This book constitutes the thoroughly refereedpost-conference proceedings of the Third Annual Privacy Forum, APF 2015, heldin Luxembourg, Luxembourg, in October 2015.

The 11 revised full papers presented in this volume werecarefully reviewed and selected from 24 submissions. The topics focus onprivacy by design (PbD), i.e. the attempt to combine technical and organizationalmeasures to ensure the basic rights of the individual. The papers are organizedin three sessions: measuring privacy; rules and principles; legal and economicperspectives on privacy.