The study of websites displaying methods of both physical self-harm and suicide has become an important aspect of deliberate self-injury and suicide research. However, little is known about contextual factors related to entering such sites. Using data from 3,567 respondents aged 15-30 in the US, UK, Germany, and Finland, we found that experiences of victimization are associated with entering pro-self-harm sites and pro-suicide sites. Also, the victimization context had relevance, as online victimization was particularly related to pro-self-harm behavior. The findings suggest a need to organize more specific online support for the victims of violence and online aggression.