BreachCensus

Highlands Oncology Group PA

healthcareHealthcareUnited States of America

Highlands Oncology Group PA is a healthcare organisation in United States of America. It appears on the HHS OCR breach portal and the Massachusetts Attorney General breach-notification register with 1 confirmed incident; the most recent notice was filed on August 1, 2025.

Data as of August 31, 2026.

Confirmed incident

Filed in AR and MA — Hacking/IT Incident

The same incident was filed separately with 2 jurisdictions within a few days of each other (AR and MA) — shown here as one incident.

Disclosed
August 1, 2025
Records affected
111,766

Timeline

  1. August 1, 2025
    Reported to regulator Regulator

    MA AG breach notification: 8 Massachusetts residents affected

    source
  2. August 1, 2025
    Reported to regulator Regulator

    HHS OCR breach portal listing: Hacking/IT Incident; Network Server

    source
What a Massachusetts notice means

Required under M.G.L. c. 93H. Notice to the Attorney General is required for a breach affecting any number of Massachusetts residents' personal information -- the statute sets no minimum count.

Note: the count is Massachusetts residents only, not a total.

Massachusetts breach-notification register ↗