Yesterday, a data breach complaint was filed with several data protection authorities in the European Union by Dr Johnny Ryan of Brave (the private web browser); Jim Killock, Executive Director of the Open Rights Group; and Michael Veale of University College London. A post on the Brave website explains the basis of the action as follows: "Every time a person visits a website and is shown a “behavioural” ad on a website, intimate personal data that describes each visitor, and