For a few seconds during Blackpink member Jennie’s headline set at Tokyo’s Summer Sonic festival last month, it looked like something had come undone. She turned away from the crowd, adjusted herself and then, the moment was gone. But online, the clip never disappeared – and more than 10 million views later, it has become the latest test of South Korea’s fight against AI-enabled sexual abuse. Fans were quick to cry deepfake, dissecting the footage frame by frame for signs of possible AI...