This paper   Smart Cities at Risk!: Privacy and Security Borderlines from Social Networking in Cities written by Moustaka, V. Theodosiou, Z. Vakali, A. and Kounoudes A., deals with the impact of Online Social Networks (OSN) privacy and security risks on the social dimensions of smart cities and attempts to investigate their interaction. Moreover, it introduces the issue of children’ privacy and security and proposes a relationship model of security and privary threats.