Two-Month Cyber Breach at Mizuno USA Under Investigation

Unauthorized access to Mizuno USA’s network has resulted in a compromise of sensitive customer information, which has caused Mizuno USA to notify its customers about the breach. In a letter to affected individuals, the sports gear manufacturer shared information regarding the breach with the Maine Office of the Attorney General, including details about it. 

There was suspicious activity detected on the company’s systems on November 6, 2024, which prompted an immediate investigation. The investigation concluded that an unknown threat actor gained access to certain network systems, as well as exfiltrating files without authorization, for an extended period from August 21 to October 29, 2024. 

As one of the leading sporting goods manufacturers worldwide, Mizuno USA, one of the subsidiary companies of Mizuno Corporation, has confirmed an instance of unauthorized access to sensitive files by unauthorized persons between August and October 2024, resulting in the theft of those sensitive files.

Mizuno USA is a North American company with headquarters in Peachtree Corners, Georgia, specializing in the manufacture and distribution of sports equipment, apparel, and footwear across a wide range of sports disciplines, such as golf, baseball, volleyball, and tennis. 

The company announced in its filing to the Maine Office of the Attorney General on Thurs

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