HackingTechnologyInformationStolen CredentialsData ExfiltratedCustomer Data InvolvedIdentity (basic)Government IDHealth (basic)MediumContained

ESS Metron

bd_ec98db0840a16d32 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Jun 16, 2026

Filed

Aug 3, 2026

To disclose

—

Affected · nationwide

41 in this filing

Confidence

65%

Full breach record for ESS Metron →2 incidents on file

ESS Metron experienced unauthorized access to its computer systems between January 31 and February 4, 2026. An unauthorized actor copied files containing names, dates of birth, Social Security numbers, driver's license numbers, and limited medical information. The breach affected 4 individuals (1 Nebraska resident, 3 Colorado residents). ESS Metron engaged a cybersecurity firm, secured its network, and mailed notification letters on August 3, 2026, offering one year of credit monitoring.

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Leak gap clock⏱ Leak >90d

Incident timeline

undetected · 136 days

Jan 31, 2026

Begins

Jun 16, 2026

Discovered

Aug 3, 2026

Filed

Tracked as a single-filing incident — the only disclosure on record for this event so far.Confirmed4 affectedView incident

A leak claim by play about this victim predates this filing by 176 days.View originating leak claim

Name: ESS Metron
norm: ess metron
Domain: essmetron.com

Name: ESS Metron
norm: ess metron
Domain: essmetron.com
Industry: Technologyllm

Discovered: Jun 16, 2026
Breach occurred: Jan 31, 2026 – Feb 4, 2026
Undetected for: 136 daysoccurrence → discovery
Materiality determined: —
Notification sent: Aug 3, 2026
Affected individuals: 4state + nationwide
Data types: Identity (basic)Government IDHealth (basic)
Data elements: Social Security numberDate of birthMedical information
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid Accounts
Threat actor: External
Initial access: valid_credentials

During the incident: Engaged a cybersecurity firm to assist with the investigation
Secured its network
Mailed a notification letter via First-Class mail to the affected resident
Established a dedicated, toll-free call center
Changes made: Enhanced its existing security measures
Source: Quoted from the filing itself, not independently verified.

Compliance flags: Leak >90d
Discovery-date grounding: letter-groundedThe discovery date is the detection date narrated in the notification letter — the defensible tier.

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://nebraska.gov/ago/data-breach/documents/170cbcad-2e7b-4763-b25a-7e8a1a0adcf3.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Aug 3, 2026
Raw hash: d603c1e810d47ed609625c06dc924ee579b25ed49c08810b58ab0c3183493bef

Reporting entityESS Metron

Victim entityESS Metron

Incidentdiscovered Jun 16, 2026

Stated responseEngaged a cybersecurity firm to assist with the investigation

ComplianceLeak >90d

Extraction provenanceno artifact recorded

Source provenancenebraska.gov