Security experts discovered hosted on GitHub the skimmer scripts used by Magecart cybercrime gang to compromised Magento installations worldwide. The Magecart skimmer script was uploaded on April 20 and quickly removed by the platform after experts reported the discovery to the company. The list of victims of Magecart groups is long and includes several major platforms such as British Airways, Newegg, Ticketmaster, and Feedify. The gang tracked as Group 4 appears to be very sophisticated, in particular, the gang tracked is very sophisticated. At least 200 e-commerce sites (based on a @urlscanio search) have been injected with a skimmer.”]
Source: https://securityaffairs.co/wordpress/84564/cyber-crime/magecart-skimmer-github.html