HackingHealthcareHealthcareData ExfiltratedCustomer Data InvolvedDelayed DiscoveryGovernment IDIdentity (basic)Financial accountHealth (basic)PHIMediumActive

Beverly Hills Oncology Medical Group

bd_28ed7ba59e9d002e · schema v1 · pii pii-v1

Severity

Medium

Discovered

Feb 11, 2025

Filed

Nov 6, 2025

To disclose

38 weeks

Affected

5state residents only

Linked

6 filings

Confidence

64%

Full breach record for Beverly Hills Oncology Medical Group →

Beverly Hills Oncology Medical Group notified the New Hampshire Attorney General's Office on November 6, 2025, regarding unauthorized network access occurring between February 7 and 11, 2025. The incident potentially affected 5 New Hampshire residents, exposing personal information including SSNs, driver's licenses, financial account data, and protected health information (PHI). The organization engaged outside cybersecurity professionals for investigation and is offering credit monitoring services to affected individuals. The investigation concluded on October 13, 2025.

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Incident timeline

undetected · 4 days

discovery → filing · 38 weeks / 268 days

Feb 7, 2025

Begins

Feb 11, 2025

Discovered

Nov 6, 2025

Filed

vs. sector median

+26 wks slower

This filing is one of 6 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (5) · sorted by filing gap

Massachusetts State AGbd_0bfad3246bd37ce32025-11-03 · +3dVerified
California State AGbd_07c86b24e4685d332025-10-31 · +6dVerified
Maine State AGbd_1f678699b91483862025-10-31 · +6dVerified
HHS OCRbd_c525fe23897b88ff2025-10-31 · +6dVerified

Show 1 more filing ↓up to 6d gap

Nebraska State AGbd_c76f0e32b50220eb2025-10-31 · +6dVerified

Name: MCDONALD HOPKINS LLC
norm: mcdonald hopkins

Name: Beverly Hills Oncology Medical Group
norm: beverly hills oncology medical
Industry: Healthcarellm

Discovered: Feb 11, 2025
Breach occurred: Feb 7, 2025 – Feb 11, 2025
Undetected for: 4 daysoccurrence → discovery
Materiality determined: —
Notification sent: Oct 31, 2025
Affected individuals: 5state-resident count only
Data types: Government IDIdentity (basic)Financial accountHealth (basic)PHI
Data elements: Social Security numberMedical information
Attack vector: Unauthorized Access
MITRE ATT&CK: T1119 Automated CollectionT1041 Exfiltration Over C2 Channel
Threat actor: External

During the incident: Launched an investigation in consultation with outside cybersecurity professionals
Providing the affected residents with written notification
Offering the affected residents complimentary memberships with a credit monitoring service
Advising the affected residents about the process for placing fraud alerts and/or security freezes on their credit files
Changes made: Continually evaluates and modifies its practices and internal controls to enhance the security and privacy of personal information
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 38 weeks(268 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 6 filings · 5 states

View merged incident ↗

California State AGOct 31 · first

Maine State AGOct 31 · first

HHS OCROct 31 · first

Nebraska State AGOct 31 · first

Massachusetts State AG+3d

New Hampshire State AG+6d · this page

Pattern: first filing Oct 31 (CA), last Nov 6 (NH) — a 6-day rolling notification. Rolling spreads often mean counsel is filing as thresholds trip per state. Why this link?

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://mm.nh.gov/files/uploads/doj/remote-docs/beverly-hills-oncology-medical-group-20251106.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Nov 6, 2025
Raw hash: 507e853b2b7e6a83dcf37799db987bcabdb190b02df94821cf785e9756763f9e

Linked disclosures

Regulatory filings (5) · sorted by filing gap

Reporting entityMCDONALD HOPKINS LLC

Victim entityBeverly Hills Oncology Medical Group

Incidentdiscovered Feb 11, 2025

Stated responseLaunched an investigation in consultation with outside cybersecurity professionals

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancemm.nh.gov