A 15-year-old student residing near Tokyo has been arrested on suspicion of carrying out a cyberattack that severely disrupted **Bandai Channel**, a subscription-based anime streaming service. The Tokyo Metropolitan Police Department stated that the unnamed individual exploited a flaw in the service's servers, leading to the fraudulent cancellation of more than 46,000 user subscriptions. Investigators revealed that the teenager identified the vulnerability by analyzing **Bandai Channel**'s network traffic. He then allegedly used **ChatGPT** to develop a malicious program designed to automate the attacks. In November 2025, this program reportedly sent fraudulent data to the company's servers, resulting in thousands of account cancellations and forcing a temporary suspension of the service. The student's initial arrest in June was for logging into the platform using another user's account. Subsequent police investigation linked him to the broader cyberattack. He has admitted to the allegations, stating he held no grudge against the company and was motivated by an interest in programming and network analysis, skills he taught himself. **Bandai Channel**'s operator confirmed that the disruption necessitated a platform suspension for over a month to repair systems and process refunds for affected subscribers. The company initially blocked the suspect's access, but he reportedly circumvented these measures by repeatedly changing his IP address to continue unauthorized cancellations. The incident was reported to the police in November, with investigators identifying the suspect through a detailed analysis of communication records. **Bandai Channel** is owned by a major Japanese entertainment company known for publishing world-renowned video game franchises. In 2022, the parent company disclosed a separate cyberattack that potentially exposed customer information, an incident later claimed by the **AlphV** ransomware group.