Health-guidance contractor says an employee entered insured members' names and disease information into an unauthorised external generative AI service
A local-government employees' mutual aid association said in a notice dated 4 September 2026 that RIZAP, the company it contracts for specific health guidance, had reported that on 20 August 2026 it emerged that a RIZAP staff member, during data-extraction work, had entered data containing personal information into an external generative AI service that RIZAP did not permit. The association says 726 of its members across 14 branches are covered and lists the data as membership numbers, email addresses, names, dates of birth, sex, some addresses and phone numbers, the type of health guidance and, for members with them, high blood pressure, diabetes or dyslipidaemia. The IHI group health insurance society reported 210 of its members in a 2 September notice that, according to a security news site, names OpenAI as the provider, says the matter came to light through the employee's own report, and says OpenAI answered on 1 September that the data had not been used for model training. RIZAP's own release, as described in an ITmedia column, says the information was uploaded by mistake to a generative AI service the employee used privately, and that the company confirmed no possibility of viewing by third parties other than the service operator or of use in training. Whether the provider's staff could view the data was still being checked when the insurers published.
AI involvement reported · Causal attribution supported · 3 sources · Added 12/10/2026