AT&T Group Health Plan
Disclosed Mar 23, 201511 years ago50,000 affectedConfirmed
Health Care Service Corporation, a business associate (BA) of AT&T Group Health Plan, the covered entity (CE), stored the CE’s electronic protected health information (ePHI) on computer servers belonging to its parent corporation, Anthem, Inc. Anthem experienced a series of cyberattacks which exposed the electronic protected health information (ePHI) of almost 79 million people, affecting 50,000 individuals who received health insurance from the CE. The types of ePHI involved in the breach included names, social security numbers, medical identification numbers, addresses, dates of birth, email addresses, and employment information. OCR reviewed the BA agreement and determined that it appeared to comply with the requirements of the HIPAA Privacy and Security Rules. OCR opened a separate review of Anthem, which resulted in Anthem agreeing to pay a monetary settlement and undertaking a robust corrective action plan to comply with the HIPAA Rules.
What is known
| People affected | 50,000 (as reported to HHS) |
|---|---|
| Disclosed | Mar 23, 2015 |
| Attack | Hacking |
| Data exposed | Names, Health |
| Sector | Insurance · US |
| Status | Confirmed |
Sources
| Source | |
|---|---|
| HHS OCR breach report (archive, resolved): AT&T Group Health Plan (Health Plan, TX)ocrportal.hhs.gov · Official notice | Official notice |
Notices filed
| Where | Filed | People |
|---|---|---|
| HHS archivetotal | Mar 23, 2015 | 50,000 |
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.