The Mount Kisco Surgery Center LLC
bd_9a8fe933940dea3e · schema v1 · pii pii-v1
Full breach record for The Mount Kisco Surgery Center LLC →The Mount Kisco Surgery Center LLC (dba ASCW) notified the NH AG of a data security incident. On Nov 3, 2023, unusual activity was discovered in an employee's email account. Unauthorized access occurred between Oct 23 and Nov 3, 2023. The incident involved phishing leading to credential compromise and email collection. Personal and PHI of 21,073 individuals were potentially affected, including 19 NH residents. ASCW engaged forensic investigators, secured the account, and offered identity protection services.
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Incident timeline
Oct 23, 2023
Begins
Nov 3, 2023
Discovered
May 30, 2024
Scope determined
Jun 26, 2024
Filed
vs. sector median
+25 wks slower
Linked disclosures
Why this link?Regulatory filings (4) · sorted by filing gap
- Maine State AGbd_20749848567ed2802024-06-26Verified
- Vermont State AGbd_8af3e03d49b068302024-06-26Candidate
- Indiana State AGbd_98faef4f7fe7242f2024-06-26Verified
- HHS OCRbd_d25e9f87302944172024-06-25 · +1dVerified
Filing propagation · 5 filings · 5 states
View merged incident ↗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.