This book constitutes the refereed proceedings of the Second Annual Privacy Forum, APF 2014, held in Athens, Greece, in May 2014. The 12 revised papers presented in this volume were carefully reviewed and selected from 21 submissions. The topics include: the concept and implementation of "privacy by design", with applications to encrypted databases; the study of video surveillance architectures and new networking concepts and innovative solutions for identity management. The papers address the technical, legal, and economic aspects of these problems.