Digital information about users is undoubtedly the oil of the new economy. Collecting, processing, and leveraging such data at large scale, a trend called Big Data, is the fuel that powers many online services like Facebook, Google, Amazon and Netflix. While Big Data has a tremendous potential, it also raises severe ethical concerns. My main research interests fall under these two sides of Big Data, with a strong focus on human behavior – an emerging research field typically referred to as Computational Social Science.