Naming a cult on media is a taboo in Japan, for fear of retaliations and verbal abuses than as common courtesy.
There even used to be a P2P app called Perfect Dark, known in a... different... name early on, so as to make it 'immune to police prosecution'. Eventually the name changed to what it is, and stories of police working on it did start appearing. That was 2010s.
Oh no. I failed to include that part in the original comment. The logic was that the name(think “LordVoldemort.exe”) cannot be aired or published, so authorities cannot communicate arrests to the public, which makes it moot to do so, thereby shielding the users.
There even used to be a P2P app called Perfect Dark, known in a... different... name early on, so as to make it 'immune to police prosecution'. Eventually the name changed to what it is, and stories of police working on it did start appearing. That was 2010s.