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Case File: ExamOne (a Quest Diagnostics Company) Data Breach

This file collects the dated facts on record for the ExamOne (a Quest Diagnostics Company) incident. The state report is dated May 13, 2026.

Timeline

  1. May 13, 2026Report filed in MassachusettsDate the notice was lodged with the Massachusetts Attorney General.

Case facts

Filing state
Massachusetts
Date reported
May 13, 2026
Receiving office
Massachusetts Attorney General

Case notes

ExamOne, operating as a specialized subsidiary of Quest Diagnostics, has reported a data breach to regulatory authorities in Massachusetts. The filing, made on May 13, 2026, indicates that an incident occurred that may have compromised personal information. Details regarding the breach type and the specific data involved remain under investigation.

ExamOne serves as a crucial link between insurance providers, employers, and individuals, coordinating comprehensive health evaluations and laboratory testing. Its core function involves gathering detailed physiological profiles for life and disability insurance underwriting, necessitating the handling of highly sensitive personal information.

While the exact nature of the compromised data has not been specified, the exposure of any personal information through such an incident can pose significant concerns. The company's operations involve extensive clinical histories, lab results, and demographic details used to assess an individual's health status and insurability.

Individuals whose personal information was involved in this breach may face heightened risks, including various forms of fraud or identity theft. Malicious actors often target such repositories to exploit high-value records, potentially leading to targeted scams or unauthorized access to personal accounts.

It is advisable for affected individuals to remain vigilant for any unusual activity related to their accounts or personal records. Regularly reviewing financial statements and credit reports can help detect fraudulent activity early. Additionally, consider placing a fraud alert or credit freeze with major credit bureaus as a proactive security measure.

This incident underscores the importance of robust data security practices, particularly for entities handling sensitive personal information. The full scope of the breach and its implications are expected to become clearer as the investigation progresses.

Questions about this case file

Where does the ExamOne (a Quest Diagnostics Company) case file come from?
Every entry is taken from the breach report ExamOne (a Quest Diagnostics Company) lodged with the Massachusetts Attorney General. Nothing here is estimated.
Why do the incident date and the report date differ?
Companies usually investigate before they report. The gap between the two dates shows how long that took.
What does the records-affected figure count?
It is the number the company gave the state. It can cover residents of that state only, so the national total may be higher.
Does this case file change over time?
Yes. When a company files an update or a new state publishes its copy of the report, the dates and counts here are refreshed.

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