UnknownGovernmentGovernmentCustomer Data InvolvedPIIIdentity (basic)Government IDMedium

Massachusetts Department of Revenue

bd_c2eb8e7f755d2a35 · schema v1 · pii pii-v2

Severity

Medium

Discovered

—

Filed

Oct 1, 2026

To disclose

—

Affected

2state residents only

Linked

2 filings

Confidence

60%

Full breach record for Massachusetts Department of Revenue →45 incidents on file

The Commonwealth of Massachusetts Department of Revenue notified individuals of an unauthorized disclosure of personal information. The notice, a sample template with placeholder dates, offers 24 months of credit monitoring via Experian. Specific dates, counts, and attack vectors are not disclosed in this sample notice.

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Incident timeline — partial

? — ?

Breach window unknown

Oct 1, 2026

Filed

No interval is drawn: no breach start or discovery date is on record for this filing.

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

Linked disclosures

Why this link?

Regulatory filings (1) · sorted by filing gap

Massachusetts State AGbd_14bf4808b1e23c8e2026-10-01Candidate

Name: Massachusetts Department of Revenue
norm: massachusetts department of revenue

Name: Massachusetts Department of Revenue
norm: massachusetts department of revenue
Industry: Governmentllm

Discovered: —
Materiality determined: —
Notification sent: —
Affected individuals: 2state-resident count only
Data types: PIIIdentity (basic)Government ID
Attack vector: Unknown

During the incident: Offering credit monitoring services for twenty-four (24) months through Experian’s Identity Works, at no cost to you
Source: Quoted from the filing itself, not independently verified.

Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 2 filings

View merged incident ↗

Massachusetts State AGOct 1 · first

Massachusetts State AGOct 1 · 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.mass.gov/doc/2026-1723-department-of-revenue/download
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Oct 1, 2026
Raw hash: 3d3aa820ab33eb55f4654700256a0b0f8f7bbb6f479dff65c917dd5caa9f3b1a

Linked disclosures

Regulatory filings (1) · sorted by filing gap

Reporting entityMassachusetts Department of Revenue

Victim entityMassachusetts Department of Revenue

IncidentUnknown

Stated responseOffering credit monitoring services for twenty-four (24) months through Experian’s Identity Works, at no cost to you

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancewww.mass.gov