HackingHealthcareTechnologyHealthcareVulnerability ExploitData ExfiltratedSupply Chain (3P Vendor)Customer Data InvolvedIdentity (basic)Health (basic)LowContained

Welltok

bd_cf54a7692c42c7aa · schema v1 · pii pii-v1

Severity

Low

Discovered

Jul 26, 2023

Filed

Jan 8, 2024

To disclose

24 weeks

Affected

Not disclosed

Linked

22 filings

Confidence

65%

Full breach record for Welltok →3 incidents on file

Welltok, Inc., a healthcare technology vendor, disclosed that an unknown actor exploited software vulnerabilities in its MOVEit Transfer server on May 30, 2023, exfiltrating data including names, dates of birth, and health insurance information. The incident was discovered on July 26, 2023. Welltok is offering credit monitoring to affected individuals.

J jump to incidentP pin to compareR raw source

California clockDiscovered Jul 26, 2023 → Notified Dec 14, 2023141d ✗ CA 60-day late24 weeks discovery → filing

Incident timeline

undetected · 57 days

discovery → filing · 24 weeks / 166 days

May 30, 2023

Begins

Jul 26, 2023

Discovered

Jan 8, 2024

Filed

vs. sector median

+14 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_0328ea1fdab9c4592023-12-22 · +17dVerified by operator
California State AGbd_5e4b7107bd1176de2023-12-22 · +17dVerified
Vermont State AGbd_8ca9e17ac4dfbe9b2023-12-22 · +17dVerified
New Hampshire State AGbd_db6e6d3e58b51e902023-12-22 · +17dVerified

Show 6 more filings ↓up to 137d gap

Maine State AGbd_063b1deb8c7a2bff2023-12-15 · +24dVerified by operator
Vermont State AGbd_69d99adc86ef4dcf2023-12-15 · +24dVerified
California State AGbd_b765e398c9850ca12023-12-15 · +24dVerified
New Hampshire State AGbd_e5a605be617ae3962023-12-15 · +24dVerified
California State AGbd_d2c5cdddd25b96d92024-02-28 · +51dVerified by operator
South Carolina State AGbd_57aa66e4578bd8912024-05-24 · +137dVerified by operator

Showing first 10 of 21 linked disclosures.

Name: Welltok
norm: welltok
Domain: welltok.com

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

Discovered: Jul 26, 2023
Breach occurred: May 30, 2023
Undetected for: 57 daysoccurrence → discovery
Materiality determined: —
Notification sent: Dec 14, 2023
Affected individuals: Not disclosed
Data types: Identity (basic)Health (basic)
Attack vector: Unauthorized Access
MITRE ATT&CK: T1190 Exploit Public-Facing ApplicationT1041 Exfiltration Over C2 Channel
Threat actor: External
Initial access: exploit_public_facing

During the incident: Engaged third-party cybersecurity specialists
Conducted examination of systems and networks
Installed all published patches and security upgrades
Moved quickly to investigate and respond to the event
Notified potentially affected individuals
Offering complimentary access to Experian IdentityWorks
Changes made: Reviewing and enhancing existing policies and procedures related to data privacy
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 24 weeks(166 days from discovery to filing)
Compliance flags: CA 60-day late · 141d
Discovery-date grounding: letter-groundedThe discovery date is the detection date narrated in the notification letter — the defensible tier.
Clock breakdown: Statute Window Elapsed Threshold Status
California
Discovered: Jul 26, 2023
→ Notified: Dec 14, 2023
141d 60 days (analyst band, pre-2026 discoveries) CA 60-day late

Statute	Window	Elapsed	Threshold	Status
California	Discovered: Jul 26, 2023 → Notified: Dec 14, 2023	141d	60 days (analyst band, pre-2026 discoveries)	CA 60-day late

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 11 filings · 5 states

View merged incident ↗

Maine State AGDec 15 · first

Vermont State AGDec 15 · first

California State AGDec 15 · first

New Hampshire State AGDec 15 · first

Maine State AG+7d

California State AG+7d

Vermont State AG+7d

New Hampshire State AG+7d

California State AG+24d · this page

California State AG+75d

South Carolina State AG+161d

Pattern: first filing Dec 15 (ME), last May 24 (SC) — a 161-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://oag.ca.gov/ecrime/databreach/reports/sb24-579073
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Jan 8, 2024
Raw hash: 88cc0f96c4b5982f5917c3bd730b110ad8c98f791b38b602a65fb92ce07cc7a1

Linked disclosures

Regulatory filings (10) · sorted by filing gap

Reporting entityWelltok

Victim entityWelltok

Incidentdiscovered Jul 26, 2023

Stated responseEngaged third-party cybersecurity specialists

ComplianceCA 60-day late

Extraction provenanceno artifact recorded

Source provenanceoag.ca.gov