Overview
- Tokyo police arrested a 15-year-old from Saitama on July 4 for an alleged November 4, 2025 attack that sent fraudulent commands to Bandai Channel and led to the unauthorized cancellation of 46,812 subscription accounts.
- Investigators say the suspect wrote the attack program himself and told police he used ChatGPT to finish or translate code so the tool could run in a different programming language.
- Bandai Namco Filmworks reported the incident to police, individually notified affected customers, advised vigilance against phishing, offered refunds, and said it has found no evidence that exported data was published or misused.
- Separately, police arrested an 18-year-old on July 9 in a related probe of AI‑aided intrusions that extracted about 7.24 million Kaikatsu Club user records in January 2025, and authorities are pursuing co-conspirators and digital forensics.
- Reports say self‑taught teenagers used social platforms to coordinate, changed IP addresses to evade blocks, and relied on code‑generating AI—raising questions about how easy access to generative tools changes cyber risk and law enforcement work.