Quest Diagnostics says unauthorized party may have seen Quanum records
Original title: Quest Diagnostics Confirms Cyberattack Exposing Patient Records in Quanum System
The October 21 Form 8-K does not say how many patients were affected or whether records were taken.
Quest Diagnostics said in an October 21, 2026 Form 8-K that an unidentified party may have accessed certain patient records in its Quanum LSM system, also called Quanum Lab Services Manager. The company paused access to that system, notified federal law enforcement, and hired outside experts. It says core lab ordering through other interfaces continues and operations are not materially disrupted. The filing does not say how many people were affected or whether records were taken.
Unconfirmed: Quest has not confirmed how access occurred, whether data was exfiltrated, how many people were affected, or that the intrusion is fully contained.
- Quest learned of the unauthorized activity on October 21, 2026.
- Quanum LSM lets healthcare clients order laboratory tests and retrieve results.
- The company reports no ransomware, extortion demand, or malware.
- Direct laboratory interfaces and electronic medical record ordering remain available.
- Patient notifications and a restoration timeline were not disclosed.
Impact: possible unauthorized access to certain patient records
| Product | Affected |
|---|---|
| Quest Diagnostics Quanum LSM | — |
- Vendors
- Quest Diagnostics
- Products
- Quanum LSM
- Victims
- Quest Diagnostics
From the original article
2 min read at gbhackers.com
Quest Diagnostics disclosed unauthorized access to its Quanum LSM system, confirming that an unidentified party may have accessed certain patient records. The company became aware of the incident on October 21, 2026, as stated in a Form 8-K disclosure. The Quanum LSM system enables specific healthcare clients to place laboratory test orders, receive results, and […]
By Divya · gbhackers.com
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