UnknownGovernment IDMedium

Greater Boston Chamber of Commerce

bd_47e874e840d5d6d0 · schema v1 · pii pii-v1

Severity

Medium

Discovered

—

Filed

Oct 21, 2025

To disclose

—

Affected

155state residents only

Linked

4 filings

Confidence

95%

Full breach record for Greater Boston Chamber of Commerce →

Greater Boston Chamber of Commerce reported a data breach to the Massachusetts Office of Consumer Affairs and Business Regulation. The breach was reported on 2025-10-21. 155 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

Oct 21, 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 4 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (3) · sorted by filing gap

Maine State AGbd_4364ddf83ec140b32025-10-21Candidate
Vermont State AGbd_a21aa6d50a2ae90d2025-10-21Verified
Massachusetts State AGbd_3360a0ce60c9ae962026-02-05 · +107dVerified

Name: Greater Boston Chamber of Commerce
norm: greater boston chamber of commerce

Name: Greater Boston Chamber of Commerce
norm: greater boston chamber of commerce

Discovered: —
Materiality determined: —
Notification sent: —
Affected individuals: 155state-resident count only
Data types: Government ID
Data elements: Social Security number
Stated not affected: Medical informationFinancial account numberDriver's licence numberPayment card number
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 · 4 filings · 3 states

View merged incident ↗

Maine State AGOct 21 · first

Vermont State AGOct 21 · first

Massachusetts State AGOct 21 · first · this page

Massachusetts State AG+107d

Pattern: first filing Oct 21 (ME), last Feb 5 (MA) — a 107-day rolling notification. Rolling spreads often mean counsel is filing as thresholds trip per state. Why this link?

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: Oct 21, 2025
Raw hash: ace16e83356af32e06955f924c19ab1ede0835ab92c6451e1f29049acdf1ec68

Linked disclosures

Regulatory filings (3) · sorted by filing gap

Reporting entityGreater Boston Chamber of Commerce

Victim entityGreater Boston Chamber of Commerce

IncidentUnknown

ComplianceMA credit monitoring due

Extraction provenanceno artifact recorded

Source provenancewww.mass.gov