BreachScout BreachScout Breach Records

Regulator-posted notice

Breach notice filed by 21st Century Oncology (March 2016)

Organization named: 21st Century Oncology Provisional: identity as filed, not yet matched to the directory
Type as the source lists it: Hacking/IT Incident

What the sources say

HHS OCR breach portal (HIPAA breaches affecting 500 or more individuals) Primary notice

Posted on the HHS OCR breach portal (HIPAA breaches affecting 500 or more individuals) with a submission date of March 4, 2016.

Organization as reported
21st Century Oncology, FL
Entity type as reported
Healthcare Provider
Category as reported
Hacking/IT Incident
Location of information as reported
Network Server
Submission date
March 4, 2016
Observed by BreachRecords
2026-10-18 16:15 UTC (revision 14598, row:5737)
Archived copy
Held in the private archive (provenance)

Failure to protect the health records of millions of persons costs entity millions of dollars 21st Century Oncology, Inc. (21CO) has agreed to pay $2.3 million in lieu of potential civil money penalties to the U.S. Department of Health and Human Services (HHS) Office for Civil Rights (OCR) and adopt a comprehensive corrective action plan to settle potential violations of the Health Insurance Portability and Accountability Act (HIPAA) Privacy and Security Rules. 21CO is a provider of cancer care services and radiation oncology. With their headquarters located in Fort Myers, Florida, 21CO operates and manages 179 treatment centers, including 143 centers located in 17 states and 36 centers located in seven countries in Latin America. On two separate occasions in 2015, the Federal Bureau of Investigation (FBI) notified 21CO that patient information was illegally obtained by an unauthorized third party and produced 21CO patient files purchased by an FBI informant. As part of its internal investigation, 21CO determined that the attacker may have accessed 21CO’s network SQL database as early as October 3, 2015, through the remote desktop protocol from an exchange server within 21CO’s network. 21CO determined that 2,213,597 individuals were affected by the impermissible access to their names, social security numbers, physicians’ names, diagnoses, treatment, and insurance information. OCR’s subsequent investigation revealed that 21CO failed to conduct an accurate and thorough assessment of the potential risks and vulnerabilities to the confidentiality, integrity, and availability of the electronic protected health information (ePHI); failed to implement security measures sufficient to reduce risks and vulnerabilities to a reasonable and appropriate level; failed to implement procedures to regularly review records of information system activity, such as audit logs, access reports, and security incident tracking reports; and disclosed protected health information (PHI) to…

The source's own words, from the revision above.

Figures, per source

  • 2,213,597 individuals affected (total reported), as reported by the HHS OCR breach portal (HIPAA breaches affecting 500 or more individuals), source date March 4, 2016, revision observed 2026-10-18.

Each figure is one source's figure with the basis that source gave. Figures from different sources are shown side by side and are not added, averaged or chosen between.

Timeline

Source dates are the dates the sources give. Observation dates are when BreachRecords recorded each revision.

  • Submission date at the HHS OCR breach portal (HIPAA breaches affecting 500 or more individuals)
  • Observed by BreachRecords (revision 14598)
  • Approved by a reviewer

Organizations linked by a reviewer

  • 21st Century Oncology Named as the covered entity Provisional: identity as filed, not yet matched to the directory Linked 2026-10-19, method provisional.

Archived evidence

  • 3dbc27dd5742e041cc1e7fe18cc669e2901fbd3b86b7007ed27948ff4d406e1f
    text/csv, 5,530,996 bytes, from the HHS OCR breach portal (HIPAA breaches affecting 500 or more individuals), retrieved 2026-10-18 16:15 UTC. Archived privately · Provenance · Source page

Records reflect source filings as of the dates shown. BreachRecords is not a regulator.

Request a correction

A record that disagrees with its source, names the wrong organization or duplicates another is corrected after review. This form is about Breach notice filed by 21st Century Oncology (March 2016). We acknowledge every request within two business days. We reply by email.

The form is being set up. Check back soon.