I received a data breach letter from California Casualty — what should I do?

Follow the instructions in the letter, enroll in the free credit-monitoring service, monitor your accounts, and consider speaking with a data-breach attorney about your rights.

How do I submit a claim related to the California Casualty data breach?

You may contact the dedicated toll-free call center listed in your notification letter and consult an attorney to evaluate potential compensation claims.

Am I eligible to join a lawsuit against California Casualty?

Eligibility depends on factors such as the type of information exposed and resulting damages. Request a free legal review to find out.

What information did the California Casualty breach expose?

Names plus one or more of Social Security number, date of birth, driver’s license or state ID, tax ID, and financial account number.

Did California Casualty offer credit monitoring, and for how long?

Yes. Impacted individuals are entitled to 24 months of complimentary credit-monitoring services.

How many people were affected by the California Casualty breach?

The company reported that approximately two Maine residents were affected. Counts for other states have not yet been disclosed.

How can I get the official breach notice (PDF) for California Casualty?

You can download it directly from the Maine Attorney General’s website using the button in this article.

California Casualty Data Breach: SSNs Exposed

By Join The Case · Published November 20, 2025 · Updated November 20, 2025 · 6 min read

File Your Claim Now

Dapeer Law, P.A., a top-rated class action law firm, is investigating the California Casualty data breach. If you received notice that your information was exposed during this breach, you may be entitled to compensation. It's free to join our investigation to see if we can help you recover.

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On November 19, 2025, California Casualty began notifying individuals that their personal information was copied during a week-long network intrusion. If you received a letter, you may be entitled to free identity protection and legal recourse—request a no-cost case evaluation today.

What Happened?

California Casualty Indemnity Exchange, California Casualty Insurance Company, California Casualty & Fire Insurance Company, and California Casualty General Insurance Company of Oregon (collectively, “California Casualty”) detected suspicious activity on their information-technology network. An internal investigation supported by a third-party cybersecurity firm confirmed that an unauthorized party accessed the network between September 2 and September 8, 2025 and copied certain files.

When Was the Breach Discovered?

Breach period: September 2–8, 2025
Discovery of impacted data: November 5, 2025
Consumer notice mailed: November 19, 2025

Whose Information Was Affected?

The company confirmed that files containing personal data for approximately two Maine residents were involved. California Casualty has not yet reported impact totals for other states.

Data Elements Exposed

The information varied by individual and may have included:

Names
Social Security numbers
Dates of birth
Driver’s license or state ID numbers
Tax identification numbers
Financial account numbers

Company Response

Immediately after detecting the incident, California Casualty:

Isolated certain systems and launched incident-response protocols
Engaged a third-party cybersecurity firm to investigate
Reported the matter to law-enforcement authorities
Implemented additional safeguards and technical security measures
Provided 24 months of complimentary credit-monitoring services to impacted individuals
Established a dedicated toll-free call center for questions

Download Official Breach Notice (PDF)

Your Options & Next Steps

Recipients of a California Casualty data breach letter should act quickly to protect their identity and preserve potential legal claims.

Enroll in the free credit-monitoring and identity-protection services offered in the notice.
Monitor financial accounts, credit reports, and tax filings for unusual activity.
Place a fraud alert or security freeze with the major credit bureaus if you suspect misuse.
Consult with a data-breach attorney to learn whether you qualify for compensation.

Company Overview

California Casualty is a niche insurance carrier serving educators, law enforcement, firefighters, and nurses nationwide.

Website: calcas.com
Contact: Customer Support
Headquarters: 1875 South Grant Street, Suite 800, San Mateo, California, USA
Founded: 1914
Industry: Insurance
Employees: 359
Parent Entity: California Casualty Management Company
Social: Facebook · X · YouTube · Instagram · LinkedIn

Frequently Asked Questions

I received a data breach letter from California Casualty — what should I do?: Follow the instructions in the letter, enroll in the free credit-monitoring service, monitor your accounts, and consider speaking with a data-breach attorney about your rights.
How do I submit a claim related to the California Casualty data breach?: You may contact the dedicated toll-free call center listed in your notification letter and consult an attorney to evaluate potential compensation claims.
Am I eligible to join a lawsuit against California Casualty?: Eligibility depends on factors such as the type of information exposed and resulting damages. Request a free legal review to find out.
What information did the California Casualty breach expose?: Names plus one or more of Social Security number, date of birth, driver’s license or state ID, tax ID, and financial account number.
Did California Casualty offer credit monitoring, and for how long?: Yes. Impacted individuals are entitled to 24 months of complimentary credit-monitoring services.
How many people were affected by the California Casualty breach?: The company reported that approximately two Maine residents were affected. Counts for other states have not yet been disclosed.
How can I get the official breach notice (PDF) for California Casualty?: You can download it directly from the Maine Attorney General’s website using the button above or this link.

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