Two neuroscientists have filed a class-action lawsuit against Apple in California federal court, accusing the company of using thousands of copyrighted books—sourced from illegal “shadow libraries”—to train its Apple Intelligence AI system. The suit, brought by SUNY professors Susana Martinez-Conde and Stephen Macknik, follows a similar case filed by a separate group of authors last month, intensifying scrutiny over how tech giants source training data for generative AI.