AccidentalFinancial ServicesHealthcareFinanceMisdeliveryCustomer Data InvolvedHealth (basic)Identity (basic)Government IDPHIMediumResolved

METROPOLITAN LIFE INSURANCE CO

bd_560b23f1bbcc03f9 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Dec 11, 2025

Filed

Jan 14, 2026

To disclose

5 weeks

Affected

1state residents only

Confidence

64%

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

Metropolitan Life Insurance Company mistakenly sent personal information, including names, addresses, SSNs, dates of birth, and health/medical information, to an inadvertent recipient on December 10, 2025. The error was discovered on December 11, 2025, and the recipient was instructed to destroy the document. MetLife provided corrective action and coaching to the responsible associate and offered 18 months of credit monitoring to affected individuals.

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Massachusetts clock⏱ MA AG >30d5 weeks discovery → filing

Incident timeline

undetected · 1 days

discovery → filing · 5 weeks / 34 days

Dec 10, 2025

Begins

Dec 11, 2025

Discovered

Jan 14, 2026

Filed

vs. sector median

4 wks faster

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

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 ServicesllmHealthcarellm

Discovered: Dec 11, 2025
Breach occurred: Dec 10, 2025
Undetected for: 1 dayoccurrence → discovery
Materiality determined: —
Notification sent: Jan 15, 2026
Affected individuals: 1state-resident count only
Data types: Health (basic)Identity (basic)Government IDPHI
Data elements: Social Security numberDate of birthMedical information
Attack vector: Unknown

During the incident: Instructed the recipient to destroy the document
Provided corrective action and coaching to the responsible associate
Arranged for enrollment in an online three-bureau credit monitoring service (myTrueIdentity)
Changes made: Provided corrective action and coaching to the responsible associate to prevent recurrence
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 5 weeks(34 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.

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/2026-62-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: Jan 14, 2026
Raw hash: 8c6168d12cf62c6815d26d6e67e6fc8aaf362559e4790795760679b21b5892fa

Reporting entityMETROPOLITAN LIFE INSURANCE CO

Victim entityMETROPOLITAN LIFE INSURANCE CO

Incidentdiscovered Dec 11, 2025

Stated responseInstructed the recipient to destroy the document

ComplianceMA AG >30d

Extraction provenanceno artifact recorded

Source provenancewww.mass.gov