HackingHealthcareFinancial ServicesHealthcarePhishingStolen CredentialsCustomer Data InvolvedMulti-Stage ChainFinancial accountHealth (basic)Identity (basic)Government IDPHIMediumContained

Medicare CompareUSA filing on behalf of Aetna

bd_bb3bcacaa5bc352a · schema v1 · pii pii-v1

Severity

Medium

Discovered

Nov 1, 2024

Filed

Sep 10, 2025

To disclose

45 weeks

Affected

808state residents only

Confidence

69%

Full breach record for Medicare CompareUSA filing on behalf of Aetna →

Medicare CompareUSA (MCUSA) reported unauthorized access to email accounts in November 2024, affecting 808 Washington residents. The incident involved access to names, SSNs, DOBs, health insurance policy numbers, and medical information. MCUSA notified affected individuals on September 10, 2025, and provided one year of credit monitoring.

J jump to incidentP pin to compareR raw source

Washington clock✗ WA AG >90d45 weeks discovery → filing

Incident timeline

Nov 5, 2024

Begins

Sep 10, 2025

Filed

vs. sector median

+32 wks slower

Tracked as a single-filing incident — the only disclosure on record for this event so far.Confirmed808 affectedView incident

Name: Medicare CompareUSA filing on behalf of Aetna
norm: medicare compareusa filing on behalf of aetna

Name: Medicare CompareUSA filing on behalf of Aetna
norm: medicare compareusa filing on behalf of aetna
Industry: HealthcarellmFinancial Servicesllm

Discovered: Nov 1, 2024
Breach occurred: Nov 5, 2024 – Nov 21, 2024
Materiality determined: —
Notification sent: Sep 10, 2025
Affected individuals: 808state-resident count only
Data types: Identity (basic)Government IDHealth (basic)Financial account
Data elements: NameSocial Security numberDate of birthHealth insurance IDMedical information
WA-stated cause: Unauthorized Access
WA-stated duration: lifecycle 300-399dexposure 300-399d
WA-stated discovery: Found while ongoing
Attack vector: Phishing
MITRE ATT&CK: T1566.002 Spearphishing LinkT1078 Valid AccountsT1114 Email Collection
Threat actor: ExternalFinancial
Regulator citations: Notifying the U.S. Department of Health and Human ServicesProviding written notice to relevant state and federal regulatorsNotifying the three major credit reporting agencies, Equifax, Experian, and TransUnion
Initial access: phishing_link

During the incident: MCUSA immediately took steps to secure its environment and launched an investigation
MCUSA began an extensive review of the accounts
MCUSA notified Aetna/CVS that individuals related to Aetna/CVS were potentially involved
MCUSA is providing access to credit monitoring services for one (1) year, through Transunion
MCUSA is providing impacted individuals with guidance on how to better protect against identity theft and fraud
MCUSA is providing written notice of this incident to relevant state and federal regulators
MCUSA is notifying the U.S. Department of Health and Human Services
Changes made: MCUSA is working to implement additional safeguards and training to its employees
We implemented additional cybersecurity measures and reviewed existing security policies
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 45 weeks(313 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/BreachA34630.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Sep 10, 2025
Raw hash: abe124cca6a4d7036c61e2f8f47dde2957126152c089aff248080729ec87fef0

Reporting entityMedicare CompareUSA filing on behalf of Aetna

Victim entityMedicare CompareUSA filing on behalf of Aetna

Incidentdiscovered Nov 1, 2024

Stated responseMCUSA immediately took steps to secure its environment and launched an investigation

ComplianceWA AG >90d

Extraction provenanceno artifact recorded

Source provenanceagportal-s3bucket.s3.amazonaws.com