MalwareHealthcareHealthcareRansomwareData ExfiltratedData PublishedRansom DemandedIdentity (basic)Government IDPHIHealth (basic)MediumContained

Leon Medical Centers, LLC

bd_b5eb6f489ba168dc · schema v1 · pii pii-v1

Severity

Medium

Discovered

Nov 8, 2020

Filed

May 14, 2021

To disclose

27 weeks

Affected

1state residents only

Confidence

66%

Leon Medical Centers, LLC notified patients of a cybercriminal attack where malware infected its network. Attackers gained access on or before Oct 2, 2020, exfiltrated and published patient files containing PHI, SSNs, and PII. LMC engaged forensic specialists, took systems offline, and offered 24 months of credit monitoring.

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Incident timeline

undetected · 37 days

discovery → filing · 27 weeks / 187 days

Oct 2, 2020

Begins

Nov 8, 2020

Discovered

May 14, 2021

Filed

vs. sector median

+18 wks slower

Tracked as a single-filing incident — the only disclosure on record for this event so far.Confirmed1 affectedView incident

Name: Leon Medical Centers, LLC
norm: leon medical centers

Name: Leon Medical Centers, LLC
norm: leon medical centers
Industry: Healthcarellm

Discovered: Nov 8, 2020
Breach occurred: Oct 2, 2020
Undetected for: 37 daysoccurrence → discovery
Materiality determined: —
Notification sent: —
Affected individuals: 1state-resident count only
Data types: Identity (basic)Government IDPHIHealth (basic)
Data elements: Social Security numberDate of birthMedical information
Attack vector: Ransomware
MITRE ATT&CK: T1486 Data Encrypted for ImpactT1041 Exfiltration Over C2 ChannelT1078 Valid Accounts
Threat actor: ExternalFinancial
Regulator citations: Reported this incident to law enforcement
Initial access: valid_credentials

During the incident: Took systems offline
Launched an investigation into the nature and scope of the incident
Working with leading third-party computer forensic specialists
Reviewed and reinforced the security of our systems
Reporting this incident to law enforcement and cooperating with their investigation
Offering credit monitoring and identity theft protection services for twenty-four (24) months
Changes made: Reviewing existing security policies
Implemented additional cybersecurity measures to further protect against similar incidents moving forward
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 27 weeks(187 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://dojmt.gov/wp-content/uploads/various-notif.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: May 14, 2021
Raw hash: aa95b61cf2ba3085ded2b46262c4a480d8dc19992bc0c325e6004a39c67d22bb

Reporting entityLeon Medical Centers, LLC

Victim entityLeon Medical Centers, LLC

Incidentdiscovered Nov 8, 2020

Stated responseTook systems offline

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancedojmt.gov