Social EngineeringHealthcareHealthcarePhishingStolen CredentialsCustomer Data InvolvedDelayed DiscoveryPHIHealth (basic)Identity (basic)LowContained

Orange County Radiation Oncology Center

bd_040721a73900a648 · schema v1 · pii pii-v1

Severity

Low

Discovered

Jun 13, 2025

Filed

Jul 15, 2025

To disclose

5 weeks

Affected

Not disclosed

Confidence

65%

Full breach record for Orange County Radiation Oncology Center →2 incidents on file

Orange County Radiation Oncology Medical Group experienced an email phishing incident resulting in unauthorized access to patient information in a small number of email and SharePoint accounts between December 13, 2024, and December 16, 2024. The organization became aware of the incident on June 13, 2025. Affected data includes names and other patient health information. The organization is providing credit monitoring and additional cybersecurity training to staff.

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Incident timeline

undetected · 182 days

discovery → filing · 5 weeks / 32 days

Dec 13, 2024

Begins

Jun 13, 2025

Discovered

Jul 15, 2025

Filed

vs. sector median

8 wks faster

Tracked as a single-filing incident — the only disclosure on record for this event so far.ConfirmedView incident

Name: Orange County Radiation Oncology Center
norm: orange county radiation oncology center
Domain: ocroc.net

Name: Orange County Radiation Oncology Center
norm: orange county radiation oncology center
Domain: ocroc.net
Industry: Healthcarellm

Discovered: Jun 13, 2025
Breach occurred: Dec 13, 2024 – Dec 16, 2024
Undetected for: 182 daysoccurrence → discovery
Materiality determined: —
Notification sent: —
Affected individuals: Not disclosed
Data types: PHIHealth (basic)Identity (basic)
Attack vector: Phishing
MITRE ATT&CK: T1566.002 Spearphishing LinkT1078 Valid AccountsT1114 Email Collection
Threat actor: External
Initial access: phishing_link

During the incident: Measures were taken immediately in response
A thorough investigation was conducted to determine what occurred
A review was performed of the emails, attachments, and SharePoint files that may have been accessed
Changes made: Additional cybersecurity training is being provided to staff
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 5 weeks(32 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Evidence ladder

Leak-site claim

Attacker assertion only. Establishes: claim date, group, alleged victim.

Press / market report

Unlocks: incident narrative, operational impact. Still no compliance clock.

State AG / regulator filingThis record

Unlocks: discovery date, data types, affected count, compliance clock.

SEC 8-K / victim statement

Unlocks: materiality, stated response, full audit trail. Ceiling removed.

Source URL: https://oag.ca.gov/ecrime/databreach/reports/sb24-605500
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Jul 15, 2025
Raw hash: 7ed3c8d048c8585bca2ce820563fcd0229d88d1ea44b25d60e417cc2c228dc7c

Reporting entityOrange County Radiation Oncology Center

Victim entityOrange County Radiation Oncology Center

Incidentdiscovered Jun 13, 2025

Stated responseMeasures were taken immediately in response

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenanceoag.ca.gov