Oracle Health/Cerner hack affects about 263,000 linked to Union Health System
SpilloverSpillover from the Oracle incident · View original incident →The Oracle Health/Cerner hack affected about 263,000 people linked to Union Health System. The specific information affected and response measures have not been confirmed.
Key facts
- Affected organisation
- Union Health System
- Original incident
- Oracle Health hack leaks patient data of about 20 million people
- Incident type
- Hacking & intrusion
- Occurred / detected
- Not confirmed
- Scale of damage
- About 263,000 people
- Cause / method
- Oracle Health/Cerner hack
- Location
- United States
Timeline
- The number of people linked to Union Health System affected by the Oracle Health/Cerner hack was reported to be about 263,000.
Original incident
This is spillover from the Oracle incident.
Oracle Health hack leaks patient data of about 20 million people
20mImpact: Patient data of about 20 million people
Oracle Health was hacked in 2025, leaking patient data. The US Federal Bureau of Investigation investigated the attack, and leaks affecting healthcare providers were later disclosed. The scale confirmed in October 2026 is about 20 million people.
Related reports: 12 · last report →
1 related reports
The summary and key facts are written by AI from related reports and may contain errors. Check the original articles and the organisation’s official statements for accurate details.