By KENJI IZAWA/ Staff Writer
June 30, 2026 at 18:08 JST
The logo of Aflac Life Insurance Japan Ltd. from the company’s website (Asahi Shimbun file photo)
Aflac Life Insurance Japan Ltd.’s policyholder portal had been hacked, exposing the personal data of about 4.38 million customers, the company announced on June 30.
About 230,000 of the records included bank account numbers used for premium payments.
The company said there has been no confirmed misuse of the data.
The data breach affected the service “Aflac Yoriso Net,” which lets customers check contract details and make changes.
In addition to bank account numbers, the leaks included names, dates of birth, gender, phone numbers, policy numbers, and coverage details.
My Number, credit card numbers, and health status at contract time were not included.
Additionally, about 40,000 insurance agencies’ addresses, phone numbers and representative names were leaked.
Aflac detected unusual activity on its site on June 25. Investigations found that multiple unauthorized accesses began about 10 days earlier.
As a result, parts of the policyholder portal and internal systems were taken offline. Claims are being taken by phone and other channels.
“We deeply apologize for the substantial trouble and concern caused to affected customers and all related parties,” Aflac said in a statement. “We will promptly determine the cause and implement measures to prevent a recurrence.”
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