UnknownGovernment IDFinancial accountPCIHigh

Barton Gilman LLP

bd_43fc4dd61c86c576 · schema v1 · pii pii-v1

Severity

High

Discovered

—

Filed

Dec 24, 2025

To disclose

—

Affected

3,375state residents only

Linked

5 filings

Confidence

95%

Full breach record for Barton Gilman LLP →

Barton Gilman LLP reported a data breach to the Massachusetts Office of Consumer Affairs and Business Regulation. The breach was reported on 2025-12-24. 3,375 Massachusetts residents were affected.

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Massachusetts clock✓ MA credit monitoring due

⚠ no discovery dateNo discovery date was extracted, so no notification clock can be evaluated.

Incident timeline — partial

? — ?

Breach window unknown

Dec 24, 2025

Filed

—

Corroborated · see linked filings

Compliance clocks stay unassessable until a regulatory filing lands. Dashed segments fill in automatically when corroboration arrives.

This filing is one of 5 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (4) · sorted by filing gap

Vermont State AGbd_0923a90f1999f7462025-12-23 · +1dCandidate
Maine State AGbd_14ec9c5b447c32422025-12-23 · +1dVerified
New Hampshire State AGbd_598fd2d5e12c9d542025-12-23 · +1dVerified
Indiana State AGbd_6f242b5c4968fe202025-12-23 · +1dVerified

Name: Barton Gilman LLP
norm: barton gilman

Name: Barton Gilman LLP
norm: barton gilman

Discovered: —
Materiality determined: —
Notification sent: —
Affected individuals: 3,375state-resident count only
Data types: Government IDFinancial accountPCI
Data elements: Social Security numberFinancial account numberDriver's licence numberPayment card number
Stated not affected: Medical information
The filing states these were not involved. Categories absent from both lists were not addressed either way.
Attack vector: Unknown

Compliance flags: MA credit monitoring due
Discovery-date grounding: no discovery dateNo discovery date was extracted, so no notification clock can be evaluated.

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 5 filings · 5 states

View merged incident ↗

Vermont State AGDec 23 · first

Maine State AGDec 23 · first

New Hampshire State AGDec 23 · first

Indiana State AGDec 23 · first

Massachusetts State AG+1d · 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.mass.gov/doc/data-breach-report-2025/download
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Dec 24, 2025
Raw hash: cea9c155c6d1231ff1734c304991a3a24edbc7e8c57e68dec61d54f94d99946b

Linked disclosures

Regulatory filings (4) · sorted by filing gap

Reporting entityBarton Gilman LLP

Victim entityBarton Gilman LLP

IncidentUnknown

ComplianceMA credit monitoring due

Extraction provenanceno artifact recorded

Source provenancewww.mass.gov