Social EngineeringTelecom & MediaInformationPhishingTargetedPIILowContained

USCC Services, LLC

bd_fba2ed7f8afda74c · schema v1 · pii pii-v1

Severity

Low

Discovered

Sep 22, 2020

Filed

Oct 11, 2020

To disclose

19 days

Affected · nationwide

362 in this filing

Confidence

66%

Full breach record for USCC Services, LLC →6 incidents on file

USCC Services, LLC d/b/a U.S. Cellular reported a phishing-based external system breach on September 21, 2020, discovered on September 22, 2020. The incident affected 36 individuals, including 2 Maine residents. The company sent written notifications to affected consumers on October 13, 2020. No identity theft protection services were offered.

J jump to incidentP pin to compareR raw source

Maine clockDiscovered Sep 22, 2020 → Filed with AG Oct 11, 202019d ✓ ME AG ≤30d19 days discovery → filing

⚠ unattributedNo provenance was recorded for this discovery date and it matches no other date on the record. It may be correct, but it is not independently grounded.

Incident timeline

undetected · 1 days

discovery → filing · 19 days

Sep 21, 2020

Begins

Sep 22, 2020

Discovered

Oct 11, 2020

Filed

Tracked as a single-filing incident — the only disclosure on record for this event so far.Confirmed36 affectedView incident

Name: USCC Services, LLC
norm: uscc services
Domain: uscellular.com

Name: USCC Services, LLC
norm: uscc services
Domain: uscellular.com
Also named: USCC Services, LLCdba oflegal entity
U.S. Cellulardba oftrade name
Industry: Telecom & Mediallm

Discovered: Sep 22, 2020
Breach occurred: Sep 21, 2020
Undetected for: 1 dayoccurrence → discovery
Materiality determined: —
Notification sent: Oct 13, 2020
Affected individuals: 36state + nationwide
Data types: PII
Attack vector: Phishing
MITRE ATT&CK: T1566.002 Spearphishing Link
Threat actor: ExternalFinancial
Regulator citations: Filed data breach notice with Maine Attorney General
Initial access: phishing_link

During the incident: Sent written notification to affected consumers
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 19 days(19 days from discovery to filing)
Compliance flags: ME AG ≤30d · 19d
Discovery-date grounding: unattributedNo provenance was recorded for this discovery date and it matches no other date on the record. It may be correct, but it is not independently grounded.
Clock breakdown: Statute Window Elapsed Threshold Status
Maine
Discovered: Sep 22, 2020
→ Filed with AG: Oct 11, 2020
19d 30 days ME AG ≤30d

Statute	Window	Elapsed	Threshold	Status
Maine	Discovered: Sep 22, 2020 → Filed with AG: Oct 11, 2020	19d	30 days	ME AG ≤30d

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.maine.gov/agviewer/content/ag/985235c7-cb95-4be2-8792-a1252b4f8318/0ebdd849-0c84-4675-8a99-cc1dcebdf09f.shtml
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Oct 11, 2020
Raw hash: 185a69b7dd83d27942809618435fb9033ac1fe354e7007fa7e14ef5362173740

Reporting entityUSCC Services, LLC

Victim entityUSCC Services, LLC

Incidentdiscovered Sep 22, 2020

Stated responseSent written notification to affected consumers

ComplianceME AG ≤30d

Extraction provenanceno artifact recorded

Source provenancewww.maine.gov