HHS OCR report ยท 2024
Thompson Coburn LLP data breach
OCR report facts
- Covered entity
- Thompson Coburn LLP
- Entity type
- Business Associate
- State
- Missouri
- Individuals affected
- 305,088
- Submission date
- Nov 4, 2024
- Type of breach
- Hacking/IT Incident
- Location of breached information
- Network Server
- Business associate present
- Yes
- Status
- Archive (closed)
OCR description
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.
Text as published on the HHS OCR breach portal.
Frequently asked questions
How many people were affected by the Thompson Coburn LLP data breach?
The report to HHS OCR lists 305,088 individuals affected.
When was it reported to HHS?
It was submitted to HHS OCR on Nov 4, 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: Network Server.
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 Thompson Coburn LLP 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 Thompson Coburn LLP.