On Christmas Eve, Elon Musk’s X rolled out an in-app tool that lets users alter other people’s photos and post the results directly in reply. With minimal safeguards, it quickly became a pipeline for sexualized, non-consensual deepfakes, including imagery involving minors, delivered straight into victims’ notifications. Renée DiResta, Hany Farid, and Casey Newton join Kara to dig into the scale…