This book constitutes the thoroughly refereed post-conference proceedings of the First
International Workshop on Citizen Sensor Networks CitiSens 2012 in Montpellier France on
August 27 2012. The 7 revised full papers presented togehter with 1 keynote lectures were
carefully reviewed and selected from 16 submissions. The accepted papers deal with topics like
crowdsourcing smart cities multi-agent systems privacy in social networks data anonymity or
smart sensors.
