Sanderling Healthcare
bd_f5c6de4ef9ef563a · schema v1 · pii pii-v1
Full breach record for Sanderling Healthcare →Threat-actor claim — not a regulatory filing
This row is a claim by the ransomware group Sarcoma 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.
Source: Ransomware.live
Post text · scraped from the leak site
Sanderling Healthcare Sanderling Healthcare was founded in 2009 by Dr. Jerome S. Tannenbaum to further one of his personal missions for healthcare – to lower the cost, and speed the construction, of healthcare facilities. As a nephrologist and successful entrepreneur, Dr. Tannenbaum had spent years perfecting his dialysis clinic designs. Known for counting every step made by his nurses and patient care technicians, and having developed roughly 100 dialysis clinics across the country, Dr. Tannenbaum perfected the design of the modern day dialysis clinic. Among the many benefits of working with Sanderling, is the peace of mind to know exactly what a new or expanded hospital facility will cost, and when it will be ready for occupancy.Geo: USA - Leak size: 587 GB Archive - Contains: Files,Excahnge,Bases
J jump to incidentP pin to compareR raw source
Incident timeline — mostly unverified
? — ?
Breach window unknown
Jul 23, 2025
Claim posted
—
No filing yet · watching
Compliance clocks stay unassessable until a regulatory filing lands. Dashed segments fill in automatically when corroboration arrives.
Claim → filing
—
Compliance clock
Not assessable
Evidence ladder
Attacker assertion only. Establishes: claim date, group, alleged victim.
Unlocks: incident narrative, operational impact. Still no compliance clock.
Unlocks: discovery date, data types, affected count, compliance clock.
Unlocks: materiality, stated response, full audit trail. Ceiling removed.
No regulatory filing corroborates this yet — it is the attacker's own assertion. Watch this entity to be notified the moment a filing corroborates or contradicts it.
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.
sarcoma
According to ransomware.live, Sarcoma is a ransomware group that debuted in October 2024, immediately ranking among the top three most active groups globally and surpassing 116 documented victims by mid-2025, targeting mid-market companies across manufacturing, retail, healthcare, legal, and business services with roughly 50% of victims in the United States.