According to Adidas, their preliminary investigation revealed that the hackers likely got usernames, passwords and contact information.
"We have started alerting certain consumers who purchased on Adidas' U.S. website about a potential data security incident".
Adidas AG is the latest company to come under attack from cyber-thieves looking to steal personal information, with millions of customers potentially at risk.
News of the possible data breach at Adidas comes only months after sportswear giant Under Armour reported a breach which exposed 150 million customer usernames, email addresses and encrypted passwords.More news: U.S. lawmakers reject Donald Trump-backed immigration bill
The breach affects select customers who placed orders on the brand's US website. "Adidas has no reason to believe that any credit card or fitness information of those consumers was impacted".
Data breaches are occurring more and more often these days and it's apparent the companies that collect our data aren't too interested in keeping it safe.
As Bloomberg reports, Adidas discovered "an unauthorized party" had gained access to its servers and stolen data on June 26.
The statement didn't say how many customers might be affected, but an Adidas spokeswoman told the Los Angeles Times that the number might be "a few million". As such, it is alerting these customers about the loss of their information. United States consumers are also being notified of the issue by email. "Adidas is working with leading data security firms and law enforcement authorities to investigate the issue".