MisuseIdentity (basic)Government IDPIIMediumContained

ONE GAS, INC.

bd_70849e6485cfa4ff · schema v1 · pii pii-v1

Severity

Medium

Discovered

Jan 20, 2026

Filed

Mar 27, 2026

To disclose

—

Affected

Not disclosed

Linked

2 filings

Confidence

66%

Full breach record for ONE GAS, INC. →

ONE Gas, Inc. notified Nebraska residents of a data breach involving an independent contractor who worked under a false identity. The contractor accessed systems containing names, contact info, health benefits enrollment data, and Social Security numbers. ONE Gas discovered the incident on January 20, 2026, terminated access, notified federal authorities, and engaged forensic investigators. Affected individuals are offered two years of credit monitoring.

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Incident timeline

Jan 20, 2026

Discovered

Mar 27, 2026

Filed

This filing is one of 2 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (1) · sorted by filing gap

Texas State AGbd_ac7140ffc2db46452026-03-30 · +3dCandidate

Name: ONE GAS, INC.
norm: one gas

Name: ONE GAS, INC.
norm: one gas

Discovered: Jan 20, 2026
Materiality determined: —
Notification sent: Mar 27, 2026
Affected individuals: Not disclosed
Data types: Identity (basic)Government IDPII
Attack vector: Insider
MITRE ATT&CK: T1078 Valid Accounts
Threat actor: Internal
Initial access: insider_action

During the incident: Activated its incident response process
Remove the individual’s access to our systems
Notify the appropriate federal authority
Hire a third-party cybersecurity firm to conduct a forensic review
Changes made: Offering you two years of free credit monitoring and identity protection services from IDX
Source: Quoted from the filing itself, not independently verified.

Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 2 filings · 2 states

View merged incident ↗

Nebraska State AGMar 27 · first · this page

Texas 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.

Source URL: https://nebraska.gov/ago/data-breach/documents/02c2e3bb-36cc-4261-85d1-3b076ce997c2.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Mar 27, 2026
Raw hash: d54c6794d3945d44c484a2743665dd02a908c212f0451f43b34462a4c22383c4

Linked disclosures

Regulatory filings (1) · sorted by filing gap

Reporting entityONE GAS, INC.

Victim entityONE GAS, INC.

Incidentdiscovered Jan 20, 2026

Stated responseActivated its incident response process

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancenebraska.gov