They were actually made at home! Consider using tricks like close-ups, unusual angles or black and white filters to make it especially anonymous.
Unless one had prior knowledge of the site's origins, he or she would only see an endless, ordinary stream of women -- some in lingerie or nothing at all -- holding their smart phones before their posed bodies to snap the perfect shot.
They've created this whole thing and then the minute it's released, it becomes this item of vulnerability.
I got them from revenge porn websites, Tumblr, Google Images, Reddit.