HackingFinancial ServicesFinanceStolen CredentialsBECData ExfiltratedCustomer Data InvolvedTargetedIdentity (basic)Government IDMediumContained

Garson Brothers Asset Management, LLC

bd_cb3f8ddff569a791 · schema v1 · pii pii-v1

Severity

Medium

Discovered

May 1, 2025

Filed

Sep 24, 2025

To disclose

21 weeks

Affected · nationwide

1671 in this filing

Linked

2 filings

Confidence

66%

Full breach record for Garson Brothers Asset Management, LLC →

Garson Brothers Asset Management, LLC reported an external system breach (hacking) on May 1, 2025, where an unknown actor accessed an employee's email account. The incident potentially exposed names and Social Security numbers for 167 individuals, including 1 Maine resident. Notifications were sent on September 16, 2025, offering 12 months of credit monitoring through Kroll.

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Maine clockDiscovered May 1, 2025 → Filed with AG Sep 24, 2025146d ✗ ME AG >90d21 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 · 21 weeks / 146 days

May 1, 2025

Begins

May 1, 2025

Discovered

Sep 24, 2025

Filed

vs. sector median

+13 wks slower

This filing is one of 2 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (1) · sorted by filing gap

Massachusetts State AGbd_e2405f61eb019ade2025-09-24Verified

Name: Constangy, Brooks, Smith & Prophete, LLP
norm: constangy brooks smith prophete

Name: Garson Brothers Asset Management, LLC
norm: garson brothers asset management
Industry: Financial Servicesllm

Discovered: May 1, 2025
Breach occurred: May 1, 2025
Undetected for: 0 daysoccurrence → discovery
Materiality determined: —
Notification sent: Sep 16, 2025
Affected individuals: 167state + nationwide
Data types: Identity (basic)Government ID
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid AccountsT1114 Email Collection
Threat actor: ExternalFinancial
Regulator citations: Notified Maine Attorney General
Initial access: valid_credentials

During the incident: Engaged cybersecurity experts
Secured its systems
Conducted a comprehensive review of affected files
Sent notification letters to affected individuals
Offered 12 months of complimentary Single-Bureau Credit Monitoring & Identity Theft Protection through Kroll
Changes made: Implemented additional security measures to further harden its environment
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 21 weeks(146 days from discovery to filing)
Compliance flags: ME AG >90d · 146dME resident >60d · 138d
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.
Clock breakdown: Statute Window Elapsed Threshold Status
Maine
Discovered: May 1, 2025
→ Filed with AG: Sep 24, 2025
146d 90 days ME AG >90d
Maine
Discovered: May 1, 2025
→ Notified: Sep 16, 2025
138d 60 days (analyst band; statutory cap is 30 days) ME resident >60d

Statute	Window	Elapsed	Threshold	Status
Maine	Discovered: May 1, 2025 → Filed with AG: Sep 24, 2025	146d	90 days	ME AG >90d
Maine	Discovered: May 1, 2025 → Notified: Sep 16, 2025	138d	60 days (analyst band; statutory cap is 30 days)	ME resident >60d

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 2 filings · 2 states

View merged incident ↗

Massachusetts State AGSep 24 · first

Maine State AGSep 24 · first · this page

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://www.maine.gov/agviewer/content/ag/985235c7-cb95-4be2-8792-a1252b4f8318/d1d6864c-a214-4d96-9515-b87c737296af.html
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Sep 24, 2025
Raw hash: cfb017d94684407d9654add75846759abe622d4bb54fc39ba7a8eb4c5d2855a5

Linked disclosures

Regulatory filings (1) · sorted by filing gap

Reporting entityConstangy, Brooks, Smith & Prophete, LLP

Victim entityGarson Brothers Asset Management, LLC

Incidentdiscovered May 1, 2025

Stated responseEngaged cybersecurity experts

ComplianceME AG >90d

Extraction provenanceno artifact recorded

Source provenancewww.maine.gov