DisclosureLens
GLOBALMalwareHealthcareHealthcareRansomwareInsomniaRansom DemandedActor NamedMedium

Southern Illinois Dermatology

bd_ea35c9cdac615294 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Filed

Nov 28, 2025

To disclose

Affected

Not disclosed

Linked

6 filings

Confidence

50%
Full breach record for Southern Illinois Dermatology

Threat-actor claim — not a regulatory filing

This row is a claim by the ransomware group Insomnia on its public extortion blog. It has not been validated by the victim or any regulator. Treat attribution and counts as the threat actor's assertion until a regulatory filing or victim disclosure corroborates them.

Group activity: HealthcareDiscovered: 2026-02-07

Source: Ransomware.live

Post text · scraped from the leak site

Southern Illinois Dermatology, founded in 1996 by Board-Certified Dr. Ted G. Van Acker, has grown from one office to 15 locations. We offer general, surgical, cosmetic dermatology and advanced laser treatments with attentive, professional care.

Incident timeline — mostly unverified

? — ?

Breach window unknown

Nov 28, 2025

Claim posted

Corroborated · see linked filings

Compliance clocks stay unassessable until a regulatory filing lands. Dashed segments fill in automatically when corroboration arrives.

Claim → filing

Compliance clock

Not assessable

This filing is one of 6 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (5) · sorted by filing gap

Show 1 more filingup to 125d gap

Filing propagation · 6 filings · 4 states

View merged incident ↗
Leak SiteNov 28 · first · this page
HHS OCR+125d

Pattern: first filing Nov 28, last Apr 2 (IL) — a 125-day rolling notification. Rolling spreads often mean counsel is filing as thresholds trip per state. Why this link?

Evidence ladder

Leak-site claimThis record

Attacker assertion only. Establishes: claim date, group, alleged victim.

Press / market report

Unlocks: incident narrative, operational impact. Still no compliance clock.

State AG / regulator filing

Unlocks: discovery date, data types, affected count, compliance clock.

SEC 8-K / victim statement

Unlocks: materiality, stated response, full audit trail. Ceiling removed.

Source ceiling

  • actor name
  • victim claim
  • ransom/leak status
  • discovery date
  • materiality
  • notification
  • affected count
  • confirmed data types
  • compliance clock

The ✕ fields stay blank until a regulatory filing or victim disclosure lands.

About this groupFirst seen 2025-02-14

insomnia

According to ransomware.live, Insomnia is a data-theft and extortion group that emerged in October 2025, targeting primarily US-based healthcare organizations — stealing patient files and threatening public exposure rather than encrypting files — and avoiding former Soviet states, consistent with Russian-speaking cybercrime norms.

52 victims claimed globally52 tracked hereFull profile →