2026 Dai-ichi Life — HR system unauthorized access; ~120k current/former employees
Data compromised
~120,000 current (~50k) and former (~70k) employees/seconded staff: employee ID, name, address, phone, gender, department, job title/qualification, duties, supervisor name. Retiree window: back-office since 1967, sales staff since 2017. Customer/policyholder data: no unauthorized access confirmed.
Technical writeup
Verified company notice — Dai-ichi Life Group and Dai-ichi Life Insurance Oct 2, 2026 PDF: unauthorized access detected Sep 24 to the shared employee-facing HR system; personal information of ~120,000 current and former employees may have been viewed and exfiltrated. Fields: employee number, name, address, phone, gender, affiliation, position/qualification, duties, manager/supervisor name. Includes secondees to group companies (e.g. Dai-ichi Frontier Life, Dai-ichi Neo Life). Split ~50k current / ~70k retirees. Cause described only as third-party unauthorized access. No customer information access or secondary harm confirmed at notice time. recordsAffected 120000; companyConfirmed true.
Root cause
Unauthorized third-party access to shared employee HR system used by Dai-ichi Life Group and Dai-ichi Life Insurance, detected Sep 24, 2026.