Signature Performance
bd_8ffebe88e2a8bc50 · schema v1 · pii pii-v1
Full breach record for Signature Performance →Threat-actor claim — not a regulatory filing
This row is a claim by the ransomware group Medusa 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
Signature Performance (Signature) is a leading provider of healthcare administrative solutions and services. The company was created in 2004, at present the staff of the arts are more than 1250 people. Signature Performance corporate office is located in 10250 Regency Cir Ste 500, Omaha, Nebraska, 68114, United States
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Incident timeline — mostly unverified
? — ?
Breach window unknown
Jan 24, 2024
Claim posted
—
Corroborated · see linked filings
This record's own dates cannot anchor compliance clocks; see the linked filings.
Claim → filing
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Compliance clock
Not assessable
Linked disclosures
Why this link?Ransomware claims (1)
- Leak Sitedispossessorbd_d1478747c36b95f02024-02-26 · +33dVerified by operator
Regulatory filings (9) · sorted by filing gap
- Indiana State AGbd_84b9766c9b8ca4842024-02-09 · +16dVerified by operator
- Vermont State AGbd_a3ef04fc7d3269972024-02-09 · +16dVerified by operator
- Maine State AGbd_c486c4540e26b49d2024-02-09 · +16dVerified by operator
- Massachusetts State AGbd_4b58461a96387c192024-02-10 · +17dVerified by operator
Show 5 more filings ↓Show fewer ↑up to 140d gap
- New Hampshire State AGbd_0a96e2de88613a0e2024-02-12 · +19dVerified by operator
- Montana State AGbd_43ac19f0de3e7ddb2024-02-12 · +19dVerified by operator
- HHS OCRbd_1feed69b36367c1d2024-06-10 · +138dVerified by operator
- Vermont State AGbd_d1571ee5429da6cc2024-06-10 · +138dVerified by operator
- Massachusetts State AGbd_9846955b811b34542024-06-12 · +140dVerified by operator
Filing propagation · 9 filings · 7 states
View merged incident ↗Pattern: first filing Feb 9 (IN), last Jun 12 (MA) — a 124-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.
medusa
According to ransomware.live, Medusa is a ransomware-as-a-service operation active since June 2021 that has targeted over 300 victims across critical infrastructure sectors including healthcare, education, legal, and manufacturing using double-extortion, with attacks surging 42% between 2023 and 2024 and a formal CISA advisory issued in early 2025.