DisclosureLens
MalwareHealthcareHealthcareRansomwareData EncryptedData ExfiltratedTargetedIdentity (basic)PIIHighContained

Highlands Oncology Group PA

bd_f3067e691ab1bd55 · schema v1 · pii pii-v1

Severity

High

Discovered

Jun 2, 2025

Filed

Aug 1, 2025

To disclose

9 weeks

Affected · nationwide

113,5756 in this filing

Linked

7 filings

Confidence

65%
Full breach record for Highlands Oncology Group PA →2 incidents on file

Highlands Oncology Group PA reported a cyber-attack discovered on June 2, 2025, affecting 113,575 individuals. Unauthorized access occurred between Jan 21 and June 2, 2025, resulting in file encryption and potential data acquisition. The incident involved external hacking and ransomware activity. Affected data included personal identifiers. The company engaged forensic investigators, notified law enforcement, and offered 12 months of credit monitoring.

Maine clockDiscovered Jun 2, 2025 → Filed with AG Aug 1, 202560d ⏱ ME AG >30d9 weeks discovery → filing
⚠ AG web formThe discovery date came from the AG web-form field, which is systematically later than the detection date stated in the letter. Treat the clock as indicative.

Incident timeline

undetected · 132 days
discovery → filing · 9 weeks / 60 days

Jan 21, 2025

Begins

Jun 2, 2025

Discovered

Aug 1, 2025

Filed

vs. sector median

4 wks faster

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

Show 2 more filings ↓up to 3d gap

Filing propagation · 7 filings · 7 states

View merged incident ↗
Massachusetts State AGAug 1 · first
HHS OCRAug 1 · first
Illinois State AGAug 1 · first
Nebraska State AGAug 1 · first
New Hampshire State AGAug 1 · first
Maine 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.