A number of top privacy commissioners from all continents (Asia, Europe, Americas, Oceania and Africa) have published a joint statement raising concerns over the data protection safeguards of Facebook's new currency project. According to TechCrunch, regulators seek more clarity on what users' personal data will be used for and how users will be able to control what their data is used for. The list of signatories includes Canada's privacy commissioner Daniel Therrien; the European Union's data protection supervisor, Giovanni Buttarelli; U.K. Information commissioner, Elizabeth Denham; Albania's information and data protection commissioner, Besnik Dervishi; the president of the Commission for Information Technology and Civil Liberties for Burkina Faso, Marguerite Ouedraogo Bonane; and Australia's information and privacy commissioner, Angelene Falk.