MalwareProfessional ServicesProfessional ServicesRansomwareCapture Stored DataData ExfiltratedData EncryptedCustomer Data InvolvedEmployee Data InvolvedBiometricFinancial accountHealth (basic)Identity (basic)Government IDPHIHighContained

Houser, LLP

bd_2f3a1112bc72149f · schema v1 · pii pii-v1

Severity

High

Discovered

May 9, 2023

Filed

Feb 28, 2024

To disclose

42 weeks

Affected

7,791state residents only

Linked

23 filings

Confidence

71%

Full breach record for Houser, LLP →

Houser LLP, a law firm, reported a ransomware incident where unauthorized access occurred between May 7-9, 2023. Files were encrypted and data copied. The actor claimed to have deleted stolen data. Affected data included names, SSNs, driver's licenses, financial accounts, and medical info. 7,791 Washington residents were notified. Houser engaged forensic specialists, notified the FBI, and implemented MFA and EDR solutions.

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Washington clock✗ WA AG >90d42 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 · 2 days

discovery → filing · 42 weeks / 295 days

May 7, 2023

Begins

May 9, 2023

Discovered

Feb 28, 2024

Filed

vs. sector median

+23 wks slower

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

Linked disclosures

Why this link?

Regulatory filings (10) · sorted by filing gap

New Hampshire State AGbd_13a325d86f76f6f72024-03-26 · +27dVerified
Delaware State AGbd_18b5dd7e86b213522024-03-26 · +27dVerified
California State AGbd_8a4cf4dd8b36d1b42024-03-26 · +27dVerified
Maine State AGbd_c1c7841f0ee89fe52024-03-26 · +27dVerified

Show 6 more filings ↓up to 44d gap

Vermont State AGbd_af0b2641e3351df62024-03-27 · +28dVerified
California State AGbd_3f910d0506adf4a32024-04-12 · +44dVerified
Vermont State AGbd_521a4b0865ecc11a2024-04-12 · +44dVerified
New Hampshire State AGbd_5c7bcad0b397e0a12024-04-12 · +44dVerified
Delaware State AGbd_631c1acc1b5f6e812024-04-12 · +44dVerified
Maine State AGbd_b60a96892267f8cc2024-04-12 · +44dVerified

Showing first 10 of 22 linked disclosures.

Name: Mullen Coughlin LLC
norm: mullen coughlin
Domain: houser.com

Name: Houser, LLP
norm: houser
Domain: houser-law.com
Industry: Professional Servicesllm

Discovered: May 9, 2023
Breach occurred: May 7, 2023 – May 9, 2023
Undetected for: 2 daysoccurrence → discovery
Materiality determined: —
Notification sent: Feb 28, 2024
Affected individuals: 7,791state-resident count only
Data types: Identity (basic)Government IDFinancial accountHealth (basic)
Data elements: NameSocial Security numberDriver's licence numberFinancial account numberDate of birthHealth insurance IDMedical informationBiometric data
WA-stated cause: Cyberattack
WA-stated duration: lifecycle 1-99dexposure 1-99d
WA-stated discovery: Found while ongoingContained same day
Attack vector: Ransomware
MITRE ATT&CK: T1486 Data Encrypted for ImpactT1041 Exfiltration Over C2 Channel
Threat actor: ExternalFinancial
Regulator citations: Notified the FBI regarding the eventProvided written notice of this incident to relevant state regulators

During the incident: Launched an investigation, with the assistance of third-party forensic specialists
Retained a vendor to conduct a comprehensive review of the files potentially copied
Notified the FBI regarding the event
Provided written notice of this incident to relevant state regulators
Provided written notice to the three major credit reporting agencies
Changes made: Implemented additional safeguards and policies and procedures relating to data privacy, security and its network environment
Deployment of RocketCyber, an endpoint detection and response tool
Implemented multi-factor authentication for Outlook 365, net extender VPN tunnel and remote desktop connection
Added ransomware detection software
Implemented the use of phishing simulation software
Conducted vulnerability assessment and penetration testing
Providing access to credit monitoring services for twelve (12) months
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 42 weeks(295 days from discovery to filing)
Compliance flags: WA AG >90d
Discovery-date grounding: 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.

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 11 filings · 6 states

View merged incident ↗

Washington State AGFeb 28 · first · this page

New Hampshire State AG+27d

Delaware State AG+27d

California State AG+27d

Maine State AG+27d

Vermont State AG+28d

California State AG+44d

Vermont State AG+44d

New Hampshire State AG+44d

Delaware State AG+44d

Maine State AG+44d

Pattern: first filing Feb 28 (WA), last Apr 12 (ME) — a 44-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/BreachA28099.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Feb 28, 2024
Raw hash: 68e12d3b42387685839ecc9527f1a582ccebc8ba8864f0564c0f17b6a71a8238

Linked disclosures

Regulatory filings (10) · sorted by filing gap

Reporting entityMullen Coughlin LLC

Victim entityHouser, LLP

Incidentdiscovered May 9, 2023

Stated responseLaunched an investigation, with the assistance of third-party forensic specialists

ComplianceWA AG >90d

Extraction provenanceno artifact recorded

Source provenanceagportal-s3bucket.s3.amazonaws.com