Luca Foschini, Jennifer Goldsack, Andrea Continella and Yu-Xiang Wang

Person outdoors looks at smartphone
Google’s $2 billion acquisition of Fitbit last month has been met with concern from privacy advocates worried about how the tech giant will use personal fitness data. This reaction prompted the tech giant to clarify that the acquisition is "about devices, not data." The deal has brought to light a larger issue that we all seem to gloss over: Every day, millions of people publicly share seemingly...