Social EngineeringHealthcareTechnologyHealthcarePhishingStolen CredentialsCustomer Data InvolvedEmployee Data InvolvedTargetedIdentity (basic)Government IDFinancial accountHealth (basic)CredentialsMinorMediumContained

Datavant

bd_a00e2846daad891e · schema v1 · pii pii-v1

Severity

Medium

Discovered

May 9, 2024

Filed

Feb 11, 2025

To disclose

40 weeks

Affected

3state residents only

Linked

3 filings

Confidence

65%

Full breach record for Datavant →2 incidents on file

Datavant (Ciox Health LLC) notified Montana residents of a phishing attack on May 9, 2024. Unauthorized access occurred May 8-9, 2024, to a single user's mailbox. Impacted data included names, SSNs, financial accounts, driver's licenses, passports, and health information for patients, employees, and next of kin. Datavant engaged forensic experts, updated security safeguards, and provided 2 years of Kroll identity monitoring services.

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Incident timeline

undetected · 1 days

discovery → filing · 40 weeks / 278 days

May 8, 2024

Begins

May 9, 2024

Discovered

Feb 11, 2025

Filed

vs. sector median

+27 wks slower

This filing is one of 3 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (2) · sorted by filing gap

Vermont State AGbd_1e9720ec58563fc92024-12-06 · +67dVerified
Maine State AGbd_32af6555038d0f402024-12-06 · +67dCandidate

Name: Datavant
norm: datavant
Domain: idsb-portal.datavant.com

Name: Datavant
norm: datavant
Domain: idsb-portal.datavant.com
Industry: HealthcarellmTechnologyllm

Discovered: May 9, 2024
Breach occurred: May 8, 2024 – May 9, 2024
Undetected for: 1 dayoccurrence → discovery
Materiality determined: —
Notification sent: —
Affected individuals: 3state-resident count only
Data types: Identity (basic)Government IDFinancial accountHealth (basic)CredentialsMinor
Data elements: Social Security numberMedical information
Attack vector: Phishing
MITRE ATT&CK: T1566.002 Spearphishing LinkT1078 Valid AccountsT1114 Email Collection
Threat actor: ExternalFinancial
Initial access: phishing_link

During the incident: Worked with external cybersecurity experts to resolve the phishing attack
Implemented or updated a variety of technical security safeguards
Trains its employees on phishing awareness
Retained Kroll to provide Minor Identity Monitoring, Fraud Consultation, and Identity Theft Restoration at no cost
Changes made: Implemented or updated a variety of technical security safeguards
Trains its employees on phishing awareness
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 40 weeks(278 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 3 filings · 3 states

View merged incident ↗

Vermont State AGDec 6 · first

Maine State AGDec 6 · first

Montana State AG+67d · this page

Pattern: first filing Dec 6 (VT), last Feb 11 (MT) — a 67-day rolling notification. Rolling spreads often mean counsel is filing as thresholds trip per state. Why this link?

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://dojmt.gov/wp-content/uploads/2025/03/Consumer-notification-letter-193.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Feb 11, 2025
Raw hash: 5c8fe4b562b9e195aa0d7f98879bc67583e880a8c0f9794289aa226f872003fe

Linked disclosures

Regulatory filings (2) · sorted by filing gap

Reporting entityDatavant

Victim entityDatavant

Incidentdiscovered May 9, 2024

Stated responseWorked with external cybersecurity experts to resolve the phishing attack

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancedojmt.gov