HHS OCR report ยท 2024
Memorial Sloan Kettering Cancer Center data breach
OCR report facts
- Covered entity
- Memorial Sloan Kettering Cancer Center
- Entity type
- Healthcare Provider
- State
- New York
- Individuals affected
- 12,274
- Submission date
- Jun 25, 2024
- Type of breach
- Hacking/IT Incident
- Location of breached information
- Business associate present
- No
- Status
- Archive (closed)
OCR description
The covered entity (CE), Memorial Sloan Kettering Cancer Center, reported that an employee was the subject of an email phishing scheme that affected the protected health information (PHI) of 12,274 individuals. The PHI involved names, addresses, dates of birth, diagnoses, lab results, medications, and other treatment information. The CE notified HHS, the affected individuals, the media, and provided substitute notice. In response to the breach, the CE implemented additional administrative, te...
Text as published on the HHS OCR breach portal.
Other reports by Memorial Sloan Kettering Cancer Center
| Covered entity | State | Entity type | Individuals | Submitted | Type of breach | Status |
|---|---|---|---|---|---|---|
| Memorial Sloan Kettering Cancer Center | NY | Healthcare Provider | 18,913 | Mar 31, 2021 | Unauthorized Access/Disclosure | Archive (closed) |
| Memorial Sloan Kettering Cancer Center | NY | Healthcare Provider | 73,536 | Sep 14, 2020 | Hacking/IT Incident | Archive (closed) |
Frequently asked questions
How many people were affected by the Memorial Sloan Kettering Cancer Center data breach?
The report to HHS OCR lists 12,274 individuals affected.
When was it reported to HHS?
It was submitted to HHS OCR on Jun 25, 2024.
What type of breach was it?
The OCR portal lists the type of breach as Hacking/IT Incident, with the breached information located in: Email.
Is the investigation still open?
No. The report is in the OCR portal archive, which holds reports where OCR has closed its review.
Is a breach notice letter from Memorial Sloan Kettering Cancer Center legitimate?
This site cannot verify letters. Check the sender against the organisation's official website and the HHS OCR breach portal, and avoid calling numbers or clicking links only listed in an unexpected message. See our guide on what to do after a data breach notice.
Source: HHS OCR Breach Portal, OCR export October 2026. Network USA is not affiliated with HHS or Memorial Sloan Kettering Cancer Center.