The development of the Internet observed today leads to numerous significant benefits in many areas of human activity, but at the same time it is a source of new, dangerous social phenomena. Of them, the increasingly common trend called sharenting deserves attention, which involves parents regularly publishing detailed information about their children, as well as photos and videos of them, on the Internet. The aim of the article is to draw attention to the potential threats to minors resulting from the phenomenon of sharenting, and then to examine whether the parents’ reckless publication of information about the child on the Internet may constitute a threat to the child’s good within the meaning of the provisions of Polish family law and, as such, justify limitation of parental authority by the guardianship court.