Breaches and incidentsBriefReported by a reputable outlet, citing the company
Aflac Japan: 4.38 million customers’ policy and bank data accessed
Aflac’s SEC filing (30 Jun) says a third party “unlawfully accessed certain of Aflac Japan’s systems” from 15 to 25 Jun 2026.
- Disclosed
What happened
- Aflac’s SEC filing (30 Jun) says a third party “unlawfully accessed certain of Aflac Japan’s systems” from 15 to 25 Jun 2026; files held policy and coverage details, personal information and bank account information. BleepingComputer’s update gives 4.38 million customers. US systems were not accessed.
- Root cause: not disclosed.
- No attacker named.
- Some systems suspended; outside experts engaged. Separate from Aflac’s 2025 US breach.
Sources
- https://www.bleepingcomputer.com/news/security/insurance-giant-aflac-discloses-data-breach-after-subsidiary-hack/
- https://www.cm-alliance.com/cybersecurity-blog/june-2026-biggest-cyber-attacks-data-breaches-ransomware-attacks
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