This paper examined the potential risks and challenges associated with adolescents' use of the internet and communication technologies, especially in light of the COVID-19 pandemic. While these technologies offer many benefits, such as facilitating remote learning, they can also have negative effects on young people. The study aims to classify and consolidate the various threats and challenges related to internet use for adolescents. In response to these challenges, the paper advocates for the need to teach digital citizenship education as a critical skill for students to navigate the online world safely and responsibly. Overall, the study aims to raise awareness of the potential risks and highlight the importance of digital citizenship education in mitigating these threats.