HackingHealthcareTechnologyHealthcareVulnerability ExploitSupply Chain (3P Vendor)Data ExfiltratedCustomer Data InvolvedDelayed DiscoveryIdentity (basic)Health (basic)PHIHighContained

Cohere Health

bd_d2536a540e50248e · schema v1 · pii pii-v1

Severity

High

Discovered

Jul 26, 2023

Filed

Dec 14, 2023

To disclose

20 weeks

Affected

1,345state residents only

Linked

2 filings

Confidence

66%

Full breach record for Cohere Health →3 incidents on file

Welltok, Inc. notified Cohere Health customers of a data breach involving the MOVEit Transfer server. An unknown actor exploited a vulnerability in the software on May 30, 2023, accessing and exfiltrating data including names, DOB, SSNs, and PHI. Welltok discovered the compromise on July 26, 2023, after applying patches. Approximately 1,345 Rhode Island residents were identified as affected. Welltok engaged third-party cybersecurity specialists, reconstructed systems, and offered credit monitoring and identity restoration services.

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Incident timeline

undetected · 57 days

discovery → filing · 20 weeks / 141 days

May 30, 2023

Begins

Jul 26, 2023

Discovered

Dec 14, 2023

Filed

vs. sector median

+8 wks slower

This filing is one of 2 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (1) · sorted by filing gap

Washington State AGbd_9690dc598754ddee2023-12-15 · +1dVerified

Name: Welltok
norm: welltok
Domain: welltok.com

Name: Cohere Health
norm: cohere health
Industry: HealthcarellmTechnologyllm

Discovered: Jul 26, 2023
Breach occurred: May 30, 2023
Undetected for: 57 daysoccurrence → discovery
Materiality determined: —
Notification sent: Dec 12, 2023
Affected individuals: 1,345state-resident count only
Data types: Identity (basic)Government IDHealth (basic)PHI
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
Full reconstruction of our systems and historical data
Reviewing and enhancing our existing policies and procedures related to data privacy
Making available to you credit monitoring and identity restoration services
Changes made: Reviewing and enhancing our existing policies and procedures related to data privacy
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 20 weeks(141 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 2 filings · 2 states

View merged incident ↗

Delaware State AGDec 14 · first · this page

Washington State AG+1d

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://attorneygeneral.delaware.gov/wp-content/uploads/sites/50/2023/12/Welltok.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Dec 14, 2023
Raw hash: a723892233d678e6f521825586823c75b81ab13eab41276cfa8c405e23889729

Linked disclosures

Regulatory filings (1) · sorted by filing gap

Reporting entityWelltok

Victim entityCohere Health

Incidentdiscovered Jul 26, 2023

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

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenanceattorneygeneral.delaware.gov