HackingFinancial ServicesFinanceData ExfiltratedCustomer Data InvolvedIdentity (basic)Government IDEmploymentMediumContained

Nationwide Mutual Insurance Company

bd_876be92e8b7f3a24 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Oct 3, 2012

Filed

Nov 16, 2012

To disclose

6 weeks

Affected

Not disclosed

Confidence

65%

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

Nationwide Mutual Insurance Company disclosed a criminal intrusion on its computer network on October 3, 2012. The attacker likely stole personal information including names, Social Security numbers, driver's license numbers, dates of birth, and possibly marital status, gender, occupation, and employer information. The company contained the intrusion, engaged third-party experts, and notified law enforcement. Affected individuals were offered one year of free credit monitoring and identity theft protection.

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California clockDiscovered Oct 3, 2012 → Notified Nov 16, 201244d ✓ CA 60-day OK6 weeks discovery → filing

Incident timeline

discovery → filing · 6 weeks / 44 days

Oct 3, 2012

Begins

Oct 3, 2012

Discovered

Nov 16, 2012

Filed

vs. sector median

3 wks faster

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

Name: Nationwide Mutual Insurance Company
norm: nationwide mutual insurance
Domain: nationwide.com

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

Discovered: Oct 3, 2012
Breach occurred: Oct 3, 2012
Undetected for: 0 daysoccurrence → discovery
Materiality determined: —
Notification sent: Nov 16, 2012
Affected individuals: Not disclosed
Data types: Identity (basic)Government IDEmployment
Data elements: Date of birth
Attack vector: Unauthorized Access
MITRE ATT&CK: T1041 Exfiltration Over C2 Channel
Threat actor: External
Regulator citations: Reported this criminal attack to law enforcement authorities

During the incident: Took immediate steps to contain the intrusion
Promptly initiated an investigation of the attack
Reported this criminal attack to law enforcement authorities
Retained a third-party expert to analyze the impacted data
Offering a free credit-monitoring and identity theft protection product for one year
Changes made: Taken steps that will prevent this type of attack from happening again
Committed to enhancing our defenses against these kinds of attacks
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 6 weeks(44 days from discovery to filing)
Compliance flags: CA 60-day OK · 44d
Discovery-date grounding: letter-groundedThe discovery date is the detection date narrated in the notification letter — the defensible tier.
Clock breakdown: Statute Window Elapsed Threshold Status
California
Discovered: Oct 3, 2012
→ Notified: Nov 16, 2012
44d 60 days (analyst band, pre-2026 discoveries) CA 60-day OK

Statute	Window	Elapsed	Threshold	Status
California	Discovered: Oct 3, 2012 → Notified: Nov 16, 2012	44d	60 days (analyst band, pre-2026 discoveries)	CA 60-day OK

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://oag.ca.gov/ecrime/databreach/reports/sb24-36995
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Nov 16, 2012
Raw hash: f99dba3d56d35f796634461102d407b7cf99261ca5b5c89998583a3c92b1ab20

Reporting entityNationwide Mutual Insurance Company

Victim entityNationwide Mutual Insurance Company

Incidentdiscovered Oct 3, 2012

Stated responseTook immediate steps to contain the intrusion

ComplianceCA 60-day OK

Extraction provenanceno artifact recorded

Source provenanceoag.ca.gov