MalwareFinancial ServicesFinanceRansomwareData ExfiltratedRansom DemandedPIIIdentity (basic)LowContained

The Mather Group LLC

bd_3fb0edde15536813 · schema v1 · pii pii-v1

Severity

Low

Discovered

Jun 21, 2023

Filed

Sep 14, 2023

To disclose

12 weeks

Affected

2state residents only

Linked

6 filings

Confidence

66%

Full breach record for The Mather Group LLC →

The Mather Group LLC notified clients of a June 21, 2023 malware incident involving unauthorized access to personal information. The company engaged forensic experts, notified the FBI, and offered 24 months of credit monitoring. The investigation concluded on August 10, 2023.

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Incident timeline

discovery → filing · 12 weeks / 85 days

Jun 21, 2023

Discovered

Sep 14, 2023

Filed

vs. sector median

+4 wks slower

This filing is one of 6 filings about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (5) · sorted by filing gap

Massachusetts State AGbd_16a721f3980fd9502023-09-14Verified
Vermont State AGbd_2a7169609785dc402023-09-14Verified
New Hampshire State AGbd_36da1fe1362248262023-09-14Verified
Indiana State AGbd_9798f80942aa90de2023-09-14Verified

Show 1 more filing ↓

Maine State AGbd_c8317ee81c4eba6b2023-09-14Verified

Name: The Mather Group LLC
norm: the mather

Name: The Mather Group LLC
norm: the mather
Industry: Financial Servicesllm

Discovered: Jun 21, 2023
Materiality determined: —
Notification sent: Sep 14, 2023
Affected individuals: 2state-resident count only
Data types: PIIIdentity (basic)
Attack vector: Ransomware
MITRE ATT&CK: T1486 Data Encrypted for ImpactT1119 Automated Collection
Threat actor: ExternalFinancial
Regulator citations: Notified the Federal Bureau of Investigation

During the incident: Engaged leading, independent cybersecurity experts to investigate
Notified the Federal Bureau of Investigation
Implemented enhanced technical security measures
Offered 24 months of complimentary credit and identity monitoring services through IDX
Changes made: Implemented enhanced technical security measures to minimize the chance that an incident like this could occur in the future
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 12 weeks(85 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 6 filings · 6 states

View merged incident ↗

Massachusetts State AGSep 14 · first

Vermont State AGSep 14 · first

New Hampshire State AGSep 14 · first

Indiana State AGSep 14 · first

Maine State AGSep 14 · first

Montana State AGSep 14 · 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://dojmt.gov/wp-content/uploads/OCP/Consumer-notification-letter-674.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Sep 14, 2023
Raw hash: 42584deabc8bad6106f681069894c033c05274fe7c77f657e74905f9f26221a4

Linked disclosures

Regulatory filings (5) · sorted by filing gap

Reporting entityThe Mather Group LLC

Victim entityThe Mather Group LLC

Incidentdiscovered Jun 21, 2023

Stated responseEngaged leading, independent cybersecurity experts to investigate

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancedojmt.gov