• August 2025 •

Highlands Oncology Group Data Breach

Last Updated on August 4, 2025

If you received a notice that your information was compromised, you may be able to start a class action to collect money for the harm you’ve suffered.

• Keep reading for more information

At A Glance

What's Going On?: Attorneys need to hear from people affected by the Highlands Oncology data breach as they investigate whether a class action lawsuit can be filed.
What You Can Do: If you got a letter or email about the data breach, fill out the form on this page to learn more about the investigation and how you can help.
Does This Cost Anything?: It costs nothing to get in touch or to talk to someone about your rights.
What Can I Get?: If filed and successful, a class action lawsuit could provide consumers with money for any harm resulting from the breach.

Highlands Oncology Data Breach: Lawsuit Investigation

Attorneys working with ClassAction.org are looking into whether a class action lawsuit can be filed in light of the Highlands Oncology data breach.

As part of their investigation, they need to hear from individuals who received a notice stating they were impacted.

Highlands Oncology Security Incident: What Happened?

Highlands Oncology Group PA recently reported a data breach affecting certain individuals' personal information. On June 2, 2025, Highlands Oncology discovered a cyberattack had rendered some files and systems inaccessible. An investigation was then launched into the Highlands Oncology Group data breach, which reportedly affects 113,575 individuals.

The investigation revealed that an unauthorized entity accessed Highlands Oncology's network between January 21 and June 2, 2025, encrypting some files and potentially acquiring sensitive data. The Medusa ransomware gang has reportedly claimed responsibility for the attack.

The compromised information may include names, dates of birth, Social Security numbers, driver's license/state ID numbers, passport numbers, financial details, medical treatment information, and health insurance data. On August 1, 2025, Highlands Oncology began notifying affected individuals by mail where possible.

Highlands Oncology Group specializes in radiation therapy and chemotherapy, with locations in Rogers, Fayetteville, Springdale, and Mountain Home, Arkansas.

What You Can Do After the Highlands Oncology Data Breach

If your information was exposed in the data breach, attorneys want to hear from you. You may be able to start a class action lawsuit to recover compensation for loss of privacy, time spent dealing with the breach, out-of-pocket costs, and more.

A successful case could also force Highlands Oncology to ensure it takes proper steps to protect the information it was entrusted with.

Got a notice about the Highlands Oncology data breach? Fill out the form on this page today.