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Mizuno USA, Inc. data breach investigation

Filed
January 30, 2025
Regulator
Maryland AG
People affected
Not stated
File status
Investigation Open

What the filing confirms

  • Mizuno USA, Inc. reported the incident to the Maryland Attorney General.

Still unknown

  • Which categories of personal information were taken. The filing does not list them.
  • How many people were affected. The filing does not give a number.
  • What caused the incident beyond the description in the filing.
  • How the attackers got in, and whether basic safeguards such as multi-factor sign-in were in place.

Investigation notes

Mizuno USA, Inc. is a prominent global retailer specializing in athletic equipment, apparel, and footwear. As a consumer-facing brand, the company typically collects and stores sensitive customer information, including full names, mailing addresses, email addresses, and payment card details processed through their e-commerce platforms. In 2025, the company officially reported a data security incident to the Maryland Attorney General, confirming that unauthorized access to their systems occurred. If you have received a formal data breach notification letter from Mizuno USA, it indicates that your personal information may have been compromised during this event. We are currently analyzing the scope of this incident to determine how it impacts the privacy and security of the affected individuals.

What our attorneys examine

A cyberattack does not excuse a company from protecting the information it holds. We look at whether Mizuno USA, Inc. used reasonable security, how long it kept the data, and how quickly it told the people affected. Those questions decide whether a class action or individual claim is possible. Read more on how ransomware lawsuits work, or browse other incident files in Maryland.

Mizuno USA, Inc. data breach questions

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 Maryland Attorney General on January 30, 2025. 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.
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.
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.
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.
Do I need a Mizuno USA, Inc. data breach lawyer or attorney?
An attorney can read your notice and tell you whether a claim makes sense. A case review here is free, and data breach cases are usually handled on contingency, so there is no upfront cost.
Can I sue Mizuno USA, Inc. over the data breach?
It depends on what was exposed, the law in Maryland 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.
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 open files in Maryland

Attorney advertising. An incident file reflects a public regulator filing and our review of it; 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.