AccidentalFinancial ServicesFinanceMisconfigurationCustomer Data InvolvedIdentity (basic)Government IDMediumResolved

Nationwide Mutual Insurance Company

bd_74d2ec91e88fe239 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Apr 8, 2021

Filed

Apr 12, 2021

To disclose

4 days

Affected

1state residents only

Confidence

66%

Full breach record for Nationwide Mutual Insurance Company →4 incidents on file

Nationwide Mutual Insurance Company notified Montana residents of a data security incident where a software development error on its insurance quoting website improperly displayed names and driver's license numbers between Feb 6 and Apr 3, 2021. The error was discovered on April 8, 2021. Nationwide offered one year of free credit monitoring.

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Incident timeline

undetected · 61 days

discovery → filing · 4 days

Feb 6, 2021

Begins

Apr 8, 2021

Discovered

Apr 12, 2021

Filed

vs. sector median

8 wks faster

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

Name: Nationwide Mutual Insurance Company
norm: nationwide mutual insurance

Name: Nationwide Mutual Insurance Company
norm: nationwide mutual insurance
Industry: Financial Servicesllm

Discovered: Apr 8, 2021
Breach occurred: Feb 6, 2021 – Apr 3, 2021
Undetected for: 61 daysoccurrence → discovery
Materiality determined: —
Notification sent: —
Affected individuals: 1state-resident count only
Data types: Identity (basic)Government ID
Attack vector: Misconfiguration
MITRE ATT&CK: T1190 Exploit Public-Facing Application

During the incident: Launched an investigation to identify the primary cause
Took steps to correct the error
Taken additional steps to help prevent a similar type of incident from occurring in the future
Offering you a free credit-monitoring and identity theft protection product for one year
Changes made: Correct the error
Taken additional steps to help prevent a similar type of incident from occurring in the future
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 4 days(4 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/Nationwide-notif.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Apr 12, 2021
Raw hash: eff1d90ed9ebdd46e28af8881658176d120ba4575113ff29b697411135bff54a

Reporting entityNationwide Mutual Insurance Company

Victim entityNationwide Mutual Insurance Company

Incidentdiscovered Apr 8, 2021

Stated responseLaunched an investigation to identify the primary cause

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancedojmt.gov