Social EngineeringHealthcareFinancial ServicesHealthcarePhishingStolen CredentialsCustomer Data InvolvedMulti-Stage ChainHealth (basic)Identity (basic)Government IDPHIMediumContained

HUMANA INC.

bd_d2acc919c05f8728 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Nov 1, 2024

Filed

May 12, 2025

To disclose

27 weeks

Affected

922state residents only

Confidence

69%

Full breach record for HUMANA INC. →40 incidents on file

MedicareCompareUSA filed a Washington AG notice on behalf of Humana regarding a phishing incident affecting 922 WA residents. Unauthorized access to email accounts occurred Nov 5-21, 2024. Data exposed included names, DOBs, Medicare/Medicaid numbers, and SSNs. Notices sent May 12, 2025. Credit monitoring offered.

J jump to incidentP pin to compareR raw source

Washington clock✗ WA AG >90d27 weeks discovery → filing

Incident timeline

Nov 5, 2024

Begins

May 12, 2025

Filed

vs. sector median

+15 wks slower

Tracked as a single-filing incident — the only disclosure on record for this event so far.Confirmed922 affectedView incident

Name: MedicareCompareUSA
norm: medicarecompareusa
Domain: medicarecompareusa.com

Name: HUMANA INC.
norm: humana
Domain: humana.com
Industry: HealthcarellmFinancial Servicesllm

Discovered: Nov 1, 2024
Breach occurred: Nov 5, 2024 – Nov 21, 2024
Materiality determined: —
Notification sent: May 12, 2025
Affected individuals: 922state-resident count only
Data types: Identity (basic)Government IDHealth (basic)
Data elements: NameSocial Security numberDate of birthHealth insurance IDMedical information
WA-stated cause: Cyberattack
WA-stated duration: lifecycle 1-99dexposure 1-99d
WA-stated discovery: Found while ongoing
Attack vector: Phishing
MITRE ATT&CK: T1566.002 Spearphishing LinkT1078 Valid Accounts
Threat actor: ExternalFinancial
Regulator citations: Providing written notice of this incident to relevant state and federal regulators
Initial access: phishing_link

During the incident: Immediately took steps to secure its environment
Launched an investigation to determine the nature and scope of the activity
Providing access to credit monitoring services for one (1) year, through Transunion
Providing impacted individuals with guidance on how to better protect against identity theft and fraud
Providing written notice of this incident to relevant state and federal regulators
Providing written notice to the three major credit reporting agencies
Changes made: Implementing additional safeguards and training to its employees
Implemented additional cybersecurity measures
Reviewed existing security policies to further protect against similar events moving forward
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 27 weeks(192 days from discovery to filing)
Compliance flags: WA AG >90d
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://agportal-s3bucket.s3.amazonaws.com/databreach/BreachA33300.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: May 12, 2025
Raw hash: 930cbbeff9444713911aca93ce6a9de9589591d294a3864e19e82d65b5aa788c

Reporting entityMedicareCompareUSA

Victim entityHUMANA INC.

Incidentdiscovered Nov 1, 2024

Stated responseImmediately took steps to secure its environment

ComplianceWA AG >90d

Extraction provenanceno artifact recorded

Source provenanceagportal-s3bucket.s3.amazonaws.com