A stern and principled warning from Daniel Therrien, Canada’s Privacy Commissioner (Office of the Privacy Commissioner). January 28, 2019 Versions of this op-ed were published by two newspapers. On this international Data Privacy Day, and after a year of severe abuses, it is worth reflecting on why it is essential to protect privacy. Privacy is often cast as an abstract or undervalued concept associated with a desire to keep secret certain aspects of our activities or our per