HackingProfessional ServicesProfessional ServicesData ExfiltratedCustomer Data InvolvedIdentity (basic)Government IDFinancial accountMediumContained

Legacy Professionals, LLP

bd_e36cc97a1f40851d · schema v1 · pii pii-v1

Severity

Medium

Discovered

Apr 1, 2024

Filed

Feb 28, 2025

To disclose

48 weeks

Affected

477state residents only

Linked

13 filings

Confidence

67%

Full breach record for Legacy Professionals, LLP →

Legacy Professionals, LLP notified the Maryland AG of a data event affecting 477 residents. Unauthorized access occurred in April 2024, resulting in the exfiltration of names, SSNs, and financial account data. Legacy engaged forensic investigators, notified law enforcement, and is offering two years of credit monitoring.

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Maryland clock✗ MD AG >90d48 weeks discovery → filing

⚠ unattributedNo provenance was recorded for this discovery date and it matches no other date on the record. It may be correct, but it is not independently grounded.

Incident timeline

discovery → filing · 48 weeks / 333 days

Apr 1, 2024

Discovered

Feb 28, 2025

Filed

vs. sector median

+29 wks slower

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

A leak claim by lockbit_3 about this victim predates this filing by 301 days.View originating leak claim

Linked disclosures

Why this link?

Regulatory filings (10) · sorted by filing gap

HHS OCRbd_182272a7ffb5a97d2025-02-28Verified by operator
New Hampshire State AGbd_2b2c9c813c33d3412025-02-28Verified
Maine State AGbd_3e4130a7434eb9ad2025-02-28Verified
California State AGbd_668ab37ff5d363e42025-02-28Verified

Show 6 more filings ↓up to 70d gap

Massachusetts State AGbd_82d3ee4a1c2164892025-02-28Verified
Montana State AGbd_f2771bcbb0bec0722025-02-28Verified
Nebraska State AGbd_348f472909d954c82025-02-27 · +1dVerified
Iowa State AGbd_57931229329098382025-02-27 · +1dVerified
Indiana State AGbd_6a3248ad6530de472025-02-27 · +1dVerified
Washington State AGbd_052763491bdaac522025-05-09 · +70dVerified

Showing first 10 of 12 linked disclosures.

Name: Mullen Coughlin LLC
norm: mullen coughlin

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

Discovered: Apr 1, 2024
Materiality determined: —
Notification sent: Feb 27, 2025
Affected individuals: 477state-resident count only
Data types: Identity (basic)Government IDFinancial account
Data elements: Social Security number
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid AccountsT1041 Exfiltration Over C2 Channel
Threat actor: ExternalFinancial
Regulator citations: Notified federal law enforcementProviding written notice to relevant state and federal regulatorsProviding written notice to the three major credit reporting agencies

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
Retained a third-party notification services provider
Provided written notice to Maryland residents
Notified federal law enforcement
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
Providing written notice to relevant state and federal regulators
Providing written notice to the three major credit reporting agencies
Changes made: Implementing additional safeguards and training to its employees
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 48 weeks(333 days from discovery to filing)
Compliance flags: MD AG >90dLeak >180d
Discovery-date grounding: unattributedNo provenance was recorded for this discovery date and it matches no other date on the record. It may be correct, but it is not independently grounded.

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

Montana State AG+1d

Maryland State AG+1d · this page

Washington State AG+71d

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://oag.maryland.gov/resources-info/SBN%20Documents/2025/ITU-376441.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Feb 28, 2025
Raw hash: 92768f248715334acc4313c2dc226cd43d82e9760efb396ae146fc6b9422c117

Linked disclosures

Regulatory filings (10) · sorted by filing gap

Reporting entityMullen Coughlin LLC

Victim entityLegacy Professionals, LLP

Incidentdiscovered Apr 1, 2024

Stated responseRetained Mullen Coughlin as privacy counsel

ComplianceMD AG >90d

Extraction provenanceno artifact recorded

Source provenanceoag.maryland.gov