Understanding your Cardinal Services, Inc, Cardinal Employer Organization, and Preferred Employer Solutions, collectively (“Cardinal”) data breach notification letter
If a Cardinal Services, Inc, Cardinal Employer Organization, and Preferred Employer Solutions, collectively (“Cardinal”) letter arrived in your mailbox, here is what it means, why you received it, and the free steps you can take right now.
Why you received this letter
Cardinal Services, Inc., Cardinal Employer Organization, and Preferred Employer Solutions, collectively referred to as 'Cardinal,' appear to operate as a Professional Employer Organization (PEO) or human resources outsourcing firm. In this capacity, Cardinal typically collects and maintains sensitive employee data, including payroll records, tax documentation, and benefits administration information for the clients they serve. In 2026, the company officially reported a data security incident to the Maine Attorney General, confirming that unauthorized parties may have accessed their systems. If you received a data breach notification letter from Cardinal, it indicates that your personal information was likely stored within their network at the time of the incident. This notice is intended to inform you of the event and provide guidance on the steps you should take to protect your identity.
What to do after the letter
Confirm the notice is genuine
A legitimate Cardinal Services, Inc, Cardinal Employer Organization, and Preferred Employer Solutions, collectively (“Cardinal”) notice references the specific incident reported to the Maine Attorney General and describes which categories of your information were involved. Compare the letter against the public filing before acting on any links or phone numbers it contains.
Keep the letter — it is your proof of connection
The notification letter is the document that ties your personal information to this incident. Keep the original and photograph it. If you later request a case review, this letter is the strongest evidence that you were among the affected individuals.
Protect your accounts and credit
Depending on what was exposed, consider a free credit freeze with all three bureaus, new passwords for reused credentials, and monitoring of financial statements. These steps are free and do not require you to wait for anyone's permission.
Find out whether you have a claim
Whether the Cardinal Services, Inc, Cardinal Employer Organization, and Preferred Employer Solutions, collectively (“Cardinal”) breach gives you a legal claim depends on the facts. A free, no-obligation case review will tell you where you stand — there is no cost and no commitment to find out.
This page summarizes a data breach reported to the Maine Attorney General for informational purposes and is attorney advertising. It does not create an attorney-client relationship. DataBreachLegalCenter.com does not provide legal advice through this page.