Multiple reports say Aflac Japan suffers a data breach that affects more than 4 million customers. According to SecurityWeek, attackers gain access to the company’s policyholder portal and use it multiple times between June 15 and June 25. The reporting indicates that the incident impacts 4.38 million individuals, describing the scale of exposure related to the portal.
The Japan Times adds that the breach involves additional compromised information for a subset of customers. It states that for around 230,000 customers, data tied to premium payment accounts is also affected. The reports do not provide further specifics in the provided excerpts about the type of other personal information involved, how the attackers accessed the portal, or whether any financial transactions occurred.
Together, the sources indicate an intrusion centered on Aflac Japan’s policyholder portal over a defined period in June, with a broader set of customers impacted and a smaller group seeing more sensitive account-related information included in the exposed data.
