Today, safety of children on the Internet environment is one of the important issues of information security in the world. Each state is interested in having healthier and more valuable future generation. The article analyzes the threats faced by children on the Internet and examines the international and domestic measures, normative documents and laws related to the provision of children's information security. The technological duties arising from relevant legislative acts are defined. Suggestions on taking technological measures to ensure efficient protection of children from harmful information are put forward (pp.108-116).