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Case File: Cardinal Services, Inc, Cardinal Employer Organization, and Preferred Employer Solutions, collectively (“Cardinal”) Data Breach

This file collects the dated facts on record for the Cardinal Services, Inc, Cardinal Employer Organization, and Preferred Employer Solutions, collectively (“Cardinal”) incident. The state report is dated May 20, 2026.

Timeline

  1. May 20, 2026Report filed in MaineDate the notice was lodged with the Maine Attorney General.

Case facts

Filing state
Maine
Date reported
May 20, 2026
Receiving office
Maine Attorney General

Case notes

Cardinal Services, Inc., Cardinal Employer Organization, and Preferred Employer Solutions, collectively known as 'Cardinal,' officially filed a data security incident report with the Maine Attorney General's office on May 20, 2026. As a Professional Employer Organization (PEO), Cardinal typically manages sensitive data for its clients, including employee records and benefits information.

The public filing indicates that unauthorized parties may have accessed their systems, potentially compromising personal information. While the specific categories of data involved are not detailed in the available public record, the report confirms a breach impacting their network.

If you received a direct notification letter from Cardinal, it signifies that your personal information was likely stored within their network at the time of this incident. The purpose of this notice is to inform you of the event and guide you on necessary protective measures.

Individuals who have received a notification are advised to remain vigilant. Regularly review all financial statements and credit reports for any suspicious or unauthorized activity. It is also recommended to consider placing a fraud alert or security freeze on your credit files to prevent potential misuse of your information.

Additionally, update passwords for online accounts, especially those that might share credentials or are associated with services managed by Cardinal. This proactive approach helps to mitigate risks associated with the reported data security incident.

Questions about this case file

Where does the Cardinal Services, Inc, Cardinal Employer Organization, and Preferred Employer Solutions, collectively (“Cardinal”) case file come from?
Every entry is taken from the breach report Cardinal Services, Inc, Cardinal Employer Organization, and Preferred Employer Solutions, collectively (“Cardinal”) lodged with the Maine 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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