MalwareFinancial ServicesFinanceRansomwareData ExfiltratedData EncryptedDelayed DiscoveryFinancial accountHealth (basic)Identity (basic)Government IDPHIMediumContained

Legacy Professionals, LLP

bd_052763491bdaac52 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Apr 27, 2024

Filed

May 9, 2025

To disclose

13 months

Affected

890state residents only

Linked

13 records

Confidence

69%

Full breach record for Legacy Professionals, LLP →

Legacy Professionals, LLP reported a cyberattack in Washington affecting 890 residents. Unauthorized access occurred April 25-30, 2024; discovered April 27, 2024. Malware encrypted files and exfiltrated data including SSNs, driver's licenses, financial info, and medical records. Notifications began Feb 28, 2025. Response included forensic investigation, law enforcement notification, and 2 years of credit monitoring.

J jump to incidentP pin to compareR raw source

Washington clock✗ WA AG >90d13 months 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 · 13 months / 377 days

Apr 25, 2024

Begins

Apr 27, 2024

Discovered

May 9, 2025

Filed

vs. sector median

+46 wks slower

This filing is one of 13 records about the same incident.View merged incident

A leak claim by lockbit_3 about this victim was first seen 271 days before this filing.View originating leak claim

Linked disclosures

Why this link?

Regulatory filings (10) · sorted by filing gap

HHS OCRbd_182272a7ffb5a97d2025-02-28 · +70dVerified by operator
New Hampshire State AGbd_2b2c9c813c33d3412025-02-28 · +70dVerified
Maine State AGbd_3e4130a7434eb9ad2025-02-28 · +70dVerified
California State AGbd_668ab37ff5d363e42025-02-28 · +70dVerified

Show 6 more filings ↓up to 71d gap

Massachusetts State AGbd_82d3ee4a1c2164892025-02-28 · +70dVerified
Maryland State AGbd_e36cc97a1f40851d2025-02-28 · +70dVerified
Montana State AGbd_f2771bcbb0bec0722025-02-28 · +70dVerified
Nebraska State AGbd_348f472909d954c82025-02-27 · +71dVerified
Iowa State AGbd_57931229329098382025-02-27 · +71dVerified
Indiana State AGbd_6a3248ad6530de472025-02-27 · +71dVerified

Showing first 10 of 12 linked disclosures.

Name: Legacy Professionals, LLP
norm: legacy professionals
Domain: legacycpas.com

Name: Legacy Professionals, LLP
norm: legacy professionals
Domain: legacycpas.com
Industry: Financial Servicesllm

Discovered: Apr 27, 2024
Breach occurred: Apr 25, 2024 – Apr 30, 2024
Undetected for: 2 daysoccurrence → discovery
Materiality determined: —
Notification sent: Feb 28, 2025
Affected individuals: 890state-resident count only
Data types: Identity (basic)Government IDFinancial accountHealth (basic)
Data elements: NameSocial Security numberDriver's licence numberFinancial account numberDate of birthPassport numberHealth insurance IDMedical information
WA-stated cause: Cyberattack
WA-stated duration: lifecycle 1-99dexposure 1-99d
WA-stated discovery: Found while ongoing
Attack vector: Ransomware
MITRE ATT&CK: T1486 Data Encrypted for ImpactT1041 Exfiltration Over C2 Channel
Threat actor: ExternalFinancial
Regulator citations: Provided written notice to relevant state and federal regulatorsProvided notice to the three major credit reporting agencies, Equifax, Experian, and TransUnion

During the incident: Retained Mullen Coughlin as privacy counsel
Engaged a third-party digital forensic investigation firm
Conducted a time-intensive and thorough programmatic and manual review of the impacted data set
Vetted and retained a third-party notification services provider
Provided complimentary credit monitoring services
Notified federal law enforcement
Changes made: Implemented even more stringent access controls
Providing access to credit monitoring services for two years through IDX
Providing impacted individuals with guidance on how to better protect against identity theft and fraud
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 13 months(377 days from discovery to filing)
Compliance flags: WA AG >90dLeak >180d
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 · 11 states

View merged incident ↗

Nebraska State AGFeb 27 · first

Iowa State AGFeb 27 · first

Indiana State AGFeb 27 · first

HHS OCR+1d

New Hampshire State AG+1d

Maine State AG+1d

California State AG+1d

Massachusetts State AG+1d

Maryland State AG+1d

Montana State AG+1d

Washington State AG+71d · this page

Pattern: first filing Feb 27 (NE), last May 9 (WA) — a 71-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 12 — 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/BreachA33282.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: May 9, 2025
Raw hash: e540900317b1ff4af2448a1230075e7ebdba4f4eb4f273ae688ac58d20122ad3

Linked disclosures

Regulatory filings (10) · sorted by filing gap

Reporting entityLegacy Professionals, LLP

Victim entityLegacy Professionals, LLP

Incidentdiscovered Apr 27, 2024

Stated responseRetained Mullen Coughlin as privacy counsel

ComplianceWA AG >90d

Extraction provenanceno artifact recorded

Source provenanceagportal-s3bucket.s3.amazonaws.com