HackingHealthcareHealthcareVulnerability ExploitSupply Chain (Dependency)Data ExfiltratedDelayed DiscoveryCustomer Data InvolvedIdentity (basic)Government IDCritical

Welltok

bd_f45541c4fa22d1eb · schema v1 · pii pii-v1

Severity

Critical

Discovered

Oct 23, 2023

Filed

Nov 23, 2023

To disclose

4 weeks

Affected · nationwide

426,81220 in this filing

Linked

22 filings

Confidence

65%

Full breach record for Welltok →3 incidents on file

Healthcare business associate Welltok, Inc. reported a data breach affecting 426,812 individuals, stemming from the MOVEit vulnerability. The incident occurred on May 30, 2023, and was discovered on October 23, 2023. Compromised data includes names and Social Security Numbers. Welltok notified affected individuals on November 22, 2023, and is offering 12 to 24 months of credit monitoring and identity restoration services through Experian.

J jump to incidentP pin to compareR raw source

Maine clockDiscovered Oct 23, 2023 → Filed with AG Nov 23, 202331d ⏱ ME AG >30d4 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 · 146 days

discovery → filing · 4 weeks / 31 days

May 30, 2023

Begins

Oct 23, 2023

Discovered

Nov 23, 2023

Filed

vs. sector median

5 wks faster

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 · +22dVerified by operator
Vermont State AGbd_69d99adc86ef4dcf2023-12-15 · +22dVerified
California State AGbd_b765e398c9850ca12023-12-15 · +22dVerified
Maine State AGbd_0328ea1fdab9c4592023-12-22 · +29dVerified by operator

Show 6 more filings ↓up to 183d gap

California State AGbd_5e4b7107bd1176de2023-12-22 · +29dVerified
Vermont State AGbd_8ca9e17ac4dfbe9b2023-12-22 · +29dVerified
New Hampshire State AGbd_db6e6d3e58b51e902023-12-22 · +29dVerified
California State AGbd_cf54a7692c42c7aa2024-01-08 · +46dVerified by operator
California State AGbd_d2c5cdddd25b96d92024-02-28 · +97dVerified by operator
South Carolina State AGbd_57aa66e4578bd8912024-05-24 · +183dVerified by operator

Showing first 10 of 21 linked disclosures.

Name: Welltok
norm: welltok
Domain: welltok.com

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

Discovered: Oct 23, 2023
Breach occurred: May 30, 2023
Undetected for: 146 daysoccurrence → discovery
Materiality determined: —
Notification sent: Nov 22, 2023
Affected individuals: 426,812state + nationwide
Data types: Identity (basic)Government ID
Data elements: Social Security number
Attack vector: Unauthorized Access
MITRE ATT&CK: T1190 Exploit Public-Facing Application
Threat actor: ExternalFinancial
Initial access: exploit_public_facing

During the incident: Provided written notification to affected consumers.
Offered identity theft protection services.
Changes made: Offered 12-24 months of credit monitoring and identity restoration services through Experian.
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 4 weeks(31 days from discovery to filing)
Compliance flags: ME AG >30d · 31d
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.
Clock breakdown: Statute Window Elapsed Threshold Status
Maine
Discovered: Oct 23, 2023
→ Filed with AG: Nov 23, 2023
31d 30 days (soft) ME AG >30d

Statute	Window	Elapsed	Threshold	Status
Maine	Discovered: Oct 23, 2023 → Filed with AG: Nov 23, 2023	31d	30 days (soft)	ME AG >30d

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 11 filings · 5 states

View merged incident ↗

Maine State AGNov 23 · first · this page

Maine State AG+22d

Vermont State AG+22d

California State AG+22d

Maine State AG+29d

California State AG+29d

Vermont State AG+29d

New Hampshire State AG+29d

California State AG+46d

California State AG+97d

South Carolina State AG+183d

Pattern: first filing Nov 23 (ME), last May 24 (SC) — a 183-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://www.maine.gov/agviewer/content/ag/985235c7-cb95-4be2-8792-a1252b4f8318/df6b65ea-c8fb-4a62-a5e8-53fec501fabb.shtml
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Nov 23, 2023
Raw hash: 0ace037cef30ce970eb729d8ac65b6d7f7a7bbc1f15e647201ef5ccab6c5d0e3

Linked disclosures

Regulatory filings (10) · sorted by filing gap

Reporting entityWelltok

Victim entityWelltok

Incidentdiscovered Oct 23, 2023

Stated responseProvided written notification to affected consumers.

ComplianceME AG >30d

Extraction provenanceno artifact recorded

Source provenancewww.maine.gov