Overview
- The Metropolitan Police Department arrested the Osaka high school student on suspicion of unauthorized computer access and fraudulent obstruction of business.
- Police say he accessed Kaikatsu Frontier’s app server from Jan. 18 to 20 and sent repeated commands that forced some app functions to halt.
- Investigative sources report he obtained about 7.25 million sets of member data, consistent with Aoki Holdings’ January notice that roughly 7.29 million records might have been compromised.
- Authorities say he created the extraction program with assistance from ChatGPT, reportedly using prompts to learn bypass techniques and troubleshoot errors.
- No confirmed misuse of the leaked information has been identified as the inquiry continues, and the teen was previously arrested in November in a separate credit card case.