MCBS, LLC Data Breach (June 2026): What Was Exposed and What To Do

What to do now

Steps chosen from the information listed in the official filings. Your own letter may list more.

1. Enroll in the free credit monitoring

   MCBS, LLC offered free credit monitoring. Use the enrollment code printed in your letter. Never share that code with anyone who contacts you.

   Source: notice letter in the California Attorney General filing of Jun 26, 2026

2. Freeze your credit at all three bureaus

   A credit freeze stops new credit accounts being opened in your name. It is free by law and you can lift it when you need credit: Equifax, Experian and TransUnion.

3. Get an IRS Identity Protection PIN

   An IP PIN stops someone else filing a tax return with your Social Security number. Get one from the IRS at irs.gov.

4. Review your health insurance statements

   Check the Explanation of Benefits (EOB) statements from your insurer for visits, prescriptions or claims you do not recognize, and contact your insurer about anything unfamiliar.

5. Watch for phishing calls, texts and emails

   Scammers often contact people after a breach, pretending to be the organization, a bank or a government agency. Do not give your Social Security number, passwords or codes to anyone who contacts you first.

6. Check your credit reports

   You can get free credit reports from all three bureaus at AnnualCreditReport.com, the official site.

7. Report identity theft if you see signs of it

   The Federal Trade Commission's IdentityTheft.gov gives you a personal recovery plan.

Is the letter real?

The agency published an official copy of the notice. Compare your letter with it:

• Official copy of the notice letter (California Attorney General, filed Jun 26, 2026)

Letters usually list a phone number for questions. Before calling, check that it matches the number in the official copy linked above.

Never give your Social Security number, bank details or passwords to someone who contacts you first.

Timeline

1. Sep 22, 2025 Incident began (earliest date reported) source
2. Sep 25, 2025 Organization discovered the incident source
3. Sep 26, 2025 Incident ended (latest date reported) source
4. Jun 26, 2026 Reported to HHS and California AG source
5. Jun 30, 2026 Reported to Texas AG source

Sources

1. U.S. Department of Health and Human Services, Office for Civil Rights Breach report filed Jun 26, 2026
   Filed as “MCBS, LLC” · total 1,261,464
   The link opens the agency's list; search it for the organization name.
2. California Attorney General Notice filed Jun 26, 2026
   Filed as “MCBS, LLC” · Official copy of the letter
3. Texas Attorney General Notice filed Jun 30, 2026
   Filed as “MCBS LLC” · 13,302 Texas residents · total 1,241,154
   The link opens the agency's list; search it for the organization name.

Last updated Oct 20, 2026. Our summaries are written in our own words from the official filings above. Spotted an error? Report a correction.