This had been news for a while now.
We've had reports on TV and net blogs about inappropriate videos known as "儿童邪典" which translates literally to "children evil compendium". These videos depicts inappropriate adult content using well-known children cartoon characters.
According to the reports, western video sharing and social media sites such as YouTube and Facebook also had faced similar problems, and "now these videos are penetrating the Chinese Internet".
So what I'm deadly curious about, is what had these types of videos been called in English, do they have a shorter name, when they're reported in English media, and if possible, the historical background of what happened.