HackingTechnologyInformationData ExfiltratedCustomer Data InvolvedIdentity (basic)Health (basic)LowContained

The Longleaf Network LLC

bd_508fabb9c1d24d37 · schema v1 · pii pii-v1

Severity

Low

Discovered

May 29, 2024

Filed

Mar 3, 2025

To disclose

40 weeks

Affected

1state residents only

Linked

4 filings

Confidence

66%

Full breach record for The Longleaf Network LLC →

The Longleaf Network, LLC reported a cybersecurity incident to the Maryland Attorney General on March 3, 2025. Between May 19 and May 29, 2024, an unauthorized actor accessed the company's network, potentially exposing the name and health insurance information of one Maryland resident. The company contained the incident, investigated the scope, and provided one year of complimentary credit monitoring through Experian to the affected individual. No evidence of misuse was found.

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Maryland clock✗ MD AG >90d40 weeks discovery → filing

Incident timeline

undetected · 10 days

discovery → filing · 40 weeks / 278 days

May 19, 2024

Begins

May 29, 2024

Discovered

Mar 3, 2025

Filed

vs. sector median

+29 wks slower

This filing is one of 4 filings about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (3) · sorted by filing gap

Vermont State AGbd_162b40d20a1b4e522025-03-03Verified
Indiana State AGbd_6bc6870c71a554fb2025-03-03Candidate
Massachusetts State AGbd_9d0040b36b138f9b2025-03-04 · +1dVerified

Name: The Longleaf Network LLC
norm: the longleaf network
Domain: tlhg.org

Name: The Longleaf Network LLC
norm: the longleaf network
Domain: tlhg.org
Industry: Technologyllm

Discovered: May 29, 2024
Breach occurred: May 19, 2024 – May 29, 2024
Undetected for: 10 daysoccurrence → discovery
Materiality determined: —
Notification sent: Mar 3, 2025
Affected individuals: 1state-resident count only
Data types: Identity (basic)Health (basic)
Attack vector: Unauthorized Access
MITRE ATT&CK: T1190 Exploit Public-Facing Application
Threat actor: External
Regulator citations: notified requisite state regulatory authorities and law enforcement of this incident
Initial access: exploit_public_facing

During the incident: Took steps to contain the incident and launched an investigation
Conducted a thorough and time-intensive review of the impacted data
Undertook a thorough and time intensive review to locate the address information necessary to notify impacted individuals
Working to implement additional safeguards and training for its employees
Providing access to credit monitoring services for one (1) year, through Experian, to individuals whose personal information was potentially affected by this incident, at no cost to these individuals
Providing impacted individuals with guidance on how to better protect against identity theft and fraud
Providing individuals with information on how to place a fraud alert and security freeze on one’s credit file
Providing contact details for the national consumer reporting agencies
Providing information on how to obtain a free credit report
Encouragement to contact the Federal Trade Commission, their state Attorney General, and law enforcement
Changes made: Reviewing our policies, procedures, and processes related to the storage and access of personal information to reduce the likelihood of a similar future event
Working to implement additional safeguards and training for its employees
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 40 weeks(278 days from discovery to filing)
Compliance flags: MD AG >90d
Discovery-date grounding: letter-groundedThe discovery date is the detection date narrated in the notification letter — the defensible tier.

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 4 filings · 4 states

View merged incident ↗

Vermont State AGMar 3 · first

Indiana State AGMar 3 · first

Maryland State AGMar 3 · first · this page

Massachusetts State AG+1d

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://oag.maryland.gov/resources-info/SBN%20Documents/2025/ITU-376474.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Mar 3, 2025
Raw hash: 8c07e7b06f7260a56ef4b50cead3c834bea4e4ce2990455f8b047fbcdabc5ca5

Linked disclosures

Regulatory filings (3) · sorted by filing gap

Reporting entityThe Longleaf Network LLC

Victim entityThe Longleaf Network LLC

Incidentdiscovered May 29, 2024

Stated responseTook steps to contain the incident and launched an investigation

ComplianceMD AG >90d

Extraction provenanceno artifact recorded

Source provenanceoag.maryland.gov