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Regulator-posted notice

Breach notice filed by Siouxland Anesthesiology, Ltd. (July 2015)

Organization named: Siouxland Anesthesiology, Ltd. 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 Office for Civil Rights breach portal with a submission date of July 31, 2015.

Organization as reported
Siouxland Anesthesiology, Ltd., SD
Entity type as reported
Healthcare Provider
Category as reported
Hacking/IT Incident
Location of information as reported
Network Server
Submission date
July 31, 2015
Observed by BreachRecords
2026-10-18 16:15 UTC (revision 14741, row:5880)
Archived copy
Held in the private archive (provenance)

Siouxland Anesthesiology, the covered entity (CE), reported it was the subject of a criminal malware attack. The CE reported that hackers infiltrated one of its computer servers and installed malware that left patients’ electronic protected health information (ePHI) vulnerable to unauthorized access. The exposed ePHI included patients’ names, addresses, dates of birth, and, in some cases, Social Security numbers. The breach affected approximately 13,000 individuals. Following the breach report to the individuals, media and HHS, the CE investigated the incident and provided affected individuals with credit monitoring information and contact information should they have questions regarding the breach. In response to the breach and OCR’s review, the CE took a number of actions to address and mitigate the effects of the breach including: disabling the compromised server and replacing it with a new server; examining all work stations to ensure they were secure; and, establishing user controls and updating its password management procedures. In the course of its review, OCR provided the CE with technical assistance regarding necessary changes to its policies and procedures, and the requirements to conduct periodic thorough enterprise wide risk analyses and to review and update its risk management process.

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

Figures, per source

  • 13,000 individuals affected (total reported), according to the HHS Office for Civil Rights breach portal, source date July 31, 2015, 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 (HHS Office for Civil Rights breach portal)
  • Observed by BreachRecords (revision 14741)
  • Approved by a reviewer

Organizations linked by a reviewer

  • Siouxland Anesthesiology, Ltd. 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, retrieved from HHS Office for Civil Rights breach portal, 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.

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