HackingHealthcareTechnologyHealthcareVulnerability ExploitData ExfiltratedTargetedMulti-Stage ChainIdentity (basic)Government IDHealth (basic)PHIHighContained

CenterWell Pharmacy Inc.

bd_17c29cb5854af36a · schema v1 · pii pii-v1

Severity

High

Discovered

Jul 26, 2023

Filed

Dec 15, 2023

To disclose

20 weeks

Affected

12,222state residents only

Confidence

68%

Full breach record for CenterWell Pharmacy Inc. →4 incidents on file

Welltok, Inc. filed a supplemental notice with Washington AG regarding a MOVEit Transfer server compromise affecting Centerwell Pharmacy data. Access occurred May 30, 2023; discovered July 26, 2023. 12,222 WA residents affected. Data included PHI, SSN, DOB. Third-party specialists engaged; credit monitoring offered.

J jump to incidentP pin to compareR raw source

Washington clock⏱ WA AG >30d20 weeks discovery → filing

Incident timeline

undetected · 57 days

discovery → filing · 20 weeks / 142 days

May 30, 2023

Begins

Jul 26, 2023

Discovered

Dec 15, 2023

Filed

vs. sector median

+8 wks slower

Tracked as a single-filing incident — the only disclosure on record for this event so far.Confirmed12,222 affectedView incident

Name: Welltok, Inc.
norm: welltok

Name: CenterWell Pharmacy Inc.
norm: centerwell pharmacy
Industry: HealthcarellmTechnologyllm

Discovered: Jul 26, 2023
Breach occurred: May 30, 2023
Undetected for: 57 daysoccurrence → discovery
Materiality determined: —
Notification sent: Dec 13, 2023
Affected individuals: 12,222state-resident count only
Data types: Identity (basic)Government IDHealth (basic)PHI
Data elements: NameDate of birthHealth insurance IDMedical 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
Regulator citations: Filed supplemental notice with Washington State Office of the Attorney General
Initial access: exploit_public_facing

During the incident: Launched an additional investigation with the assistance of third-party cybersecurity specialists
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
Reviewing and enhancing existing policies and procedures related to data privacy
Changes made: Reviewing and enhancing existing policies and procedures related to data privacy to reduce the likelihood of a similar future event
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 20 weeks(142 days from discovery to filing)
Compliance flags: WA 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://agportal-s3bucket.s3.amazonaws.com/databreach/BreachM16500.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Dec 15, 2023
Raw hash: e52f449b42dbdc6c442f5581777b2a5c64a351738e64b89a8e0448c086faa5cb

Reporting entityWelltok, Inc.

Victim entityCenterWell Pharmacy Inc.

Incidentdiscovered Jul 26, 2023

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

ComplianceWA AG >30d

Extraction provenanceno artifact recorded

Source provenanceagportal-s3bucket.s3.amazonaws.com