UnknownGovernmentGovernmentCustomer Data InvolvedPIIIdentity (basic)Government IDMedium

Massachusetts Department of Revenue

bd_1091069755f3176b · schema v1 · pii pii-v1

Severity

Medium

Discovered

—

Filed

Apr 16, 2026

To disclose

—

Affected

3state residents only

Confidence

67%

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

The Commonwealth of Massachusetts Department of Revenue notified individuals that unauthorized access occurred to their personal information. The notice is a template with placeholder dates ('DATE') and does not specify the exact date of the incident, the number of affected individuals, or the specific method of unauthorized access. The Department is offering 24 months of credit monitoring through Experian.

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Incident timeline — partial

? — ?

Breach window unknown

Apr 16, 2026

Filed

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

Tracked as a single-filing incident — the only disclosure on record for this event so far.Confirmed3 affectedView incident

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: 3state-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 IdentityWorks, 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.

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/2026-587-department-of-revenue/download
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Apr 16, 2026
Raw hash: 77513b638b6273c7d3e67b85cb6fa3cb1e1e89ab7a00fca5477ce0ce75f82903

Reporting entityMassachusetts Department of Revenue

Victim entityMassachusetts Department of Revenue

IncidentUnknown

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

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancewww.mass.gov