, and fabricated news stories to lure thousands of victims into fraudulent investment schemes. While the EU's Digital Services Act (DSA) was designed to curb illegal and harmful content, these scams continue to spread at scale, exposing major gaps in platform enforcement and regulatory oversight.

This session will show how to investigate AI-driven scam ads and platform failure using publicly available tools, leaked material, and EU tech legislation. We will walk through how to find and identify and analyse AI-generated scam ads and deepfake content, use Meta's Ad Library to map scam campaigns, detect duplication and evasion tactics, and estimate scale. The session will also address how to collaborate effectively with civil society organisations and trusted flaggers to monitor platforms and access specialised expertise.

As part of the presentation, we'll also talk about how to investigate the Digital Services Act in practice, including transparency obligations, systemic-risk provisions and reporting mechanisms; how to document and report on failures of enforcement by platforms and public authorities, and how to connect platform-level analysis to human stories, including victims' experiences. That also includes how to responsibly handle leaked messages, call scripts, and fake trading platforms, balancing verification, security and ethical considerations.

The session will include concrete examples and live walkthroughs, showing how journalists can combine platform data, legal frameworks and human sources to hold tech companies and regulators accountable. 
Speakers
Friday May 29, 2026 3:45pm - 5:00pm CEST
1.16

3:45pm CEST

Understanding and investigating Polymarket data
Friday May 29, 2026 3:45pm - 5:00pm CEST
Predictive Markets are on the rise, and with them, easy money for insider knowledge and those who can influence their outcomes. While regulation is slow to catch up, investigations don't have to be. Polymarket is the most well-known of these predictive markets, and one thing that defines it is open data on all exchanges going on in a market.

This session will cover key concepts of Polymarket and the possibilities and limitations of investigating it. It will include basic Python code to extract and analyse its open data, and a new open source user interface tool you can use to quickly understand the market and accounts. In the end, we will learn techniques to identify suspicious actors from a few example markets.

Although some code will be shared during the session, you don't need to have a working knowledge of Python to participate.
Speakers
Friday May 29, 2026 3:45pm - 5:00pm CEST
Z1.15 - Aula Donche

3:45pm CEST

Investigating arms and defence industry - Networking roundtable
Friday May 29, 2026 3:45pm - 5:00pm CEST
This roundtable is for everyone who has investigated - or would like to - weapons trade, defense budgets, and military. What should we investigate next, and how can we join forces?  Join this roundtable to discuss ideas and network with reporters working on the subject across Europe and beyond.
Speakers
avatar for Hans-Martin Tillack

Hans-Martin Tillack

Investigative Reporter
Hans-Martin Tillack is an investigative reporter based in Berlin. Until 2025, he was a senior reporter on the investigative team at Welt and Welt am Sonntag. Prior to this, he led investigations at the Berlin office of Stern magazine. From 1999 to 2004, he was Stern's EU correspondent... Read More →
avatar for Lorenz Naegeli

Lorenz Naegeli

WAV research collective
Investigative Journalist, Zurich, Switzerland. With the WAV research collective (www.wav.info).

Previously involved in large-scale collaborative research projects, such as the «Rüstungsreport» and the «Predator Files» or the recently published investigation on Palantir in Swi... Read More →
Friday May 29, 2026 3:45pm - 5:00pm CEST
Z2.01 - Mediadrôme

3:45pm CEST

How close is too close? Setting boundaries with human and digital sources
Friday May 29, 2026 3:45pm - 5:00pm CEST
Whether it’s a human source or a data set – if you want to get something out of it, you have to engage with it. The closer you look into the data or the closer you interact with a protagonist, the higher the chances for a good story. But what happens if boundaries blur? How close is too close?

What helps if you realize an investigation (or a tiny piece of information) is emotionally overwhelming? How can you shield yourself from unbearable content or heartbreaking narratives? How can you set professional boundaries if protagonists show abusive or simply inappropriate behaviour? How can you end work-relationships with protagonists after a story is done, even though they try to keep in touch constantly, or you feel responsible for them? How can you avoid getting sucked in by data sets, forgetting about day and night, regular office hours, and ignoring warning signs of your body?

Psychotherapist Friederike Engst and journalist Malte Werner of the German “Helpline” for journalists will guide you with their combined expertise through the session, in which you can ask your own questions, exchange ideas, and learn from each other.
Speakers
avatar for Malte Werner

Malte Werner

Projektleiter Helpline, Netzwerk Recherche
Malte Werner ist gelernter Agenturjournalist und war viele Jahre freier Reporter. Jetzt hegt und pflegt er das zarte Pflänzchen des gemeinnützigen Journalismus im Grow-Greenhouse, dem Zentrum für gemeinnützigen Journalismus und Medienvielfalt von Netzwerk Recherche. Bei NR hat... Read More →
Friday May 29, 2026 3:45pm - 5:00pm CEST
2.03

3:45pm CEST

How to find new angles in reporting on a long-running conflict
Friday May 29, 2026 3:45pm - 5:00pm CEST
When covering a long-running conflict, finding new ways to tell the story and keeping audiences engaged is a big challenge, especially when the stakes are too high for events to pass unnoticed. As Russian journalists in exile, we have been reporting on Russia's aggression against Ukraine for more than four years. For the third anniversary of mobilisation, which sent hundreds of thousands of Russian men to war, we developed a new approach to illustrating the consequences of that aggression for Russian society itself. By narrowing our focus to one of Russia's 85 regions and drawing on a range of sources, we were able to establish the most precise casualty figures ever reported at that level, combining that data with carefully crafted storytelling. The result proved effective: the piece reached not only Russian audiences, but widely read globally as well.

Attendees will leave this session with both the inspiration to keep reporting on long-running events even when audiences show signs of fatigue, and concrete techniques for doing so. These include thinking outside the box, revisiting older sources that may hold new value, and combining different reporting methods -data analysis, interviews, and OSINT- to keep coverage of a long conflict fresh, rigorous, and compelling.
Speakers
avatar for Polina Uzhvak

Polina Uzhvak

Onderzoeksjournalist, iStories
My name is Polina Uzhvak, and I work as a data journalist and reporter for iStories, a Russian independent media outlet. I used to investigate social problems and injustice by combining a data-driven approach with field reporting. After the full-scale war in Ukraine began, my colleagues and I were forced to leave the country. Now I work from exile, investigating... Read More →
Friday May 29, 2026 3:45pm - 5:00pm CEST
Z0.15

5:15pm CEST

Budgeting café
Friday May 29, 2026 5:15pm - 6:15pm CEST
Do you want to learn how to translate your ideas into budgets, explore different financial scenarios, draft budgets for grant applications, and improve your financial reporting? Join the budgeting cafe to ask anything you’ve always wanted to know about journalism finance.

Please note: you need to book a time slot in advance. You can do it HERE.
Speakers
avatar for Cora Moyano

Cora Moyano

Finance Manager, Arena for Journalism in Europe
Happy to share and learn about finance, business models, fundraising, processes, systems, and transparency in nonprofits. It doesn't need to be boring or terribly serious ;)

Friday May 29, 2026 5:15pm - 6:15pm CEST
2.02

5:15pm CEST

Cross-border café
Friday May 29, 2026 5:15pm - 6:15pm CEST
This cafe/clinic is intended as a safe space for individuals or teams involved in a cross-border investigation where they can receive custom support with specific challenges. Potential topics include pitching stories to editors cold-door, finding colleagues to pursue a story, managing and resolving team conflicts, organising workflows, beginning cross-border projects from scratch, and tips for progressing when you find yourself stuck in an investigation.

Please note: you need to book a time slot in advance! You can do it HERE.
Friday May 29, 2026 5:15pm - 6:15pm CEST
2.03

5:15pm CEST

Data helpdesk
Friday May 29, 2026 5:15pm - 6:15pm CEST
Stuck on something technical? Come talk it through.

Maybe you've got a folder of 800 PDFs and no good way in. Maybe a source sent you a database and you don't know where to start. Maybe your scraper broke the night before deadline, or you're staring at an Excel file with merged cells and dreams. Maybe you just want to know if the thing you're trying to do is actually possible, before you sink three more days into it.

Bring it to a one-to-one session with a data engineer. No prep required, just show up with the problem.

Things people often bring:
  • Messy data that won't behave
  • Scraping and extraction that's stuck
  • An investigation idea where you don't know if the data exists
  • A manual task you suspect could be automated
  • When to use LLMs, and when not to
  • Whatever else you'd like to discuss!

We may get in touch before the conference to learn more, so we can hit the ground running.
Please note: you need to book a time slot in advance. You can do it HERE.

Speakers
avatar for Johan Schujit

Johan Schujit

Data Engineer, Resolve.
I'm a data engineer responsible for EveryPolitician and PoliLoom at OpenSanctions. I'm a self-taught hacker with a stubborn belief that good data should be open and technology should serve the public interest. Previously at Follow the Money.

Friday May 29, 2026 5:15pm - 6:15pm CEST
Z0.15

5:15pm CEST

EU/FOI café
Friday May 29, 2026 5:15pm - 6:15pm CEST
Do you need help drafting an FOI request, writing a complaint about your FOI request being rejected, or understanding EU legislation? Are you looking for specific EU databases, experts, and sources? Come to the "FOI Cafe" for advice!

Please note: you need to book a spot in advance. You can do it HERE.
Speakers
avatar for Alexander  Fanta

Alexander Fanta

Journalist, Follow the Money
Journalist bei Follow the Money mit Fokus auf EU-Digitalpolitik. Davor Stationen bei netzpolitik.org, Austria Presse Agentur und Der Standard.
Friday May 29, 2026 5:15pm - 6:15pm CEST
1.04

5:15pm CEST

Exploring North Data registries: book a personalised consultation
Friday May 29, 2026 5:15pm - 6:15pm CEST
Do you want to untangle complex corporate webs, uncover money laundering schemes, or gain transparency into international business structures? Book a personal time slot to explore how to use North Data for your specific investigations.

As a versatile tool for OSINT and data analysis that journalists can use free-of-charge, you gain access to 23 countries, more than 86 million companies, and 152 sources. Discover how to:

* Dig Deeper: Navigate commercial registry files, financial statements, and patents._
* Spot Red Flags: Use CEO changes and network centrality as early warning signals._
* Avoid Pitfalls: Understand country-specific data quirks and registry landscapes._

Sign up for a slot HERE and bring your specific research questions.
Speakers
avatar for Christina Brause

Christina Brause

Investigator in Residence & Investigative Data Journalist, North Data
Christina Brause ist investigative Datenjournalistin und Investigator in Residence bei North Data. Zuvor war sie Stellvertretende Ressortleiterin des Investigativteams von Welt und Welt am Sonntag. Ihr inhaltlicher Schwerpunkt liegt auf internationaler Sicherheit, insbesondere an... Read More →
Friday May 29, 2026 5:15pm - 6:15pm CEST
3.09

5:15pm CEST

Safety and Security café
Friday May 29, 2026 5:15pm - 6:15pm CEST
Do you have questions or considerations about digital security? Do you need help setting up your hard disk encryption, or do you need advice on how to use a password manager? Would you like security advice on your personal software, hardware, or on precautions when traveling?

Bring your questions for a one-to-one session with our trainers. The individual consultations are suitable for small teams or individuals who have specific questions or face security concerns.

We will connect you with the digital security trainers, who may contact you before the conference to learn more about your concerns.

Topics:
  • Hardening your devices
  • Securing your accounts
  • Spyware concerns
  • Checking your digital footprint
  • Whatever else you'd like to discuss!

Please note: you need to book a time slot in advance! You can do it HERE.
Speakers
avatar for Ela Stapley

Ela Stapley

Senior Digital Security Adviser
Ela Stapley is a Senior Adviser in Digital Security and Strategy who has spent the past decade working with journalists, newsrooms, and journalist networks to provide high-level digital security support.  During this time, she has trained and provided individual assistance to over... Read More →
avatar for Benedikt Hebeisen

Benedikt Hebeisen

Arena for Journalism in Europe
Benedikt coordinates the IT at Arena for Journalism and manages the development of the Collaborative Desk, where he supports cross-border teams with tools, workflows and secure environments. He focuses his work on the intersection of investigative journalism and technology, with a... Read More →
Friday May 29, 2026 5:15pm - 6:15pm CEST
1.16

5:30pm CEST

Meet up with Everlaw - learn more about our document review and discovery platform
Friday May 29, 2026 5:30pm - 6:00pm CEST
Everlaw's document review and discovery platform — free for journalists — helps reporters dig deeper into large document sets, understand data, surface insights, and streamline their investigations to chart a straighter path to the truth. Join this 30-minute session to get more information about the functionalities of our platform and how to use it! You can learn more at: https://www.everlaw.com/forgood/
Speakers
avatar for Chris Miles

Chris Miles

Media Partnerships Lead, Everlaw
Chris is the senior lead for media partnerships at Everlaw, an ediscovery tool free and heavily discounted for journalists working in the investigative space. Chris works at the intersection of technology and journalism, and he is an expert at helping bridge the gap between cutting-edge... Read More →
Friday May 29, 2026 5:30pm - 6:00pm CEST
Z2.01 - Mediadrôme

6:00pm CEST

Walking tour: Historical Mechelen (sign up here)
Friday May 29, 2026 6:00pm - 8:00pm CEST
Did you know that Mechelen played an important political and economic role in the Burgundian period in the fifteenth century, when the city was under the rule of the Dukes of Burgundy? Many historical buildings testify to this. Hold tight, because it's a long list: St. Rumbold's Cathedral, the former palaces of Austria and Margaret of York, the Palace of the Grand Council, etc., etc. So no dilly-dallying! Follow the guide through sixteenth-century Mechelen. The Historical City Walk now also takes in the newly discovered fourteenth-century wall paintings in St. John's Church. Unmissable!

If you want to participate, please sign up HERE (we have 25 spots in total).                
Friday May 29, 2026 6:00pm - 8:00pm CEST

6:00pm CEST

Walking tour: Women of Mechelen (sign up here)
Friday May 29, 2026 6:00pm - 8:00pm CEST
This walk looks at the power of women and their influence on the city. It pays tribute to some of Mechelen's foremost women, from the highest ranks to the lowest, from the distant past through to the present day. Among other things, you will visit Margaret of Austria's palace and what are now the law courts, and you will have an outside view of Margaret of York's palace, which now houses the municipal theatre. The walking tour takes 2 hours and will start at 18:00 at Schepenhuis - Grote Markt, Vleeshouwersstraat 6, 2800 Mechelen.

You need to register HERE to join the tour (we have 25 spots in total).
Friday May 29, 2026 6:00pm - 8:00pm CEST

6:15pm CEST

From the Soviet Union to the Moon – using OSINT on Tintin
Friday May 29, 2026 6:15pm - 7:30pm CEST
Comic-book hero Tintin is, without a doubt, the most famous Belgian journalist who never lived. In the course of his 24 albums, which brought him from the early Soviet Union to the surface of the Moon, Tintin did preciously little *actual writing*, but there are still one or two lessons journalists can learn reading the adventures. ‘

Your hosts for this session have set a "trail" through the Tintin stories, and the legacy of Belgium's most famous boy adventurer. Come and compete in a light-hearted quiz which we hope will help you to fall in love with Herge's creation all over again - this time as a datajournalist!
Speakers
avatar for Jonathan Stoneman

Jonathan Stoneman

Arena for Journalism in Europe
Former BBC journalist, turned datajournalist, trainer, consultant. Works with Arena as Lead Trainer, Arena Academy. 
avatar for Ernst Arbouw

Ernst Arbouw

Freelance journalist and writer
Ernst Arbouw is a writer and journalist from the Netherlands. He works as a freelancer for de Volkskrant, where he writes about science, history, climate and - somehow - beached whales.

In his book H.W.R. was hier ('H.W.R. was here', published 2021), he combined investigative journalism with historical research to trace the footsteps of Canadian soldier Harold Roszell (21) who carved his initials in a tree near Groningen, shortly before he was killed in the Liberation of the Netherlands in... Read More →
Friday May 29, 2026 6:15pm - 7:30pm CEST
Z1.15 - Aula Donche

6:15pm CEST

OSINT challenge 2.0
Friday May 29, 2026 6:15pm - 7:30pm CEST
Back by popular demand – and this time the hunt is designed by the people who beat you the last two years: the Scandinavian team. This isn’t a workshop. It’s a chase. No panels. No slides. Just clues, dead ends, and the creeping suspicion that someone else is faster than you. Follow the trail, outsmart the others, and prove your OSINT instincts still work outside your browser.
Speakers
avatar for Didde Elnif

Didde Elnif

Journalistic lecturer, University of Southern Denmark (SDU)
Journalistisk lektor og Ph.d.-studerende på Center for journalistik på Syddansk Universitet. Forsker i mediernes brug af sociale medier og underviser i digital journalistik og radio.
Er uddannet journalist fra DMJX, cand.public fra SDU og har en master i digital kultur fra King... Read More →
Friday May 29, 2026 6:15pm - 7:30pm CEST
Z0.10

6:15pm CEST

✨ Dataharvest Ultimate Pub Quiz ✨
Friday May 29, 2026 6:15pm - 7:30pm CEST
Finally! The ultimate Dataharvest pub quiz is here! Come, make a team, and test your knowledge of journalism. Expertly done by Constanze and Max, our great gamemasters 🪄 

Speakers
avatar for Constanze Bayer

Constanze Bayer

Datenjournalistin, BR Data
Constanze arbeitet als Datenjournalistin mit an Geschichten rund um Klima und Umwelt. Das können große Storytelling-Projekte wie "Schnee war gestern" zur Zukunft des Schnees in den Alpen oder ein "CO2-Rechner" sein, der die Wirkung von Heizungsgesetz und Co illustriert, aber auch... Read More →
avatar for Max Donheiser

Max Donheiser

Data journalist, Tagesspiegel
Max Donheiser is a data journalist at the Tagesspiegel Innovation Lab. Using data analysis and visualizations, he makes complex social issues accessible – and enjoys wrestling with stubborn spreadsheets and uncovering hidden data treasures. Originally from the USA, he came to Berlin... Read More →
Friday May 29, 2026 6:15pm - 7:30pm CEST
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