Middle-aged and older adults likely remember bullying as confined to school corridors or playgrounds. For today’s adolescents, however, bullying no longer ends when the final school bell rings. Supercharged by smartphones and social media, it follows young people into their homes and can reach hundreds of peers within seconds. Cyberbullying — defined as the intentional and repeated use of digital technologies to harm others — has become one of the fastest-growing threats to adolescents’ well-being in Korea. According to a 2025 national cyber violence survey, 42.3 percent of Korean adolescents from fourth grade to high school reported having been involved in cyberviolence as victims, perpetrators or both. Among those affected, the most commonly identified perpetrators were strangers (51.9 percent) and friends (33.6 percent). Disturbingly, 42.9 percent of those who engaged in cyberviolence perceived their actions went unnoticed by others. While retaliation, stress, amusement and intolerance of difference were commonly cited motives, some reported no particular reason at all. Thi