January 28th marks the Data Privacy and Protection Day. First introduced by the Council of Europe in 2006, it aims to raise public awareness and understanding of what happens to people’s personal data and the rights they have to privacy and data protection; and to highlight good practices in this area. Privacy has traditionally been a fundamental value for libraries – and this day offers an opportunity to reflect on how the latest technological and social developments shape the roles and duties of librarians in championing privacy in the digital age.