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Incident · State breach notice (California AG)

Episource data breach: Molina members' health data, and why some letters arrived in 2026

Compiled from public records. Updated 2026-11-13. By the cisonews.net Desk.

The Episource data breach affected 6,725,572 people, according to the federal health breach portal, where Episource, LLC reported a hacking or IT incident as a business associate on June 6, 2025. Episource, a company that works for doctors, health plans and other health businesses, says a criminal was able to see and copy data in its computer systems between January 27 and February 6, 2025. The federal health breach list counts 6,725,572 people, the third largest 2025 report among the open cases on that list, after Conduent's and Aflac's. Letters were still going out in February 2026, when Molina Healthcare found addresses for members who had only been told online.

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Why did I get an Episource letter in 2026?

Episource names Molina Healthcare and its affiliates, including Central Health Plan, among its customers. People Episource had no address for were first told through a substitute notice posted online. Molina later found their addresses, a process finished on February 3, 2026, and asked Episource to send individual letters. So the 2026 letters about a 2025 breach went to Molina members whose addresses had been missing. The guide to letters from companies you never dealt with explains how vendor breaches reach health plan members.

What happened at Episource?

Episource says it found unusual activity in its computer systems on February 6, 2025. It stopped the activity, began investigating with outside help, called law enforcement and turned off its computer systems. It began telling its customers what data was involved on April 23, 2025.

DateWhat the letter and the regulators' records say
January 27, 2025Access and copying begin
February 6, 2025Episource finds the activity, stops it and shuts down its systems
April 23, 2025Episource begins telling customers what data was involved
June 6, 2025Report submitted to HHS: 6,725,572 people, as a business associate
October 15 and November 12, 2025Notices recorded by California
February 3, 2026Molina finishes finding addresses for members told only online
February 9, 2026Supplemental letters; recorded by California
February 11, 2026Posted on the Texas attorney general's list: 351,562 Texans
May 9, 2026Extended deadline to sign up for the free service

What information was involved?

The data was not the same for everyone. It includes contact details (name, address, phone number and email) and one or more of:

GroupExamples in the letter
Health insurance dataPlans and policies, insurance companies, member and group ID numbers, Medicaid, Medicare and government payor ID numbers
Health dataMedical record numbers, doctors, diagnoses, medicines, test results, images, care and treatment
Other personal dataDate of birth

The Texas record also lists Social Security numbers, which the letter's list does not mention. Episource says it is not aware of any misuse of the data.

How many people were affected?

RegulatorWhat it countsNumber
HHS Office for Civil RightsIndividuals affected (June 2025 report)6,725,572
Texas attorney generalTexans (February 2026 posting)351,562

The Texas figure ranks 12th on the Texas attorney general's 2026 list.

What is Episource offering?

Two years of free credit monitoring and identity theft protection, which the 2026 letters say can be signed up for until May 9, 2026.

ItemDetail from the letter
LengthTwo years
Enrollmentapp.idx.us/account-creation/protect, with the code on the letter
Deadline (2026 letters)May 9, 2026
Phone(877) 786-0549, Monday to Friday, 8 a.m. to 8 p.m. CT, except holidays

The letter's reference guide suggests checking statements from health care providers, insurers and banks for activity that is not yours.

What Washington's attorney general recorded

Washington's attorney general lists a report from Episource, LLC (Community Health Plan of Washington, Humana, Molina Healthcare, Regence), received on June 6, 2025, with 102,913 Washington residents affected and a breach date of January 27, 2025. For those residents the record lists names, dates of birth, health insurance policy or ID numbers and medical information as compromised.

What the documents leave open

  • How the criminal got into Episource's systems.
  • Which customers besides Molina had data involved.
  • Why the Texas record lists Social Security numbers.

For more on how health vendors' breaches reach patients, see the HHS ranking of 2026 healthcare breaches and the HIPAA breach notification rule.

How this disclosure's timing compares

Episource disclosed 368 days after the discovery date its notice gives. Across the 206 other state breach notices on cisonews.net that date discovery to the day, the median gap is 100 days.

California's breach-notice rule

California's breach law (Civil Code § 1798.82 for businesses, § 1798.29 for state agencies) requires any person or business that must notify more than 500 California residents of a single breach to submit one sample copy of that notice to the Attorney General electronically. The California Attorney General's breach list, where this notice was found, is built from those submissions. Source: California Department of Justice, Office of the Attorney General, Data Security Breach Reporting. The guide Data breach laws by state: notice deadlines and attorney general thresholds in 23 states reads the rule in full, and the glossary defines Breach notification law.

Other health care incidents on cisonews.net

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Sources

  1. 2026-02-09 · AEpisource, LLC, supplemental notice of data breach (Molina members) filed with the California Attorney General, published February 9, 2026
  2. 2026-11-07 · ACalifornia Attorney General, list of submitted data security breach notices (search: Episource), published November 7, 2026
  3. 2026-11-07 · AU.S. Department of Health and Human Services, Office for Civil Rights, breach portal (breaches affecting 500 or more individuals), published November 7, 2026
  4. 2026-11-07 · ATexas Attorney General, data security breach reports, published November 7, 2026
  5. 2026-11-09 · AWashington Attorney General, data breach notifications, published November 9, 2026
  6. undated · ACalifornia Department of Justice, Office of the Attorney General, Data Security Breach Reporting

Tier A: the organization itself (including notices it filed with a state attorney general), a regulator or SEC EDGAR. Tier B: established press. Each fact on this page carries its supporting passage in the page source.

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