Social EngineeringHealthcareHealthcarePhishingStolen CredentialsCustomer Data InvolvedMulti-Stage ChainIdentity (basic)Government IDPHIHealth (basic)HighContained

WELLPOINT WASHINGTON, INC.

bd_ec5cf7ef81db44cb · schema v1 · pii pii-v1

Severity

High

Discovered

Mar 2, 2026

Filed

Jun 2, 2026

To disclose

13 weeks

Affected

12,017state residents only

Confidence

71%

Full breach record for WELLPOINT WASHINGTON, INC. →2 incidents on file

Wellpoint Washington, Inc. reported a phishing incident affecting 12,017 Washington residents. The breach occurred June 24-July 2, 2025, involving unauthorized access to an email account via a phishing attack by business associate Clinics of Washington. Wellpoint discovered the incident on March 2, 2026. Exposed data included PHI, SSNs, DOBs, and driver's licenses. Remediation included credit monitoring services.

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Washington clock✗ WA AG >90d13 weeks discovery → filing

⚠ AG web formThe discovery date came from the AG web-form field, which is systematically later than the detection date stated in the letter. Treat the clock as indicative.

Incident timeline

undetected · 251 days

discovery → filing · 13 weeks / 92 days

Jun 24, 2025

Begins

Mar 2, 2026

Discovered

Jun 2, 2026

Filed

vs. sector median

+2 wks slower

Tracked as a single-filing incident — the only disclosure on record for this event so far.Confirmed12,017 affectedView incident

Name: Wellpoint, Inc.
norm: wellpoint

Name: WELLPOINT WASHINGTON, INC.
norm: wellpoint washington
Industry: Healthcarellm

Discovered: Mar 2, 2026
Breach occurred: Jun 24, 2025 – Jul 2, 2025
Undetected for: 251 daysoccurrence → discovery
Materiality determined: —
Notification sent: Jun 2, 2026
Affected individuals: 12,017state-resident count only
Data types: Identity (basic)Government IDPHIHealth (basic)
Data elements: NameSocial Security numberDriver's licence numberDate of birthHealth insurance IDMedical information
WA-stated cause: Unauthorized Access
WA-stated duration: lifecycle 200-299dexposure 1-99d
WA-stated discovery: Found after the fact
Attack vector: Phishing
MITRE ATT&CK: T1566.002 Spearphishing LinkT1078 Valid AccountsT1114 Email Collection
Threat actor: External
Regulator citations: Notified Washington Attorney General
Initial access: phishing_link

During the incident: Looked into what caused this issue
Offering a complimentary one-year membership of Experian’s IdentityWorks
Changes made: Taking steps to reduce the risk of this happening again
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 13 weeks(92 days from discovery to filing)
Compliance flags: WA AG >90d
Discovery-date grounding: AG web formThe discovery date came from the AG web-form field, which is systematically later than the detection date stated in the letter. Treat the clock as indicative.

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/BreachM24184.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Jun 2, 2026
Raw hash: 059444fcae44dc60997209a60350fc4f99c00bc79936c6e5af5b6f6f4b301c3d

Reporting entityWellpoint, Inc.

Victim entityWELLPOINT WASHINGTON, INC.

Incidentdiscovered Mar 2, 2026

Stated responseLooked into what caused this issue

ComplianceWA AG >90d

Extraction provenanceno artifact recorded

Source provenanceagportal-s3bucket.s3.amazonaws.com