MalwareFinancial ServicesFinanceRansomwareData ExfiltratedData EncryptedCustomer Data InvolvedIdentity (basic)Government IDHealth (basic)PIIHighContained

Landmark Admin

bd_6840a4269b9261ba · schema v1 · pii pii-v1

Severity

High

Discovered

May 13, 2024

Filed

Oct 24, 2024

To disclose

23 weeks

Affected

55,488state residents only

Confidence

64%

Full breach record for Landmark Admin →9 incidents on file

Landmark Admin, LLC, a third-party administrator for insurance carriers, notified individuals of a data breach where unauthorized access occurred between May 13 and June 17, 2024. The incident involved data encryption and exfiltration (ransomware). Compromised data included names, tax IDs, driver's licenses, passports, and medical information. Landmark engaged forensic investigators, notified law enforcement, and implemented extensive security upgrades including MFA and network segmentation.

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South Carolina clock✓ SC CRA notice due23 weeks discovery → filing

⚠ occurrence dateThe stored discovery date equals the breach OCCURRENCE date. Detection is normally later, so this OVERSTATES the delay — a 'late' verdict here may not be real.

Incident timeline

discovery → filing · 23 weeks / 164 days

May 13, 2024

Begins

May 13, 2024

Discovered

Oct 24, 2024

Filed

vs. sector median

+15 wks slower

Tracked as a single-filing incident — the only disclosure on record for this event so far.Confirmed55,488 affectedView incident

Name: Landmark Admin
norm: landmark admin

Name: Landmark Admin
norm: landmark admin
Industry: Financial Servicesllm

Discovered: May 13, 2024
Breach occurred: May 13, 2024 – Jun 17, 2024
Undetected for: 0 daysoccurrence → discovery
Materiality determined: —
Notification sent: Oct 23, 2024
Affected individuals: 55,488state-resident count only
Data types: Identity (basic)Government IDHealth (basic)PII
Attack vector: Ransomware
MITRE ATT&CK: T1486 Data Encrypted for ImpactT1041 Exfiltration Over C2 Channel
Threat actor: ExternalFinancial
Regulator citations: Notified law enforcement of this incident

During the incident: Disconnected the affected systems and remote access to the network
Engaged a specialized third-party cybersecurity firm and IT personnel to assist with securing the environment
Conducted a comprehensive forensic investigation
Notified law enforcement of this incident
Changes made: Acquired servers and deployed after server hardening
Deployed a new firewall with the latest firmware
Obtained new external IP address assigned by a new Internet Service Provider
Implemented new domain controllers with new account naming conventions and forced new passwords
Enabled BitLocker on all hard drives
Reimaged all printers on the network
Reimaged all network switches and updated to the latest firmware
Reimaged and updated all IoT devices with the latest firmware
Provided additional security training for all staff members
Restricted all points of access to its systems
Engaged a managed service provider to supplement the existing strong security posture with additional monitoring and protection software
Requires multifactor authentication for all devices (for both user and administrator logins)
Offering identity theft protection services through IDX, A ZeroFox Company
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 23 weeks(164 days from discovery to filing)
Compliance flags: SC CRA notice due
Discovery-date grounding: occurrence dateThe stored discovery date equals the breach OCCURRENCE date. Detection is normally later, so this OVERSTATES the delay — a 'late' verdict here may not be real.

Status: No extraction artifact recorded for this disclosure.

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://consumer.sc.gov/sites/consumer/files/Documents/LandmarkAdminLLC.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Oct 24, 2024
Raw hash: 671ba117e32eeadb5cf677dfd1e06b21b616a618c3a0d8b45933d573d18f642e

Reporting entityLandmark Admin

Victim entityLandmark Admin

Incidentdiscovered May 13, 2024

Stated responseDisconnected the affected systems and remote access to the network

ComplianceSC CRA notice due

Extraction provenanceno artifact recorded

Source provenanceconsumer.sc.gov