The objective of this specialization degree presentation is to give the regulatory framework of electronic communication services in Croatia following their adjustments to the European Union directives, with particular emphasis on the regulatory and legal framework aiming at the protection of children when using such electronic services. It also presents the EU experience with various programs ensuring safer use of Internet and cellular phones by children and youth, stressing in particular some examples from Sweden. It gives the operators’ obligations regarding safety and protection of their network and the way to ensure an exemplary protection of its users against misuse and abuses or frauds within the public communication network, prejudicing them against such practices before they start using any electronic communication service. Today’s children and youth can hardly imagine life without daily communication on social networks. In order to ensure their safety while surfing on those social networks, it is very important to teach them the basic protection and behavior rules when visiting them so they can be protected against misuse of their personal data and their private life can be safeguarded. This presentation also states clearly the operators’ obligations when providing services at a special price as well as their additional obligations when providing services not meant for children but for adults only. Parents’ participation in all of the children’s activities on Internet is the best safeguard for their protection, together with the implementation by the children’s parents of technology protection measures on their computer as well as openly discussing with them the good and bad aspects of Internet and setting allowed time limits for viewing online of the social networks visited by children. It is certainly better and more useful to have one real good friend with whom to spend time rather than hundreds of virtual friends.