Aflac Japan, a subsidiary of the U.S. insurance company Aflac, reported a data breach that affected over 4 million customers. The breach, disclosed on June 29, 2026, involved unauthorized access to a server containing customer data.
The exposed information includes names, addresses, phone numbers, and policy numbers. Aflac stated that no financial or medical records were compromised in the incident.
The company has launched an investigation and is working with cybersecurity experts and law enforcement. Aflac is notifying affected customers and offering credit monitoring services.
This breach is one of the largest in Japan's insurance sector this year. Aflac Japan has apologized and pledged to strengthen its security measures.
