Where does the Orange County Radiation Oncology Medical Group case file come from?

Every entry is taken from the breach report Orange County Radiation Oncology Medical Group lodged with the California Attorney General. Nothing here is estimated.

Why do the incident date and the report date differ?

Companies usually investigate before they report. The gap between the two dates shows how long that took.

What does the records-affected figure count?

It is the number the company gave the state. It can cover residents of that state only, so the national total may be higher.

Does this case file change over time?

Yes. When a company files an update or a new state publishes its copy of the report, the dates and counts here are refreshed.

Case file

Case File: Orange County Radiation Oncology Medical Group Data Breach

This file collects the dated facts on record for the Orange County Radiation Oncology Medical Group incident. The state report is dated July 15, 2025. The incident itself is dated December 13, 2024.

Timeline

214 days separate the incident date from the date it was reported.

December 13, 2024Incident dateWhen the filing says the breach took place.
July 15, 2025Report filed in CaliforniaDate the notice was lodged with the California Attorney General.

Case facts

Filing state: California
Date reported: July 15, 2025
Incident date: December 13, 2024
Receiving office: California Attorney General

Case notes

Orange County Radiation Oncology Medical Group, based in California, filed a notice regarding a data breach that affected its systems. The incident was identified as occurring on December 13, 2024. Public records indicate the formal filing with regulators took place on July 15, 2025.

The specific information involved in this event was not detailed in the public filing. However, individuals whose personal information may have been compromised are being alerted, as is standard practice for such incidents.

At the time of the filing, the investigation into the full scope and impact of the breach was ongoing. Such investigations aim to determine the extent of the unauthorized access and to secure systems against future incidents.

Individuals who receive a notification letter from Orange County Radiation Oncology Medical Group should carefully review the information provided. It is important to monitor financial accounts and credit reports for any suspicious activity or unauthorized transactions.

As a general precaution following any data security incident, it is advisable to consider placing a fraud alert or a security freeze on your credit files. These steps can help prevent the misuse of your personal information. Regularly changing passwords for online accounts and enabling multi-factor authentication where available also adds layers of security.

Questions about this case file

Where does the Orange County Radiation Oncology Medical Group case file come from?: Every entry is taken from the breach report Orange County Radiation Oncology Medical Group lodged with the California Attorney General. Nothing here is estimated.
Why do the incident date and the report date differ?: Companies usually investigate before they report. The gap between the two dates shows how long that took.
What does the records-affected figure count?: It is the number the company gave the state. It can cover residents of that state only, so the national total may be higher.
Does this case file change over time?: Yes. When a company files an update or a new state publishes its copy of the report, the dates and counts here are refreshed.

California data breaches

Filing source: California Attorney General

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Timeline

Case facts

Case notes

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