https://arstechnica.com/information-technology/2022/09/artist-finds-private-medical-record-photos-in-popular-ai-training-data-set/

Late last week, a California-based AI artist who goes by the name Lapine discovered private medical record photos taken by her doctor in 2013 referenced in the LAION-5B image set, which is a scrape of publicly available images on the web. AI researchers download a subset of that data to train AI image synthesis models such as Stable Diffusion and Google Imagen.

Lapine discovered her medical photos on a site called Have I Been Trained that lets artists see if their work is in the LAION-5B data set. Instead of doing a text search on the site, Lapine uploaded a recent photo of herself using the site's reverse image search feature. She was surprised to discover a set of two before-and-after medical photos of her face, which had only been authorized for private use by her doctor, as reflected in an authorization form Lapine tweeted and also provided to Ars.