UK activewear retailer Sweaty Betty has been hacked to insert malicious code that attempts to steal a customer’s payment information when making purchases. Attack is called Magecart and involves a hacker compromising an online site in order to inject malicious code in checkout or other pages that ask for payment information. When a customer enters payment information on one of these hacked pages, the malicious script will send it to a remote server operated by the attacker. Customers shopping online between November 19th, 2019, at 6:24 PM (GMT) and November 27th,2019, may have had their credit card or debit card details stolen.
Source: https://www.bleepingcomputer.com/news/security/uk-retailer-sweaty-betty-hacked-to-steal-customer-payment-info/