Social EngineeringFinancial ServicesFinancePhishingCustomer Data InvolvedIdentity (basic)Government IDMediumContained

Markel Insurance Group, LLC

bd_e73a45109de9c0e0 · schema v1 · pii pii-v1

Severity

Medium

Discovered

—

Filed

Jul 2, 2026

To disclose

—

Affected

Not disclosed

Linked

3 filings

Confidence

66%

Full breach record for Markel Insurance Group, LLC →

Markel Insurance notified Nebraska AG of a security event where unauthorized actors used social engineering (phishing) to gain access to systems between March 17-18, 2026. The incident involved personal information of affected individuals. Markel engaged third-party investigators, notified law enforcement, and is offering two years of complimentary credit monitoring and identity restoration services via TransUnion.

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Incident timeline

Mar 17, 2026

Begins

Jul 2, 2026

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

California State AGbd_8c9ddf184adb79d02026-07-02Verified
Texas State AGbd_09f9975787cc4a292026-07-07 · +5dCandidate

Name: Markel Insurance Group, LLC
norm: markel insurance

Name: Markel Insurance Group, LLC
norm: markel insurance
Industry: Financial Servicesllm

Discovered: —
Breach occurred: Mar 17, 2026 – Mar 18, 2026
Materiality determined: —
Notification sent: Jul 2, 2026
Affected individuals: Not disclosed
Data types: Identity (basic)Government ID
Attack vector: Phishing
MITRE ATT&CK: T1566.002 Spearphishing Link
Threat actor: ExternalFinancial
Initial access: phishing_link

During the incident: Engaged third-party security experts to conduct an investigation
Notified law enforcement regarding this incident
Offered two years of complimentary credit monitoring and identity restoration services through TransUnion
Changes made: Strengthening its systems, including enhancing our security and monitoring controls
Strengthening IT security and data privacy controls
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 · 3 filings · 3 states

View merged incident ↗

California State AGJul 2 · first

Nebraska State AGJul 2 · first · this page

Texas State AG+5d

Pattern: first filing Jul 2 (CA), last Jul 7 (TX) — a 5-day rolling notification. Rolling spreads often mean counsel is filing as thresholds trip per state. Why this link?

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/a3da9ca7-56f6-44bc-a194-9b6c4beefdaf.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Jul 2, 2026
Raw hash: 25e910fdd7989e7f4c1586efd27a73ff86fc8e1455b12acc0a4faacd2f9dfce2

Linked disclosures

Regulatory filings (2) · sorted by filing gap

Reporting entityMarkel Insurance Group, LLC

Victim entityMarkel Insurance Group, LLC

IncidentPhishing

Stated responseEngaged third-party security experts to conduct an investigation

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancenebraska.gov