HackingHealthcareTechnologyHealthcareVulnerability ExploitCapture Stored DataData ExfiltratedTargetedIdentity (basic)Government IDPHIHealth (basic)HighContained

CVS

bd_c1b62916b13de301 · schema v1 · pii pii-v1

Severity

High

Discovered

Jul 26, 2023

Filed

Apr 16, 2024

To disclose

38 weeks

Affected

4,479state residents only

Confidence

69%

Full breach record for CVS →

Welltok, Inc. reported a supplemental data event for the Blue Cross Blue Shield Federal Employee Program. An unknown actor exploited vulnerabilities in the MOVEit Transfer server on May 30, 2023, exfiltrating names, DOBs, and Medicare IDs. Welltok was alerted on July 26, 2023. Notices were sent to 4,479 Washington residents starting Jan 23, 2024. Credit monitoring via Experian was offered.

J jump to incidentP pin to compareR raw source

Washington clock✗ WA AG >90d38 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 · 57 days

discovery → filing · 38 weeks / 265 days

May 30, 2023

Begins

Jul 26, 2023

Discovered

Apr 16, 2024

Filed

vs. sector median

+25 wks slower

Tracked as a single-filing incident — the only disclosure on record for this event so far.Confirmed4,479 affectedView incident

Name: Welltok, Inc.
norm: welltok

Name: CVS
norm: cvs
Industry: HealthcarellmTechnologyllm

Discovered: Jul 26, 2023
Breach occurred: May 30, 2023
Undetected for: 57 daysoccurrence → discovery
Materiality determined: —
Notification sent: Jan 23, 2024
Affected individuals: 4,479state-resident count only
Data types: Identity (basic)Government ID
Data elements: NameDate of birthMedical information
WA-stated cause: Cyberattack
WA-stated duration: lifecycle Unknowndexposure Unknownd
WA-stated discovery: Found after the fact
Attack vector: Misconfiguration
MITRE ATT&CK: T1190 Exploit Public-Facing ApplicationT1041 Exfiltration Over C2 Channel
Threat actor: ExternalFinancial
Initial access: exploit_public_facing

During the incident: Launched an additional investigation with the assistance of third-party cybersecurity specialists
Conducted an examination of its systems and networks
Providing access to credit monitoring services for twelve (12) to twenty-four (24) months... through Experian
Providing impacted individuals with guidance on how to better protect against identity theft and fraud
Changes made: Reviewing and enhancing its existing policies and procedures related to data privacy
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 38 weeks(265 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/BreachM16689.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Apr 16, 2024
Raw hash: 922b700bc6ad211b4a8d4f5036ecad8778672f4061c8c802da28075c56142329

Reporting entityWelltok, Inc.

Victim entityCVS

Incidentdiscovered Jul 26, 2023

Stated responseLaunched an additional investigation with the assistance of third-party cybersecurity specialists

ComplianceWA AG >90d

Extraction provenanceno artifact recorded

Source provenanceagportal-s3bucket.s3.amazonaws.com