Nike is investigating a potential data breach after a cyber attack group claimed to have leaked data related to its business operations. The group, World Leaks, said it published 1.4 terabytes of data from Nike, but Reuters could not verify the claim. Nike has not commented on specifics or whether any ransom was paid.

The sportswear giant, facing market share losses, is trying to re-establish itself as the top brand. Nike’s shares were flat on Monday as news of the breach broke. It’s unclear if the breach affected data at wholesale partners like Dick’s, Macy’s, and JD Sports, who have not yet commented on the situation.

Data breaches have cost companies big money in recent years. MGM Resorts, Clorox, and UnitedHealth Group all suffered major attacks in 2023 and 2024. MGM lost at least $100 million, while Clorox saw a drop of over $350 million in quarterly net sales. The impact of the breach on Nike’s business remains to be seen.

Read more at Yahoo Finance: Nike says it is investigating possible data breach