The BY-COVID project works towards enabling and improving the accessibility of COVID-19 and other infectious disease data to researchers, policy-makers, and the public. The BY-COVID Fest took place on 23-25 January 2024 in Athens, Greece, as the final event in a series of training events on Research Data Management (RDM) and the General Data Protection Regulation (GDPR). The present document provides an overview of the organised sessions of the GDPR BY-COVID Fest workshop and their key outcomes.