Some of the stores are affected when the encryption on those devices are not operational which open the gateway for hackers. Payment cards used on Forever 21s website, www.forever21.com, were not affected. Customers are advised to carefully monitor their payment card details for unauthorized transactions and if anything suspicious notify the bank that issued the card immediately. Payment card details stored as plain text in logs in the logs of the payment card transactions that are authorized. The incident reported on November 14, 2017, Forever says.”]
Source: https://gbhackers.com/forever-21-confirms-payment-card-details/