A 15-year-old high school student in Japan has been arrested after allegedly using ChatGPT to help create a program that triggered a major cyberattack on Bandai Namco Filmworks' Bandai Channel streaming service, forcing the cancellation of more than 46,000 user accounts.
According to reports, which quoted the Tokyo Metropolitan Police, the teenager is suspected of fraudulent obstruction of business after allegedly exploiting a vulnerability in the anime streaming platform in November 2025. Investigators claim he used ChatGPT to assist in writing software that automated unauthorized access to member accounts, leading to the cancellation of 46,812 subscriptions.