HackingProfessional ServicesProfessional ServicesData ExfiltratedCustomer Data InvolvedEmployee Data InvolvedIdentity (basic)Government IDMediumResolved

Legacy Professionals, LLP

bd_668ab37ff5d363e4 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Apr 25, 2024

Filed

Feb 28, 2025

To disclose

44 weeks

Affected

Not disclosed

Linked

13 filings

Confidence

64%

Full breach record for Legacy Professionals, LLP →

Legacy Professionals LLP, a full-service accounting firm, experienced an unauthorized access incident between April 25 and April 30, 2024. The firm learned of suspicious activity in late April 2024. An investigation, assisted by a third-party cybersecurity specialist, determined that certain files were taken from Legacy servers by an unauthorized actor. The investigation confirmed in early February 2025 that the affected information may have included names and social security numbers. The firm terminated unauthorized access, reported the incident to federal law enforcement, implemented stricter access controls, and offered 24 months of credit monitoring and identity theft protection to affected individuals.

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California clockDiscovered Apr 25, 2024 → Notified Feb 27, 2025308d ✗ CA 60-day late44 weeks discovery → filing

Incident timeline

discovery → filing · 44 weeks / 309 days

Apr 25, 2024

Begins

Apr 25, 2024

Discovered

Feb 28, 2025

Filed

vs. sector median

+25 wks slower

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

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
Massachusetts State AGbd_82d3ee4a1c2164892025-02-28Verified

Show 6 more filings ↓up to 70d gap

Maryland State AGbd_e36cc97a1f40851d2025-02-28Verified
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: Legacy Professionals, LLP
norm: legacy professionals
Domain: legacycpas.com

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

Discovered: Apr 25, 2024
Breach occurred: Apr 25, 2024 – Apr 30, 2024
Undetected for: 0 daysoccurrence → discovery
Materiality determined: —
Notification sent: Feb 27, 2025
Affected individuals: Not disclosed
Data types: Identity (basic)Government ID
Attack vector: Unknown
MITRE ATT&CK: T1041 Exfiltration Over C2 Channel
Threat actor: External
Regulator citations: Reported this event to federal law enforcement

During the incident: Secured our environment
Investigated the nature and scope of the issue with assistance from a third-party cybersecurity specialist
Ensured the unauthorized access had been terminated
Reported this event to federal law enforcement
Implemented even more stringent access controls
Offering you access to twenty-four (24) months of credit monitoring and identity theft protection services through IDX at no cost to you
Changes made: Implemented even more stringent access controls
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 44 weeks(309 days from discovery to filing)
Compliance flags: CA 60-day late · 308d
Discovery-date grounding: letter-groundedThe discovery date is the detection date narrated in the notification letter — the defensible tier.
Clock breakdown: Statute Window Elapsed Threshold Status
California
Discovered: Apr 25, 2024
→ Notified: Feb 27, 2025
308d 60 days (analyst band, pre-2026 discoveries) CA 60-day late

Statute	Window	Elapsed	Threshold	Status
California	Discovered: Apr 25, 2024 → Notified: Feb 27, 2025	308d	60 days (analyst band, pre-2026 discoveries)	CA 60-day late

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

Massachusetts State AG+1d

Maryland State AG+1d

Montana State AG+1d

California 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.ca.gov/ecrime/databreach/reports/sb24-599299
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: 8d4e2bd0151a618c0b476a83a8bb6d0c0dcae65adc73577791842f919753841b

Linked disclosures

Regulatory filings (10) · sorted by filing gap

Reporting entityLegacy Professionals, LLP

Victim entityLegacy Professionals, LLP

Incidentdiscovered Apr 25, 2024

Stated responseSecured our environment

ComplianceCA 60-day late

Extraction provenanceno artifact recorded

Source provenanceoag.ca.gov