Centers Laboratory Breach Affects 542,377 People
Summary
Centers Laboratory reported that attackers accessed its systems in August 2025 and exfiltrated personal and health information. HHS records show 542,377 people were affected; WorldLeaks later listed the company and claimed a 720 GB data leak.
Key points
- Centers Laboratory discovered an intrusion in its IT environment in August 2025; its investigation found limited access between August 9 and 14.
- The investigation found that attackers exfiltrated personal and protected health information, including Social Security numbers, identification documents, insurance details, and medical information.
- The Department of Health and Human Services breach tracker lists 542,377 affected individuals.
- WorldLeaks listed Centers Laboratory in October 2025 and reportedly leaked more than 1.6 million files totaling 720 GB, allegedly stolen from the company.
- The article says WorldLeaks shifted from file-encrypting malware to data theft and extortion after emerging in 2025 following the shutdown of Hunters International.
Article Details
- Victim Organization
- Centers Laboratory (Centers Lab NJ LLC)
- Incident Type
- Intrusion and data exfiltration; access to systems occurred between August 9 and August 14, 2025.
- Data Types Exposed
- Names
- Dates of birth
- Social Security numbers
- Driver’s license or state identification numbers
- Passport numbers
- Health insurance information
- Medical information
- Affected Records
- 542,377 individuals, according to the HHS healthcare data breach tracker.
- Affected Data Size
- More than 1.6 million files totaling 720 GB were reportedly leaked; the files were allegedly stolen from Centers Lab systems.
- Operational Impact
- The article reports limited access to Centers Laboratory systems and exfiltration of personal and protected health information. No operational disruption is reported.
- Ransom Or Extortion
- WorldLeaks listed Centers Laboratory on its website in October 2025. The group is described as focusing on data theft and extortion; the article says the leaked files were allegedly stolen from Centers Lab, but reports no specific ransom demand.
- Claim Status
- confirmed