Blue Cross Blue Shield of Montana Data Breach Class Action Investigation

Chimicles Schwartz Kriner & Donaldson-Smith is investigating a potential class action relating to a data security incident involving Blue Cross Blue Shield of Montana and one of its business associates. The breach reportedly impacted approximately 462,000 individuals.

What Happened at Blue Cross Blue Shield of Montana?

According to recent reports, a business associate of Blue Cross Blue Shield of Montana experienced a data security incident involving unauthorized access that lasted for nearly three months, beginning on October 21, 2024. The prolonged unauthorized access to systems containing protected health information of Blue Cross Blue Shield of Montana members was disclosed in October 2025.

What Information Was Compromised?

The breach involved protected health information (PHI) belonging to approximately 462,000 Blue Cross Blue Shield of Montana members. Specific details regarding the types of personal and health information compromised are expected to be disclosed in forthcoming notifications to affected individuals.

Why Is This Important?

The exposure of protected health information places affected individuals at a significantly increased risk of identity theft, medical fraud, insurance fraud, and other related harms. Business associate breaches involving health insurers often involve particularly sensitive data including medical records, insurance policy information, Social Security numbers, and financial data. The compromised data can be exploited by criminals for years to come.

If you are a Blue Cross Blue Shield of Montana member and received a notification about this data breach, or believe your personal or health information was compromised, please contact one of our data breach attorneys by filling out the form below to learn more about your legal

BCBS Montanna (#562)

This is a questionnaire is created by the law firm of Chimicles Schwartz Kriner & Donaldson-Smith LLP (CSK&D) to investigate potential claims related to this data breach. Your answers will be screened, and you may be contacted if your responses match certain criteria.

When you submit this form, it will not automatically collect your details like name and email address unless you provide it yourself.

First Name

Last Name

Address

Address Line 1

City

State

Zip Code

Phone

Are you a current or former member of Blue Cross Blue Shield of Montana?

Did you receive a notice letter about the breach?

Have you gotten an increase in spam or junk calls, texts, and emails recently?

Have you experienced any fraud as a result?

If so, please provide more details:

Please provide any additional details about your experience:

(*) Indicates required field: When communicating with us through this site or otherwise in connection with a matter for which we do not already represent you, your communication may not be treated as privileged or confidential, and does not create an attorney-client relationship between you and our Firm.

Blue Cross Blue Shield of Montana Data Breach Class Action Investigation

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