Science & Tech · Cybersecurity · 4 hrs ago
Quest Diagnostics says patient information was accessed in cyberattack
Quest Diagnostics confirmed that patient information was involved in a cyberattack at the US medical testing company.
The New Jersey-based company said it found unauthorized access on Wednesday and disabled its Quanum Lab Services Manager system.
Healthcare providers use that system to order laboratory tests and view results.
Quest said some patient data may have been accessed, but it is still investigating what information was involved and how many people may be affected.
It also paused access to two other systems as a precaution, saying no data was accessed on them; core operations remain unaffected.
Providers can use paper forms or another Quest platform to place orders, and the company expects to restore full access as soon as Friday.
Quest has notified law enforcement and is working to identify affected people before sending any required notices.
Quest Diagnostics said patient health information or personally identifiable information was accessed in a cyberattack.
The company disabled access to its Quanum Lab Services Manager platform after discovering unauthorized access on Wednesday.
Quest said it is still investigating what information was involved and how many people may have been affected.
It temporarily paused access to two other systems as a precaution, but said no data was accessed on them.
Quest said its core operations remain unaffected and it expects to restore full functionality as soon as Friday.
- Who
- Quest Diagnostics said patient information was accessed.
- What
- Unauthorized access to its Quanum Lab Services Manager platform led the company to disable access. Quest said some patient data may have been accessed.
- When
- Quest discovered the unauthorized access on Wednesday, October 21, 2026, and announced it on Thursday, October 22.
- Where
- Not stated
- Why
- The company said it disabled access after discovering unauthorized access. The reason for the cyberattack is not stated.
This story does not have two clearly opposing sides.
Quest discovered unauthorized access to the Quanum Lab Services Manager platform.
Quest confirmed the incident and said it had disabled access to the affected platform.
Quest said it expected to restore full functionality.
- Affected platform
- Quanum Lab Services Manager
- Other systems paused
- Essential Insights and LabHQ
- Data on other systems
- Quest said no data was accessed
- Expected restoration
- As soon as Friday
- Incident discovered
- Wednesday, October 21, 2026