Hefty collection of U.S. and international payment cards from the incident revealed in December found up for sale on dark-web marketplace Joker s Stash. The marketplaces is one of the largest and most notorious dark web marketplaces for buying stolen payment card data. Researchers from New York-based fraud intelligence company Gemini Advisory found Wawa, an East Coast-based convenience store and gas station, first discovered the breach on December 10, 2019. Wawa acknowledged that the company became aware of reports of criminal attempts to sell some customer payment card information from the December breach.
Source: https://threatpost.com/wawa-breach-30-million-customers/152328/