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Regulator-posted notice

Breach notice filed by Thompson Coburn LLP (November 2024)

Organization named: Thompson Coburn LLP 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 Nov. 4, 2024.

Organization as reported
Thompson Coburn LLP, MO
Entity type as reported
Business Associate
Category as reported
Hacking/IT Incident
Location of information as reported
Network Server
Submission date
Nov. 4, 2024
Observed by BreachRecords
2026-10-18 16:15 UTC (revision 9621, row:760)
Archived copy
Held in the private archive (provenance)

Thompson Coburn LLP, the business associate (BA), reported that it experienced a ransomware attack affecting the electronic protected health information (ePHI) of 305,088 individuals. The ePHI involved included demographic, clinical, and financial information. The BA notified HHS, affected individuals, and the media. The BA took several corrective actions in response to the breach including improving its cybersecurity and providing additional HIPAA training to its workforce members.

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

Figures, per source

  • 305,088 individuals affected (total reported), according to the HHS Office for Civil Rights breach portal, source date Nov. 4, 2024, 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 9621)
  • Approved by a reviewer

Organizations linked by a reviewer

  • Thompson Coburn LLP Named as a service provider 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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