DataBreachInformation.com
Investigation OpenMassachusettsFiled March 7, 2026

Understanding your MGM Resorts International data breach notification letter

If a MGM Resorts International 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

MGM Resorts International has formally reported a security incident to the Massachusetts Attorney General's office. This filing alerts regulators and potentially affected individuals to an unauthorized compromise of the company's network and data systems. An investigation into the full scope and impact of the incident is currently underway.

What to do after the letter

  1. Confirm the notice is genuine

    A legitimate MGM Resorts International notice references the specific incident reported to the Massachusetts 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.

  2. 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.

  3. 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.

  4. Check the record against the public filing

    You can verify the MGM Resorts International incident against the filing reported to the Massachusetts Attorney General. This registry summarizes what was filed; it does not provide legal advice.

This page summarizes a data breach reported to the Massachusetts Attorney General for informational purposes. DataBreachInformation.com is a neutral reference registry and does not provide legal advice.