AccidentalFinancial ServicesFinanceMisdeliveryCustomer Data InvolvedEmploymentIdentity (basic)Government IDHighResolved

METROPOLITAN LIFE INSURANCE CO

bd_cfd5bfe2ef28f6d9 · schema v1 · pii pii-v1

Severity

High

Discovered

Jan 29, 2026

Filed

Mar 9, 2026

To disclose

6 weeks

Affected

3state residents only

Linked

2 filings

Confidence

64%

Full breach record for METROPOLITAN LIFE INSURANCE CO →46 incidents on file

Metropolitan Life Insurance Company notified individuals that on January 29, 2026, an associate inadvertently emailed a file containing Social Security numbers, names, coverage types, start dates, and group numbers to an HR administrator at another MetLife group customer. The recipient notified MetLife the same day and confirmed deletion. MetLife offered 18 months of credit monitoring.

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Massachusetts clock⏱ MA AG >30d6 weeks discovery → filing

Incident timeline

discovery → filing · 6 weeks / 39 days

Jan 29, 2026

Begins

Jan 29, 2026

Discovered

Mar 9, 2026

Filed

vs. sector median

3 wks faster

This filing is one of 2 filings about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (1) · sorted by filing gap

California State AGbd_7fa595e81325ea6d2026-03-09Verified

Name: METROPOLITAN LIFE INSURANCE CO
norm: metropolitan life insurance
Domain: metlife.com

Name: METROPOLITAN LIFE INSURANCE CO
norm: metropolitan life insurance
Domain: metlife.com
Industry: Financial Servicesllm

Discovered: Jan 29, 2026
Breach occurred: Jan 29, 2026
Undetected for: 0 daysoccurrence → discovery
Materiality determined: —
Notification sent: Mar 6, 2026
Affected individuals: 3state-resident count only
Data types: EmploymentIdentity (basic)Government ID
Data elements: Social Security number
Attack vector: Unknown
Threat actor: Internal

During the incident: Arranged for enrollment in an online three-bureau credit monitoring service (myTrueIdentity) for not less than eighteen (18) months
Changes made: Taking steps to prevent this from happening again
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 6 weeks(39 days from discovery to filing)
Compliance flags: MA AG >30d
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.

Filing propagation · 2 filings · 2 states

View merged incident ↗

California State AGMar 9 · first

Massachusetts State AGMar 9 · 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://www.mass.gov/doc/2026-348-metropolitan-life-insurance-company/download
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Mar 9, 2026
Raw hash: 94c6919a48b92240b9d01f9c71aecc8f914613ea490d7c2af35533aa8d12cba3

Linked disclosures

Regulatory filings (1) · sorted by filing gap

Reporting entityMETROPOLITAN LIFE INSURANCE CO

Victim entityMETROPOLITAN LIFE INSURANCE CO

Incidentdiscovered Jan 29, 2026

Stated responseArranged for enrollment in an online three-bureau credit monitoring service (myTrueIdentity) for not less than eighteen (18) months

ComplianceMA AG >30d

Extraction provenanceno artifact recorded

Source provenancewww.mass.gov