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Mizuno USA Inc data breach

Incident readout

Company
Mizuno USA Inc
Reported to
Indiana Attorney General
Filed
March 11, 2026
People affected
Not stated in the filing
Incident type in filing
Not stated
Our review
Investigation Open

Was this a ransomware attack?

The filing does not say ransomware was involved. We do not label an incident ransomware unless the company’s report says so. Whatever the cause, the steps to protect yourself and the legal question are the same.

What we know

Mizuno USA Inc is a prominent global retailer and manufacturer specializing in athletic equipment, apparel, and footwear. As a consumer-facing retail entity, the company typically collects and maintains sensitive customer information, including full names, mailing addresses, email addresses, and payment card details processed through their e-commerce platforms. In 2026, the company officially reported a data security incident to the Indiana Attorney General, confirming that unauthorized access to their systems occurred. If you have received a formal data breach notification letter from Mizuno USA Inc, it indicates that your personal information was likely stored within the affected environment. This notice is intended to inform you of the incident and provide guidance on the steps you should take to protect your identity and financial security.

See every breach reported in Indiana or read what to do after a ransomware attack.

After the Mizuno USA Inc incident: what to do and your options

What should I do after getting the Mizuno USA Inc data breach notice?
Keep the letter and the envelope, and note the date it arrived. Freeze your credit with Equifax, Experian and TransUnion, change any passwords the notice mentions, and sign up for any free credit monitoring the letter offers. Then check whether you may have a claim.
Did Mizuno USA Inc offer free credit monitoring?
Any free monitoring Mizuno USA Inc is offering will be described in the notice you received, along with an activation code and a sign-up deadline. Enrolling does not give up your right to bring a claim.
Can I sue Mizuno USA Inc over the data breach?
It depends on what was exposed, the law in Indiana and your own state, and whether you've been harmed. Most people take part through a class action rather than suing alone. Keep your notification letter — it's the proof that connects you to the breach.
Do I need a Mizuno USA Inc data breach lawyer or attorney?
Whether the company's systems were encrypted by ransomware or data was simply taken, the legal question is the same: did it protect your information the way the law requires? An attorney can review your notice for free, and these cases are usually handled on contingency.
Is there a Mizuno USA Inc data breach class action lawsuit?
Law firms often open an investigation after a breach notice like this one, and a class action lawsuit may follow. This page doesn't confirm that a lawsuit has been filed against Mizuno USA Inc. You usually don't have to join a class action to be included — if a settlement is reached, class members are notified and can file a claim.
Is the Mizuno USA Inc data breach letter legit or a scam?
A notice from Mizuno USA Inc in the mail matches the breach Mizuno USA Inc reported to the Indiana Attorney General on March 11, 2026. Check that the company name and dates in your letter match that filing. A real notice of data security incident won't ask for your password, Social Security number or a payment — if it does, contact Mizuno USA Inc through a phone number or website you find yourself.
How much could a Mizuno USA Inc data breach settlement or claim be worth?
There is no set amount, and no Mizuno USA Inc settlement is confirmed here. In past data breach settlements, payments depended on what data was exposed and on documented losses — fraud, out-of-pocket costs and time spent dealing with the breach. Keep receipts and records; they're what damages claims are built on.

Other breaches reported in Indiana

Attorney advertising. This page reflects a public regulator filing; it does not mean a lawsuit has been filed or that the company did anything unlawful. Submitting a review request does not create an attorney-client relationship.