HackingEnergy & UtilitiesUtilitiesVulnerability ExploitData ExfiltratedCustomer Data InvolvedEmployee Data InvolvedIdentity (basic)Government IDMediumContained

EL PASO ELECTRIC COMPANY

bd_ae2f98f4bd6f1b77 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Feb 16, 2021

Filed

Mar 22, 2021

To disclose

5 weeks

Affected

2state residents only

Linked

3 filings

Confidence

66%

Full breach record for EL PASO ELECTRIC COMPANY →2 incidents on file

El Paso Electric Company notified Montana residents of a data security incident involving unauthorized access to its Accellion FTA file transfer platform. The breach, occurring Dec 22-24, 2020, exposed names and SSNs of employees and retirees. EPE contacted law enforcement, took the platform offline, and offered credit monitoring.

J jump to incidentP pin to compareR raw source

Incident timeline

undetected · 56 days

discovery → filing · 5 weeks / 34 days

Dec 22, 2020

Begins

Feb 16, 2021

Discovered

Mar 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

Indiana State AGbd_01536f8fee7c9dcb2021-03-22Verified
Massachusetts State AGbd_805376a6317913932021-03-22Verified

Name: EL PASO ELECTRIC COMPANY
norm: el paso electric

Name: EL PASO ELECTRIC COMPANY
norm: el paso electric
Industry: Energy & Utilitiesllm

Discovered: Feb 16, 2021
Breach occurred: Dec 22, 2020 – Dec 24, 2020
Undetected for: 56 daysoccurrence → discovery
Materiality determined: —
Notification sent: —
Affected individuals: 2state-resident count only
Data types: Identity (basic)Government ID
Attack vector: Third-Party / Supply Chain
MITRE ATT&CK: T1190 Exploit Public-Facing ApplicationT1078 Valid Accounts
Threat actor: ExternalFinancial
Initial access: exploit_public_facing

During the incident: Contacted law enforcement
Launched an investigation
Worked diligently to identify any files that may have been subject to unauthorized access
Offering all employees a complimentary one-year membership in Experian’s IdentityWorksSM
Changes made: Taken the Accellion FTA offline permanently
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 5 weeks(34 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 3 filings · 3 states

View merged incident ↗

Indiana State AGMar 22 · first

Massachusetts State AGMar 22 · first

Montana State AGMar 22 · first · this page

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/EL-Paso-Notif.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Mar 22, 2021
Raw hash: 6159f4c268f47007d1cc4cf552bb7b3ecffea128e77e07b8089b8f9111cdcc1a

Linked disclosures

Regulatory filings (2) · sorted by filing gap

Reporting entityEL PASO ELECTRIC COMPANY

Victim entityEL PASO ELECTRIC COMPANY

Incidentdiscovered Feb 16, 2021

Stated responseContacted law enforcement

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancedojmt.gov