HackingHealthcareTechnologyHealthcareVulnerability ExploitData ExfiltratedTargetedPIIIdentity (basic)Health (basic)MinorHighContained

Arietis Health

bd_5e5d7e145a530d05 · schema v1 · pii pii-v1

Severity

High

Discovered

May 31, 2023

Filed

Sep 29, 2023

To disclose

17 weeks

Affected

7,265state residents only

Linked

3 filings

Confidence

66%

Full breach record for Arietis Health →2 incidents on file

Arietis Health, LLC notified Montana residents of a data breach involving the MOVEit software vulnerability. Unauthorized access occurred on May 31, 2023, potentially exposing names and healthcare/billing data. Arietis Health engaged forensic investigators, patched the server, and offered identity monitoring services.

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Incident timeline

discovery → filing · 17 weeks / 121 days

May 31, 2023

Begins

May 31, 2023

Discovered

Sep 29, 2023

Filed

vs. sector median

+5 wks slower

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

Linked disclosures

Why this link?

Ransomware claims (1)

Leak Sitecl0pbd_deb946a6d1fba28e2023-07-14 · +77dCandidate

Regulatory filings (1) · sorted by filing gap

HHS OCRbd_b07584268c8b8e842023-09-29Verified

Name: Arietis Health
norm: arietis health
Domain: arietishealth.com

Name: Arietis Health
norm: arietis health
Domain: arietishealth.com
Industry: HealthcarellmTechnologyllm

Discovered: May 31, 2023
Breach occurred: May 31, 2023
Undetected for: 0 daysoccurrence → discovery
Materiality determined: —
Notification sent: —
Affected individuals: 7,265state-resident count only
Data types: PIIIdentity (basic)Health (basic)Minor
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: Engaged leading, independent cybersecurity experts to conduct a comprehensive investigation
Secured and patched its MOVEit server
Engaged CyEx to provide complimentary Identity Monitoring services
Changes made: Secured and patched its MOVEit server in accordance with Progress Software’s instructions
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 17 weeks(121 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 ↗

HHS OCRSep 29 · first

Montana State AGSep 29 · first · this page

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/OCP/Consumer-notification-letter-735.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Sep 29, 2023
Raw hash: 02ce3791081c0841ee97f32b284ef4f54b26768f3396de60006e91a8c49db824

Linked disclosures

Ransomware claims (1)

Regulatory filings (1) · sorted by filing gap

Reporting entityArietis Health

Victim entityArietis Health

Incidentdiscovered May 31, 2023

Stated responseEngaged leading, independent cybersecurity experts to conduct a comprehensive investigation

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancedojmt.gov