Previous research suggests a link between Attention Deficit Hyperactivity Disorder (ADHD) and criminal behaviour. The present study explored the relationship between ADHD symptoms and cyberdeviance. 170 participants completed an online questionnaire measuring computer crime behaviour, ADHD symptoms, and impulsivity. A statistically significant relationship was found between Cyberdeviance, ADHD symptoms and impulsivity. Regression analysis showed that hyperactivity and gender (male) could predict self-reported computer crime. Our findings suggest a role of individual differences in cybercrime, thus leading to the development of potential interventions and preventive mechanisms.