Dataharvest 2025 - the European Investigative Journalism Conference

Investigating algorithms is not just about obtaining code. On the contrary, there's so much we can learn from an automated system – whether Al-driven or rule-based – by looking the impact it has on individuals, minorities and marginalized communities. We can examine the people involved in its development and deployment; the companies who profit; the data it generates; and the weight given to the parameters it relies on to make decisions. How do we find this data and approach the investigation? This session is aimed at journalists with previous experience in reporting about automation and AI and those who attended our beginner level session (Saturday, 0930). In this practical workshop we will explore two real, successful cases of investigative algorithmic accountability reporting. These investigations uncovered how automated systems are used for welfare allocation in different European countries. This will be a hands-on session – don't expect ready-made answers. Instead, all participants will start with the same, limited information about the case. Together, we will explore the different methodologies and approaches we can use to uncover how an algorithm works, even when we have little data to start with. During the workshop, we will aim to obtain as many techniques and methods as possible and inspire new investigations.