HackingTelecom & MediaInformationStolen CredentialsCustomer Data InvolvedTargetedIdentity (basic)PIILowContained

CenturyLink Communications

bd_fa14cac8a000ab40 · schema v1 · pii pii-v1

Severity

Low

Discovered

Jan 17, 2025

Filed

Mar 6, 2025

To disclose

7 weeks

Affected

1state residents only

Confidence

65%

Full breach record for CenturyLink Communications →3 incidents on file

Lumen Technologies (dba CenturyLink) notified Montana residents of unauthorized access to customer files between Nov 15 and Dec 4, 2024. Discovered Jan 17, 2025. Files contained names and addresses. No evidence of misuse. Offering 24 months of credit monitoring via IDX.

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Incident timeline

undetected · 63 days

discovery → filing · 7 weeks / 48 days

Nov 15, 2024

Begins

Jan 17, 2025

Discovered

Mar 6, 2025

Filed

Tracked as a single-filing incident — the only disclosure on record for this event so far.Confirmed1 affectedView incident

Name: CenturyLink Communications
norm: centurylink communications

Name: CenturyLink Communications
norm: centurylink communications
Also named: CenturyLink Communications, LLCdba oflegal entity
Lumen Technologiesdba oftrade name
Industry: Telecom & Mediallm

Discovered: Jan 17, 2025
Breach occurred: Nov 15, 2024 – Dec 4, 2024
Undetected for: 63 daysoccurrence → discovery
Materiality determined: —
Notification sent: Mar 6, 2025
Affected individuals: 1state-resident count only
Data types: Identity (basic)PII
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid AccountsT1119 Automated Collection
Threat actor: External
Regulator citations: Notifying relevant state regulatory authorities
Initial access: valid_credentials

During the incident: Offering free identity theft protection services through IDX
Reviewing existing policies and procedures
Implementing additional safeguards
Notifying relevant state regulatory authorities
Changes made: Reviewing existing policies and procedures
Implementing additional safeguards
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 7 weeks(48 days from discovery to filing)
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://dojmt.gov/wp-content/uploads/2025/03/Consumer-notification-letter-113.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Mar 6, 2025
Raw hash: 1ff81f4c14b164ce6fde57e15481af9a0ee26cb585a9b183af7e6f1574d78e0f

Reporting entityCenturyLink Communications

Victim entityCenturyLink Communications

Incidentdiscovered Jan 17, 2025

Stated responseOffering free identity theft protection services through IDX

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancedojmt.gov