The current era is characterised by many technologies with online access. This paper lists the most significant negative phenomena associated with the use of modern technologies: the harmfulness of Internet use in general, Internet addiction, bullying through information and communication technologies (ICT), sites with toxic content, defamation and intolerance, false and fraudulent messages and conspiracies, radicalization, communication with unknown people via the Internet and explicit content. Other risks include: the spread of child pornography, sexting and cyberbullying. Our research and its results will show how information and telecommunication technologies are used by second primary education stage pupils attending selected primary schools. The paper concludes with recommendations for practice that emerged from the empirical findings.