ExamOne (Quest Diagnostics) Reports Data Breach to Massachusetts AG

ExamOne, a Quest Diagnostics company, reported a data security incident to the Massachusetts Attorney General on May 13, 2026. The company is currently investigating this breach, which involves personal information handled by their services. Individuals potentially affected should stay alert for unusual activity.

State: Massachusetts
Reported: May 13, 2026

ExamOne, a company operating as a subsidiary of Quest Diagnostics, filed a report with the Massachusetts Attorney General on May 13, 2026, confirming a data security incident. The company stated that the breach is currently under investigation, meaning full details about its nature and scope are still being determined.

ExamOne specializes in coordinating health evaluations and laboratory testing for insurance providers, employers, and individuals. Its core function involves gathering sensitive personal information to assist with health assessments and insurance underwriting processes.

While the filing did not specify the exact categories of personal information involved in this incident, the exposure of any such data can lead to risks. Individuals should be aware that their personal information may have been compromised through this security event.

It is advisable for anyone potentially affected to remain vigilant. Regularly review financial statements and credit reports for any unauthorized transactions or suspicious account activity. Consider implementing a credit freeze or fraud alert with major credit bureaus if you are concerned about potential identity-related misuse.

Maintaining strong, unique passwords for all online accounts and being cautious of unsolicited communications, such as emails or calls requesting personal information, are also important protective measures. Stay informed about any further official updates or notifications provided by ExamOne regarding this incident.

What to do if you were affected

These general steps can help limit the risk of identity theft and fraud after any data breach.

Stay alert to targeted scams
Be cautious of calls, texts, or emails that reference this breach. Legitimate organizations won't ask you to confirm sensitive details through an unsolicited message.
Keep your notification letter
Save the notice you received. It documents that your information was involved and is often needed to enroll in any credit monitoring offered or to join a related legal claim.

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