HackingHealthcareHealthcareData ExfiltratedCustomer Data InvolvedIdentity (basic)Government IDMediumContained

MedImpact Healthcare

bd_935b807df52a877a · schema v1 · pii pii-v2

Severity

Medium

Discovered

Oct 18, 2025

Filed

Sep 15, 2026

To disclose

47 weeks

Affected

Not disclosed

Linked

3 filings

Confidence

68%

Full breach record for MedImpact Healthcare →

California AG SB24-629789: MedImpact Healthcare Systems, Inc. reported unauthorized activity on its systems on October 18, 2025. The incident involved a pharmacy benefits manager serving the Leggett & Platt Employee Benefits Plan. Personal information, including names and government identifiers, was potentially impacted. No credit monitoring was offered. MedImpact engaged cybersecurity experts and enhanced security safeguards.

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Leak gap clock✗ Leak >180d47 weeks discovery → filing

⚠ occurrence dateThe stored discovery date equals the breach OCCURRENCE date. Detection is normally later, so this OVERSTATES the delay — a 'late' verdict here may not be real.

Incident timeline

discovery → filing · 47 weeks / 332 days

Oct 18, 2025

Begins

Oct 18, 2025

Discovered

Sep 15, 2026

Filed

vs. sector median

+35 wks slower

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

A leak claim by qilin about this victim predates this filing by 338 days.View originating leak claim

Linked disclosures

Why this link?

Ransomware claims (2)

Leak Siteqilinbd_c93a1497d2d039e92025-10-27 · +322dCandidate
Leak Siteqilinbd_b1db918e771e4fe92025-10-12 · +338dVerified

Name: Leggett & Platt®
norm: leggett platt
Domain: leggett.com

Name: MedImpact Healthcare
norm: medimpact healthcare
Domain: medimpact.com
Industry: Healthcarellm

Discovered: Oct 18, 2025
Breach occurred: Oct 18, 2025
Undetected for: 0 daysoccurrence → discovery
Materiality determined: —
Notification sent: —
Affected individuals: Not disclosed
Data types: Identity (basic)Government ID
Attack vector: Unauthorized Access
MITRE ATT&CK: T1190 Exploit Public-Facing Application
Threat actor: External
Initial access: exploit_public_facing

During the incident: Cybersecurity experts were engaged to assist in the investigation and response to the incident
MedImpact conducted a detailed review of data potentially impacted by the incident
MedImpact has taken steps to further enhance its security safeguards and monitoring
Changes made: Enhance its security safeguards and monitoring
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 47 weeks(332 days from discovery to filing)
Compliance flags: Leak >180d
Discovery-date grounding: occurrence dateThe stored discovery date equals the breach OCCURRENCE date. Detection is normally later, so this OVERSTATES the delay — a 'late' verdict here may not be real.

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/sb24-629789
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Sep 15, 2026
Raw hash: bcbaec2b64cb230b491567fc404e298aa0e5ba67857452e5d7a30a3f4cfcf820

Linked disclosures

Ransomware claims (2)

Reporting entityLeggett & Platt®

Victim entityMedImpact Healthcare

Incidentdiscovered Oct 18, 2025

Stated responseCybersecurity experts were engaged to assist in the investigation and response to the incident

ComplianceLeak >180d

Extraction provenanceno artifact recorded

Source provenanceoag.ca.gov