Russmedia: a court case imposing data protection obligations which many website operators may struggle to meet?

In December 2025, the Grand Chamber of the Court of Justice of the European Union released its decision in the case of Russmedia . It focusses on the data protection obligations of the operator of an online marketplace, in terms of the personal data contained in ads placed by its users. Although it is an EU decision, and so not directly binding on courts in the UK, it is still of interest. I am…