Magecart (pronounced like “age-cart,” but with an “m” at the beginning) is a method used to attack the payment systems of online vendors. Magecart attacks have resulted in the theft of more credit card information than the high-profile breaches at Home Depot and Target. It has hit the likes of Ticketmaster, British Airways, My Pillow, and Newegg in the last year alone. There is almost no way for a consumer to determine that Magecart skimming is about to take place.”]
Source: https://www.darkreading.com/cloud/getting-up-to-speed-on-magecart