MalwareHealthcareHealthcareRansomwareData EncryptedData ExfiltratedCustomer Data InvolvedPIIIdentity (basic)LowContained

Highlands Oncology Group PA

bd_6c70c58a48445ed3 · schema v1 · pii pii-v2

Severity

Low

Discovered

Jun 2, 2025

Filed

Aug 1, 2025

To disclose

—

Affected

Not disclosed

Linked

7 filings

Confidence

66%

Full breach record for Highlands Oncology Group PA →2 incidents on file

Highlands Oncology Group PA disclosed a ransomware incident discovered on June 2, 2025, affecting systems between January 21 and June 2, 2025. An unauthorized third party encrypted files and potentially exfiltrated personal information. The company notified law enforcement, engaged forensic investigators, and offered one year of Experian IdentityWorks credit monitoring to affected individuals.

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Incident timeline

undetected · 132 days

Jan 21, 2025

Begins

Jun 2, 2025

Discovered

Aug 1, 2025

Filed

This filing is one of 7 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (6) · sorted by filing gap

Massachusetts State AGbd_19148216a0083bc02025-08-01Verified
HHS OCRbd_2e1c0c273573a6f22025-08-01Verified
Illinois State AGbd_448e01adc1621fde2025-08-01Verified
New Hampshire State AGbd_dbb625888ec67b012025-08-01Verified

Show 2 more filings ↓up to 3d gap

Maine State AGbd_f3067e691ab1bd552025-08-01Verified
Texas State AGbd_2ae199a4db46ef0e2025-08-04 · +3dVerified

Name: Highlands Oncology Group PA
norm: highlands oncology

Name: Highlands Oncology Group PA
norm: highlands oncology
Industry: Healthcarellm

Discovered: Jun 2, 2025
Breach occurred: Jan 21, 2025 – Jun 2, 2025
Undetected for: 132 daysoccurrence → discovery
Materiality determined: —
Notification sent: —
Affected individuals: Not disclosed
Data types: PIIIdentity (basic)
Attack vector: Ransomware
MITRE ATT&CK: T1486 Data Encrypted for ImpactT1041 Exfiltration Over C2 Channel
Threat actor: ExternalFinancial

During the incident: Began an internal investigation
Worked to secure our systems
Notified law enforcement
Engaged a forensic security firm to assist with our investigation
Changes made: Enhancing our technical security measures
Source: Quoted from the filing itself, not independently verified.

Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 7 filings · 7 states

View merged incident ↗

Massachusetts State AGAug 1 · first

HHS OCRAug 1 · first

Illinois State AGAug 1 · first

New Hampshire State AGAug 1 · first

Maine State AGAug 1 · first

Nebraska State AGAug 1 · first · this page

Texas State AG+3d

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://nebraska.gov/ago/data-breach/documents/b7f66e4b-89b5-46c0-88ae-440bc94711f6.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Aug 1, 2025
Raw hash: 716a2a9af464cb6135b2f4f593eeb7aa0d221aa1d9de2fe3bd97752c3599a984

Linked disclosures

Regulatory filings (6) · sorted by filing gap

Reporting entityHighlands Oncology Group PA

Victim entityHighlands Oncology Group PA

Incidentdiscovered Jun 2, 2025

Stated responseBegan an internal investigation

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancenebraska.gov