HackingHealthcareProfessional ServicesHealthcareStolen CredentialsCustomer Data InvolvedData ExfiltratedPHIHealth (basic)Identity (basic)LowContained

Catalyst RCM

bd_5757e6104d4bc382 · schema v1 · pii pii-v1

Severity

Low

Discovered

Nov 13, 2025

Filed

Feb 6, 2026

To disclose

12 weeks

Affected

Not disclosed

Confidence

65%

Full breach record for Catalyst RCM →

Catalyst RCM notified individuals of a data privacy event where an authorized login was used to access a server and copy data without permission between November 8-9, 2025. The incident was discovered on November 13, 2025. Affected data included explanation of benefits letters containing names and other health-related information. Catalyst offered identity theft protection services.

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Incident timeline

undetected · 5 days

discovery → filing · 12 weeks / 85 days

Nov 8, 2025

Begins

Nov 13, 2025

Discovered

Feb 6, 2026

Filed

vs. sector median

on median

Tracked as a single-filing incident — the only disclosure on record for this event so far.ConfirmedView incident

Name: Catalyst RCM
norm: catalyst rcm

Name: Catalyst RCM
norm: catalyst rcm
Industry: HealthcarellmProfessional Servicesllm

Discovered: Nov 13, 2025
Breach occurred: Nov 8, 2025 – Nov 9, 2025
Undetected for: 5 daysoccurrence → discovery
Materiality determined: —
Notification sent: Feb 6, 2026
Affected individuals: Not disclosed
Data types: PHIHealth (basic)Identity (basic)
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid AccountsT1119 Automated Collection
Initial access: valid_credentials

During the incident: Promptly notified its business partners
Began a comprehensive investigation and review of the information that was potentially compromised
Offering identity theft protection services through IDX
Changes made: Reviewed and updated its protocols, policies, and procedures to reduce the likelihood of a similar event occurring in the future
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 12 weeks(85 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

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/sb24-618350
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Feb 6, 2026
Raw hash: 33d58a75d7f4ceed6c892f9658ab55cb494e0dfc2d32fc838da15e2addea3266

Reporting entityCatalyst RCM

Victim entityCatalyst RCM

Incidentdiscovered Nov 13, 2025

Stated responsePromptly notified its business partners

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenanceoag.ca.gov