DisclosureLens
UnknownHigh

TransUnion

bd_5b59f10c6f6c553f · schema v1 · pii pii-v1

Severity

High

Discovered

—

Filed

Sep 2, 2025

To disclose

—

Affected

4,461,511

Confidence

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

TransUnion LLC reported a data breach to the Oregon Attorney General. The breach was reported on 2025-09-02. 4,461,511 individuals 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 2, 2025

Filed

—

No filing yet · watching

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

Tracked as a single-filing incident — the only disclosure on record for this event so far.Confirmed4,461,511 affectedView incident
A leak claim by shinyhunters about this victim predates this filing by 66 days.View originating leak claim

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.