Teijin Automotive Technologies Welfare Plan
Disclosed Feb 6, 20233 years ago25,464 affectedConfirmed
The covered entity (CE), Teijin Automotive Technologies Welfare Plan, reported that it experienced a ransomware incident that affected the protected health information (PHI) of 25,464 individuals. The PHI involved included names, addresses, dates of birth, Social Security numbers, and financial and health insurance information. The CE notified HHS, affected individuals, the media, and posted substitute notice on its website. In response to the breach, the CE offered free credit monitoring services and implemented additional administrative, technical, and security safeguards. The CE retrained its staff on the requirements to protect and secure PHI. During the investigation, OCR provided the CE with technical assistance regarding the HIPAA Privacy and Security Rules.
What is known
| People affected | 25,464 (as reported to HHS) |
|---|---|
| Disclosed | Feb 6, 2023 |
| Attack | Hacking |
| Data exposed | Names, Health |
| Sector | Insurance · US |
| Status | Confirmed |
Sources
| Source | |
|---|---|
| HHS OCR breach report (archive, resolved): Teijin Automotive Technologies Welfare Plan (Health Plan, MI)ocrportal.hhs.gov · Official notice | Official notice |
Notices filed
| Where | Filed | People |
|---|---|---|
| HHS archivetotal | Feb 6, 2023 | 25,464 |
History of this record
- 2026-09-25 · added · backfill source
First seen 2026-09-25 (HHS archive), confirmed by HHS OCR. Record counts are as reported. Not legal advice.
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