It is perhaps no accident that a trove of sensitive US documents reportedly ended up in a chat room on Discord, one of a small group of platforms that are widely seen by experts as natural haunts for online renegades. While the authenticity of the material has yet to be confirmed by officials, The Washington Post reported the embarrassing leak of secrets about the war in Ukraine came from a Discord user nicknamed "OG", a gun enthusiast who works on a US military base. The New York Times said a "trail of digital evidence" led to a 21-year-old national guardsman...