MalwareFinancial ServicesTechnologyFinanceRansomwareStolen CredentialsMulti-Stage ChainData ExfiltratedData EncryptedCustomer Data InvolvedDelayed DiscoveryIdentity (basic)Government IDFinancial accountHealth (basic)PHIHighContained

Landmark Admin

bd_9e8821db12aad897 · schema v1 · pii pii-v1

Severity

High

Discovered

May 13, 2024

Filed

Apr 11, 2025

To disclose

48 weeks

Affected

11,691state residents only

Linked

23 filings

Confidence

69%

Full breach record for Landmark Admin →5 incidents on file

Landmark Admin, LLC, a third-party administrator for insurance carriers, reported a ransomware incident discovered on May 13, 2024. The threat actor accessed the network via valid credentials over VPN, encrypted systems, and exfiltrated data including PII, PHI, and financial info. 11,691 Washington residents were notified. Landmark engaged forensic investigators, notified law enforcement, and offered credit monitoring.

J jump to incidentP pin to compareR raw source

Washington clock✗ WA AG >90d48 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 · 48 weeks / 333 days

May 13, 2024

Begins

May 13, 2024

Discovered

Apr 11, 2025

Filed

vs. sector median

+39 wks slower

This filing is one of 23 filings about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (10) · sorted by filing gap

California State AGbd_19c021424afbcfb22025-04-11Verified by operator
Maine State AGbd_473e2e2588c355282025-04-11Verified by operator
Iowa State AGbd_1baf85090385207d2025-04-10 · +1dVerified by operator
Illinois State AGbd_0a56c7825ce377bc2025-04-01 · +10dVerified by operator

Show 6 more filings ↓up to 170d gap

Idaho State AGbd_6c3d805bd8b125442025-03-24 · +18dVerified by operator
New Hampshire State AGbd_83109b510e4ed7122024-10-28 · +165dVerified by operator
South Carolina State AGbd_6840a4269b9261ba2024-10-24 · +169dVerified by operator
Oregon State AGbd_694502fe4f1453a62024-10-23 · +170dVerified
Indiana State AGbd_6c7ccc9b72bce2702024-10-23 · +170dVerified
Maine State AGbd_73af656696be6b732024-10-23 · +170dCandidate

Showing first 10 of 22 linked disclosures.

Name: Wilson Elser Moskowitz Edelman and Dicker LLP
norm: wilson elser Moskowitz Edelman and Dicker

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

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: 11,691state-resident count only
Data types: Identity (basic)Government IDFinancial accountHealth (basic)PHI
Data elements: NameSocial Security numberDriver's licence numberFinancial account numberDate of birthMilitary ID numberPassport numberHealth insurance IDMedical information
WA-stated cause: Cyberattack
WA-stated duration: lifecycle 1-99dexposure 1-99d
WA-stated discovery: Found while ongoing
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid AccountsT1041 Exfiltration Over C2 ChannelT1486 Data Encrypted for ImpactT1190 Exploit Public-Facing Application
Threat actor: ExternalFinancial
Regulator citations: Notified law enforcement of this incident
Initial access: valid_credentials

During the incident: Disconnected affected systems and remote access to the network
Engaged a specialized third-party cybersecurity firm and IT personnel to assist with securing the environment, remediation and recovery, live forensics, as well as to conduct a comprehensive forensic investigation
Notified the insurance carriers which it acted as a third-party administrator whose data was impacted
Changed the account passcodes
Notified law enforcement of this incident
Offered credit monitoring and identity theft protection services through IDX, A ZeroFox Company
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)
Built a new system that was totally disconnected from the prior system
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 48 weeks(333 days from discovery to filing)
Compliance flags: WA AG >90d
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.

Filing propagation · 11 filings · 10 states

View merged incident ↗

Oregon State AGOct 23 · first

Indiana State AGOct 23 · first

Maine State AGOct 23 · first

South Carolina State AG+1d

New Hampshire State AG+5d

Idaho State AG+152d

Illinois State AG+160d

Iowa State AG+169d

California State AG+170d

Maine State AG+170d

Washington State AG+170d · this page

Pattern: first filing Oct 23 (OR), last Apr 11 (WA) — a 170-day rolling notification. Rolling spreads often mean counsel is filing as thresholds trip per state. Why this link?

Cascade drawn from the first 10 linked disclosures of 22 — the full spread may be wider.

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://agportal-s3bucket.s3.amazonaws.com/databreach/BreachA32996.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Apr 11, 2025
Raw hash: 056c2ce65c86671bf26f7b6f4a02d08a0a9f96ae02ef2a8b68ed263087330813

Linked disclosures

Regulatory filings (10) · sorted by filing gap

Reporting entityWilson Elser Moskowitz Edelman and Dicker LLP

Victim entityLandmark Admin

Incidentdiscovered May 13, 2024

Stated responseDisconnected affected systems and remote access to the network

ComplianceWA AG >90d

Extraction provenanceno artifact recorded

Source provenanceagportal-s3bucket.s3.amazonaws.com