DisclosureLens
UnknownInformationLow

US Cellular

bd_8e201178f23c7915 · schema v1 · pii pii-v1

Severity

Low

Discovered

Jan 6, 2021

Filed

Jan 22, 2021

To disclose

16 days

Affected

276

Linked

3 filings

Confidence

95%
Full breach record for US Cellular →3 incidents on file

USCellular reported a data breach to the Oregon Attorney General. The breach was reported on 2021-01-22. The breach occurred during 1/4/2021 - 1/10/2021. The breach was discovered on 1/6/2021. 276 individuals were affected. Notice was sent on 1/21/2021.

Oregon clock✓ OR AG ≤45d16 days discovery → filing
⚠ AG web formThe discovery date came from the AG web-form field, which is systematically later than the detection date stated in the letter. Treat the clock as indicative.

Incident timeline

undetected · 2 days
discovery → filing · 16 days

Jan 4, 2021

Begins

Jan 6, 2021

Discovered

Jan 22, 2021

Filed

This filing is one of 3 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (2) · sorted by filing gap

Filing propagation · 3 filings · 3 states

View merged incident ↗
Maine State AGJan 22 · first
Oregon State AGJan 22 · first · this page
New Hampshire State AG+3d

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.