A data breach incident impacting Discover cards has potentially provided attackers with access to an undisclosed amount of customer information. This is only the second time a data breach involving customers’ cards has been reported during 2018 by Discover Financial Services to the California Attorney General. Discover chose to issue new cards for all customers that might have had their card information swiped in the attack. Discover issued a statement by replying to our tweet: “We can confirm this incident did not involve any Discover systems and we are forwarding this to the appropriate parties for review”””
Source: https://www.bleepingcomputer.com/news/security/discover-card-users-affected-by-data-breach-new-credit-cards-issued/