Volume 9, Issue 4 Privacy self-management and the issue of privacy externalities: of thwarted expectations, and harmful exploitation Simeon de Brouwer, Independent PUBLISHED ON: 21 Dec 2020 DOI: 10.14763/2020.4.1537 You often share other people’s personal data alongside your own, because you benefit from it (and so do controllers). KEYWORDS: Interdependent privacy, Privacy externalities, Notice and consent, Data protection by design, Joint controllership