Cyberbullying is an extremely damaging form of interpersonal violence. Little is yet known about cyberbullying behaviors in the child and youth population during the COVID-19 pandemic and what effect this reduction in face-to-face social interactions has had on an increase in socialization via the Internet and cyberbullying. The present study is a cross-sectional descriptive study conducted in young people between the ages of 12 and 27 years attending two secondary schools in southern Spain (N = 733) to examine differences regarding sociodemographic characteristics, academic performance, and digital device use (independent variables) in the experiences of cybervictimization, cyberperpetration, and adverse psychological effects (dependent variables). Logistic regression models were constructed for each of the dependent variables including the independent variables mentioned above. More than 50 percent of the sample were victims of cyberbullying. Females and the LGBTIQ+ Community were at greater risk of being cybervictims and suffer adverse psychological effects. A total of 22.8 percent of the students reported having been victims and 26.5 percent perpetrators of cyberbullying for the first time during the COVID-19 pandemic, but no other major differences were observed. These findings point out that cyberbullying must be prioritized in public policy as part of an overall strategy for combating violence in childhood and adolescence, as well as gender-based and discriminatory violence.