Breach taxonomy
Summary
Aflac Life Insurance Japan discovered on June 25, 2026 that an unauthorized third party had unlawfully accessed certain of its systems between June 15 and June 25, 2026. Impacted files contain policy and coverage details, personal information, and bank account information. Aflac Japan suspended certain systems to contain the incident while continuing to serve policyholders, and notified the Japan FSA. The incident is limited to Japan; US systems were not accessed. Filed under Item 8.01; separate from Aflac's June 2025 US incident.
Tagging rationale
ThreatUnknown
Filing refers only to 'an unauthorized third-party' with no attribution -> UNKNOWN.
MethodsData Exfil
An unauthorized third party 'unlawfully accessed certain of Aflac Japan's systems' over a ten-day window with impacted files containing customer data -> DATA-EXFIL.