Medical Oncology Hematology Consultants, P.A.
bd_46e41800cd5f36a8 · schema v1 · pii pii-v1
Full breach record for Medical Oncology Hematology Consultants, P.A. →3 incidents on fileThreat-actor claim — not a regulatory filing
This row is a claim by the ransomware group Rhysida 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
Hematology Oncology Consultants Michigan Hematology Oncology is a private practice dedicated to providing the highest level of quality care in a healing environment for the mind, body and spirit of patients dealing with cancer and blood disorders.
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Incident timeline — mostly unverified
? — ?
Breach window unknown
Sep 20, 2025
Claim posted
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Corroborated · see linked filings
Compliance clocks stay unassessable until a regulatory filing lands. Dashed segments fill in automatically when corroboration arrives.
Claim → filing
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Compliance clock
Not assessable
Linked disclosures
Why this link?Ransomware claims (1)
- Leak Siterhysidabd_48da52597f13bd152025-10-17 · +28dVerified by operator
Regulatory filings (3) · sorted by filing gap
- HHS OCRbd_2e0638d56653ed152026-04-24 · +216dVerified by operator
- New Hampshire State AGbd_996ebc1f9fbd4c3c2026-04-30 · +222dVerified
- Massachusetts State AGbd_d8e6325f69d84a822026-05-01 · +223dVerified by operator
Filing propagation · 4 filings · 3 states
View merged incident ↗Pattern: first filing Sep 20, last May 1 (MA) — a 223-day rolling notification. Rolling spreads often mean counsel is filing as thresholds trip per state. Why this link?
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.
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.
rhysida
According to ransomware.live, Rhysida is a ransomware-as-a-service (RAAS) group that emerged in May 2023. The group utilizes a namesake ransomware through phishing attacks and Cobalt Strike to breach the targets' networks and deploy their payloads. The group threatens to publicly distribute exfiltrated data if the ransom is not paid, and it's worth mentioning that Rhysida is still in the early stages of development. The ransomware leaves PDF notes in the affected folders, instructing victims to contact the group through its portal, and payment is made via Bitcoin. After encryption, the ransomware appends the extension '.ryshida' to encrypted files. Source: https://github.com/crocodyli/ThreatActors-TTPs