Carl Maria MÖRCH et l’équipe du CRISE publient un article sur le lien entre le Darknet et le suicide dans la revue Journal of Affective Disorders.

The Darknet and suicide

Carl-Maria Mörch-Louis-Philippe Côté-Laurent Corthésy-Blondin-Léa Plourde-Léveillé-Luc Dargis-Brian Mishara – Journal of Affective Disorders – 2018



The Internet contains both public content (“Surface Web”), and private content (“Deep Web”) sometimes hosted on exclusive networks (“Darknets”) only accessible using dedicated software such as TOR (The Onion Router). This software makes it almost impossible to identify its users. Information media have reported on suicide-related aspects of Darknets, for example when poisons that can be used to kill oneself are offered for sale (Le Garff et al., 2016) when users discuss ways to kill oneself in anonymous forums (Ferrara, 2016; Franceschi-Bicchierai, 2015) and suicides that follow bullying or “doxing” (online divulgation without consent of intimate personal information) (Bartlett, 2015). Several recent studies have analyzed the nature of suicide content on the Surface Web, but to date, there have been no systematic investigations of suicidal content available on Darknets.


The object was to document the nature and accessibility of suicide-related information available on the TOR Darknet or via the TOR software.


Persons concerned with suicide prevention should conduct further investigations of pro-suicide forums that are accessible using TOR and their users, comparing them with the Surface Web. New strategies to prevent suicide may need to be developed for Darknets.

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