Arby’s breach may have hit 355,000 credit cards Malware on cash registers allowed crooks to grab credit and debit card info Check out this story on USATODAY.com: http://usat.ly/2k8KbFv Arby’s fast food restaurants were hit with a data breach in December of 2016 and January of 2017 that may have compromised at least 355,000 credit and debit cards. SAN FRANCISCO – Malware on cash registers at Arby’s fast food restaurants may have resulted in the breach of more than 355,000 credit and debit cards.