HackingTechnologyHealthcareInformationVulnerability ExploitCapture Stored DataData ExfiltratedTargetedCustomer Data InvolvedHealth (basic)Identity (basic)Government IDPHIHighContained

Welltok

bd_bece9166c4e3c638 · schema v1 · pii pii-v1

Severity

High

Discovered

Jul 26, 2023

Filed

Nov 18, 2023

To disclose

16 weeks

Affected

1,606state residents only

Linked

22 filings

Confidence

71%

Full breach record for Welltok →3 incidents on file

Welltok, Inc. reported a cyberattack affecting 1,606 Washington residents. An unknown actor exploited vulnerabilities in Welltok's MOVEit Transfer server on May 30, 2023, to exfiltrate data including names, DOBs, addresses, and medication info. Welltok detected the compromise on July 26, 2023, and notified affected individuals starting November 18, 2023, offering credit monitoring.

J jump to incidentP pin to compareR raw source

Washington clock✗ WA AG >90d16 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 · 16 weeks / 115 days

May 30, 2023

Begins

Jul 26, 2023

Discovered

Nov 18, 2023

Filed

vs. sector median

+4 wks slower

This filing is one of 22 filings about the same incident.View merged incident

Part of Progress Software Corporation supply-chain incident (2023) — a supply-chain cascade affecting multiple organizations.View cascade →

Linked disclosures

Why this link?

Regulatory filings (10) · sorted by filing gap

Maine State AGbd_063b1deb8c7a2bff2023-12-15 · +27dVerified by operator
Vermont State AGbd_69d99adc86ef4dcf2023-12-15 · +27dVerified
California State AGbd_b765e398c9850ca12023-12-15 · +27dVerified
Maine State AGbd_0328ea1fdab9c4592023-12-22 · +34dVerified by operator

Show 6 more filings ↓up to 188d gap

California State AGbd_5e4b7107bd1176de2023-12-22 · +34dVerified
Vermont State AGbd_8ca9e17ac4dfbe9b2023-12-22 · +34dVerified
New Hampshire State AGbd_db6e6d3e58b51e902023-12-22 · +34dVerified
California State AGbd_cf54a7692c42c7aa2024-01-08 · +51dVerified by operator
California State AGbd_d2c5cdddd25b96d92024-02-28 · +102dVerified by operator
South Carolina State AGbd_57aa66e4578bd8912024-05-24 · +188dVerified by operator

Showing first 10 of 21 linked disclosures.

Name: Welltok
norm: welltok
Domain: welltok.com

Name: Welltok
norm: welltok
Domain: welltok.com
Industry: TechnologyllmHealthcarellm

Discovered: Jul 26, 2023
Breach occurred: May 30, 2023 – May 31, 2023
Undetected for: 57 daysoccurrence → discovery
Materiality determined: —
Notification sent: Nov 18, 2023
Affected individuals: 1,606state-resident count only
Data types: Identity (basic)Government IDHealth (basic)
Data elements: NameDate of birthHealth insurance IDMedical information
WA-stated cause: Cyberattack
WA-stated duration: lifecycle 1-99dexposure 1-99d
WA-stated discovery: Found after the fact
Attack vector: Unauthorized Access
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
Provided 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: 16 weeks(115 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.

Filing propagation · 11 filings · 6 states

View merged incident ↗

Washington State AGNov 18 · first · this page

Maine State AG+27d

Vermont State AG+27d

California State AG+27d

Maine State AG+34d

California State AG+34d

Vermont State AG+34d

New Hampshire State AG+34d

California State AG+51d

California State AG+102d

South Carolina State AG+188d

Pattern: first filing Nov 18 (WA), last May 24 (SC) — a 188-day rolling notification. Rolling spreads often mean counsel is filing as thresholds trip per state. Why this link?

Cascade drawn from the first 10 linked disclosures of 21 — the full spread may be wider.

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/BreachA27060.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Nov 18, 2023
Raw hash: d6ba444a2057914b25022e141678ac59870d0c9992df0c90fc8372e4a4bbe837

Linked disclosures

Regulatory filings (10) · sorted by filing gap

Reporting entityWelltok

Victim entityWelltok

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