HackingHealthcareHealthcareCustomer Data InvolvedTargetedIdentity (basic)Government IDFinancial accountHealth (basic)PHIMediumContained

Beverly Hills Oncology Medical Group

bd_1f678699b9148386 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Oct 13, 2025

Filed

Oct 31, 2025

To disclose

18 days

Affected

4state residents only

Linked

6 filings

Confidence

66%

Full breach record for Beverly Hills Oncology Medical Group →

Beverly Hills Oncology Medical Group reported an external system breach (hacking) occurring between Feb 7-11, 2025. Discovered Oct 13, 2025. 4 Maine residents affected. Data included names, SSNs, driver's licenses, financial info, and PHI. Notification sent Oct 31, 2025 with credit monitoring offered.

J jump to incidentP pin to compareR raw source

Maine clockDiscovered Oct 13, 2025 → Filed with AG Oct 31, 202518d ✓ ME AG ≤30d18 days discovery → filing

⚠ unattributedNo provenance was recorded for this discovery date and it matches no other date on the record. It may be correct, but it is not independently grounded.

Incident timeline

undetected · 248 days

discovery → filing · 18 days

Feb 7, 2025

Begins

Oct 13, 2025

Discovered

Oct 31, 2025

Filed

vs. sector median

9 wks faster

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

California State AGbd_07c86b24e4685d332025-10-31Verified
HHS OCRbd_c525fe23897b88ff2025-10-31Verified
Nebraska State AGbd_c76f0e32b50220eb2025-10-31Verified
Massachusetts State AGbd_0bfad3246bd37ce32025-11-03 · +3dVerified

Show 1 more filing ↓up to 6d gap

New Hampshire State AGbd_28ed7ba59e9d002e2025-11-06 · +6dVerified

Name: MCDONALD HOPKINS LLC
norm: mcdonald hopkins
Industry: Legal Services

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

Discovered: Oct 13, 2025
Breach occurred: Feb 7, 2025 – Feb 11, 2025
Undetected for: 248 daysoccurrence → discovery
Materiality determined: —
Notification sent: Oct 31, 2025
Affected individuals: 4state-resident count only
Data types: Identity (basic)Government IDFinancial accountHealth (basic)PHI
Data elements: Social Security number
Attack vector: Unauthorized Access
MITRE ATT&CK: T1190 Exploit Public-Facing Application
Threat actor: External
Regulator citations: Filed notification with Maine Attorney General
Initial access: exploit_public_facing

During the incident: Launched an investigation in consultation with outside cybersecurity professionals
Offering a complimentary 12-month membership in Epiq - Privacy Solutions ID
Changes made: Continually evaluate and modify practices and internal controls to enhance the security and privacy of your information
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 18 days(18 days from discovery to filing)
Compliance flags: ME AG ≤30d · 18d
Discovery-date grounding: unattributedNo provenance was recorded for this discovery date and it matches no other date on the record. It may be correct, but it is not independently grounded.
Clock breakdown: Statute Window Elapsed Threshold Status
Maine
Discovered: Oct 13, 2025
→ Filed with AG: Oct 31, 2025
18d 30 days ME AG ≤30d

Statute	Window	Elapsed	Threshold	Status
Maine	Discovered: Oct 13, 2025 → Filed with AG: Oct 31, 2025	18d	30 days	ME AG ≤30d

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 6 filings · 5 states

View merged incident ↗

California State AGOct 31 · first

HHS OCROct 31 · first

Nebraska State AGOct 31 · first

Maine State AGOct 31 · first · this page

Massachusetts State AG+3d

New Hampshire State AG+6d

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://www.maine.gov/agviewer/content/ag/985235c7-cb95-4be2-8792-a1252b4f8318/d1627923-c6ec-4ca6-95df-437e27f0cffa.html
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Oct 31, 2025
Raw hash: 617d8841fcfcd8119c1173bf814f8fff6da2d97fbc113eeb08a6d420de523918

Linked disclosures

Regulatory filings (5) · sorted by filing gap

Reporting entityMCDONALD HOPKINS LLC

Victim entityBeverly Hills Oncology Medical Group

Incidentdiscovered Oct 13, 2025

Stated responseLaunched an investigation in consultation with outside cybersecurity professionals

ComplianceME AG ≤30d

Extraction provenanceno artifact recorded

Source provenancewww.maine.gov