StockX, an online marketplace, experienced a data breach where an unknown third party gained unauthorized access to customer data from its cloud environment on or around May 14, 2019. The company discovered suspicious activity on July 26, 2019, and engaged forensic experts. Affected data included names, emails, addresses, usernames, hashed passwords, and purchase history. StockX implemented security updates, password resets, and credential rotations, and notified law enforcement. The company offered 12 months of free identity theft protection to affected individuals.