HackingHealthcareOtherHealthcareData ExfiltratedTargetedIdentity (basic)Government IDHealth (basic)Financial accountMediumActive

Harbor

bd_2f540137b6d03267 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Aug 1, 2025

Filed

Oct 24, 2025

To disclose

12 weeks

Affected

3state residents only

Linked

8 filings

Confidence

66%

Full breach record for Harbor →4 incidents on file

Harbor, a healthcare provider in Toledo, OH, notified the NH AG of a data event affecting 3 NH residents. Unauthorized access occurred July 25–Aug 1, 2025; detected Aug 1, 2025. Data included PII (SSN, DL), PHI, and financial info. Notices sent Sept 30, 2025. Investigation ongoing.

J jump to incidentP pin to compareR raw source

Incident timeline

undetected · 7 days

discovery → filing · 12 weeks / 84 days

Jul 25, 2025

Begins

Aug 1, 2025

Discovered

Oct 24, 2025

Filed

vs. sector median

on median

This filing is one of 8 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (7) · sorted by filing gap

Nebraska State AGbd_02bb0b2f44a761b92025-10-24Verified
Massachusetts State AGbd_18438c745531b7f22025-10-24Verified
Maine State AGbd_2553d8403fd8364b2025-10-24Verified
Vermont State AGbd_9a4998fa85b306a62025-10-24Verified

Show 3 more filings ↓up to 24d gap

Montana State AGbd_d4a34d6895ce79792025-10-24Verified
Illinois State AGbd_cde758c48c991ef32025-10-01 · +23dCandidate
HHS OCRbd_7bfe7b23f5f210c72025-09-30 · +24dVerified by operator

Name: Mullen Coughlin LLC
norm: mullen coughlin

Name: Harbor
norm: harbor
Domain: goharbor.io
Industry: HealthcarellmOtherllm

Discovered: Aug 1, 2025
Breach occurred: Jul 25, 2025 – Aug 1, 2025
Undetected for: 7 daysoccurrence → discovery
Materiality determined: —
Notification sent: Sep 30, 2025
Affected individuals: 3state-resident count only
Data types: Identity (basic)Government IDHealth (basic)Financial account
Data elements: Social Security numberDate of birthMedical information
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid AccountsT1119 Automated Collection
Threat actor: External
Regulator citations: Notified U.S. Department of Health and Human Services pursuant to HIPAAProviding written notice to relevant state and federal regulatorsNotifying the three major credit reporting agencies, Equifax, Experian, and TransUnion

During the incident: Launched an investigation to determine the nature and scope of the activity
Conducted a comprehensive review of the files involved
Moved quickly to investigate and respond to the incident
Assess the security of Harbor systems
Identify potentially affected individuals
Working to implement additional safeguards and training to its employees
Providing access to credit monitoring services through Epiq
Providing impacted individuals with guidance on how to better protect against identity theft and fraud
Providing written notice of this incident to relevant state and federal regulators
Notifying the U.S. Department of Health and Human Services pursuant to the Health Insurance Portability and Accountability Act (HIPAA)
Changes made: Implement additional safeguards and training to its employees
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 12 weeks(84 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 8 filings · 8 states

View merged incident ↗

HHS OCRSep 30 · first

Illinois State AG+1d

Nebraska State AG+24d

Massachusetts State AG+24d

Maine State AG+24d

Vermont State AG+24d

Montana State AG+24d

New Hampshire State AG+24d · this page

Pattern: first filing Sep 30 (OH), last Oct 24 (NH) — a 24-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/harbor-20251024.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Oct 24, 2025
Raw hash: f765569361959b20d4d44bc039a0de83576366b4c3adc885e3115ca057ac0300

Linked disclosures

Regulatory filings (7) · sorted by filing gap

Reporting entityMullen Coughlin LLC

Victim entityHarbor

Incidentdiscovered Aug 1, 2025

Stated responseLaunched an investigation to determine the nature and scope of the activity

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancemm.nh.gov