Hannibal was the name of a network of far-right prepper groups and individuals operating in Germany, Austria, and Switzerland, which coordinated via the chat service Telegram in anticipation of the government's collapse on what they dubbed "Tag X" ("Day X"). Founded in 2015, the network was subject to an investigation by German authorities in 2017, at which time its founder ordered the deletion of the chat groups. However, government investigations into members of groups affiliated with "Hannibal" are ongoing.