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Regulator-posted notice

Breach notice filed by Highmark, Inc. (February 2023)

Organization named: Highmark Provisional: identity as filed, not yet matched to the directory
Type as the source lists it: Hacking/IT Incident

What the sources say

HHS OCR breach portal (HIPAA breaches affecting 500 or more individuals) Primary notice

Posted on the HHS Office for Civil Rights breach portal with a submission date of Feb. 10, 2023.

Organization as reported
Highmark, Inc., PA
Entity type as reported
Health Plan
Category as reported
Hacking/IT Incident
Location of information as reported
Email
Submission date
Feb. 10, 2023
Observed by BreachRecords
2026-10-18 16:15 UTC (revision 10911, row:2050)
Archived copy
Held in the private archive (provenance)

Highmark, the covered entity (CE), reported that an employee was subject to an email phishing scheme that effected the protected health information (PHI) of 239,039 individuals. The PHI involved included names, dates of birth, driver’s license numbers, addresses, Social Security numbers, claims and financial information, diagnoses, medications, and other treatment information. The CE notified HHS, affected individuals, the media, and posted substitute notice on its website. In its mitigation efforts, the CE implemented additional administrative, technical, and security safeguards to better protect its sensitive data. All staff were provided additional cybersecurity training including instruction on proper identification of fraudulent email communications.

The source's own words, from the revision above.

Figures, per source

  • 239,039 individuals affected (total reported), according to the HHS Office for Civil Rights breach portal, source date Feb. 10, 2023, revision observed 2026-10-18.

Each figure is one source's figure with the basis that source gave. Figures from different sources are shown side by side and are not added, averaged or chosen between.

Timeline

Source dates are the dates the sources give. Observation dates are when BreachRecords recorded each revision.

  • Submission date (HHS Office for Civil Rights breach portal)
  • Observed by BreachRecords (revision 10911)
  • Approved by a reviewer

Organizations linked by a reviewer

  • Highmark Named as the covered entity Provisional: identity as filed, not yet matched to the directory Linked 2026-10-19, method provisional.

Archived evidence

  • 3dbc27dd5742e041cc1e7fe18cc669e2901fbd3b86b7007ed27948ff4d406e1f
    text/csv, 5,530,996 bytes, retrieved from HHS Office for Civil Rights breach portal, 2026-10-18 16:15 UTC. Archived privately · Provenance · Source page

Records reflect source filings as of the dates shown. BreachRecords is not a regulator.

Request a correction

A record that disagrees with its source, names the wrong organization or duplicates another is corrected after review. This form is about Breach notice filed by Highmark, Inc. (February 2023). We acknowledge every request within two business days. We reply by email.

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