The ones identified are the ones that are a source in Tachiyomi. Mangago isn't a source in Tachiyomi (it doesn't want to be) so it's a bit safe for now.
To fight Tachiyomi from stealing Mangago bandwidth, a while back around the time of its release, Mangago added an image rendering trick on each manga/manhwa panel uploaded, so Tachiyomi couldn't s......
