Under Armour data breach claims trigger alerts for millions of users

Sportswear and fitness brand Under Armour is investigating claims of a massive data breach after customer records were posted on a hacker forum. 

The breach became widely known after millions of people received alerts warning their information may have been compromised. While Under Armour says its investigation is ongoing, cybersecurity researchers reviewing the leaked data say it appears to include personal details potentially linked to customer purchases.

According to breach notification service Have I Been Pwned...