Regulator-posted notice

Breach notice filed by Missouri Department of Social Services (August 2023)

Organization named: Missouri Department of Social Services 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 Aug. 7, 2023.

Organization as reported: Missouri Department of Social Services, MO
Entity type as reported: Health Plan
Category as reported: Hacking/IT Incident
Location of information as reported: Network Server
Submission date: Aug. 7, 2023
Observed by BreachRecords: 2026-10-18 16:15 UTC (revision 10541, row:1680)
Archived copy: Held in the private archive (provenance)

The covered entity (CE), Missouri Department of Social Services, reported that a software application used by its business associate (BA) exposed the protected health information (PHI) of 739,884 individuals. The PHI involved included names, dates of birth, claims information, and health insurance information. The CE notified HHS, the affected individuals, the media, and provided substitute notice. In response to the breach, the CE and BA implemented additional administrative, technical, and security safeguards to better protect its PHI.
The source's own words, from the revision above.

Figures, per source

739,884 individuals affected (total reported), according to the HHS Office for Civil Rights breach portal, source date Aug. 7, 2023, 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.

2023-08-07Submission date (HHS Office for Civil Rights breach portal)
2026-10-18Observed by BreachRecords (revision 10541)
2026-10-19Approved by a reviewer

Organizations linked by a reviewer

Missouri Department of Social Services 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.

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 Missouri Department of Social Services (August 2023). We acknowledge every request within two business days. We reply by email.

The form is being set up. Check back soon.