Highmark
Disclosed Mar 11, 20221,073,316 affectedConfirmed
Highmark, the business associate (BA), reported that an employee was the subject of an email phishing scheme that compromised the protected health information (PHI) of 36,600 individuals. The PHI involved included names, addresses, birthdates, Social Security and drivers’ license numbers, diagnoses, medications, claims and financial information, and other treatment information. The BA notified HHS, affected individuals, and the media. In response to the incident, the BA provided complimentary credit monitoring services and implemented additional administrative, technical, and security safeguards. Staff were retrained on email security.
What is known
| People affected | 1,073,316 (as reported by the organization) |
|---|---|
| Disclosed | Mar 11, 2022 |
| Discovered | Dec 15, 2022 |
| Happened | Dec 13, 2022 |
| Attack | Phishing |
| Data exposed | NamesHealthInsurance |
| Sector | Healthcare · US |
| Status | Confirmed |
Sources
Notices filed
Other breaches at Highmark
History of this record
First seen 2026-09-25 (California AG), confirmed by California AG. Record counts are as reported. Not legal advice.