A 15-year-old high school student in Japan has been arrested for allegedly using ChatGPT to help develop software that was used in a cyberattack on Bandai Namco Filmworks' Bandai Channel streaming service.

The attack disrupted operations and forced the cancellation of more than 46,000 user accounts.According to reports citing 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 a program that automated unauthorised access to member accounts, resulting in the cancellation of 46,812 subscriptions, Straits Times reported. 

"I created the source code for the withdrawal process myself. Since the processing was taking a long time, I asked ChatGPT and completed it in a different programming language," he said. 

Police allege that on November 4, 2025, the teen sent fraudulent commands to Bandai Channel's servers, triggering the mass deregistration of thousands of accounts.

The attack disrupted the company's services beginning November 6, with full operations only resuming in December after repairs to its systems. Bandai Namco Filmworks later reported the incident to police.

Source:Ndtv