DisclosureLens
UnknownGovernment IDHigh

TransUnion

bd_d87eb450bda40886 · schema v1 · pii pii-v1

Severity

High

Discovered

—

Filed

Sep 4, 2025

To disclose

—

Affected

95,336state residents only

Linked

5 filings

Confidence

95%
Full breach record for TransUnion →13 incidents on file

TransUnion LLC reported a data breach to the Massachusetts Office of Consumer Affairs and Business Regulation. The breach was reported on 2025-09-04. 95,336 Massachusetts residents were affected.

Leak gap clock⏱ Leak >30d
⚠ no discovery dateNo discovery date was extracted, so no notification clock can be evaluated.

Incident timeline — partial

? — ?

Breach window unknown

Sep 4, 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
A leak claim by shinyhunters about this victim predates this filing by 68 days.View originating leak claim

Linked disclosures

Why this link?

Ransomware claims (1)

Regulatory filings (3) · sorted by filing gap

Filing propagation · 4 filings · 4 states

View merged incident ↗
New Hampshire State AGSep 4 · first
Texas State AGSep 4 · first
South Carolina State AGSep 4 · first
Massachusetts State AGSep 4 · 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.