Point of Sale (POS) systems consist of the hardware and software used in processing a retail purchase of goods or services. The information stored on the magnetic stripe of the card is collected and processed by the attached computer or device for the purchase. The data stored on the magnetic stripe is what is referred to as Track 1 and Track 2 data. Track 1 data is the information associated with the account number and cardholder’s name and Track 2 data contains information such as the credit card number and expiration date.
Dexter
Dexter POS mainly targets credit and debit card data. It steals Track 1 / Track 2 magnetic card data through memory scraping or parsing of some specific processes. It then relays this information back to the command and control (C&C) systems for the malware.
more here..........http://h30499.www3.hp.com/t5/HP-Security-Research-Blog/POS-malware-a-look-at-Dexter-and-Decebal/ba-p/6654398#.VEmr6vnF-Sp
Dexter
Dexter POS mainly targets credit and debit card data. It steals Track 1 / Track 2 magnetic card data through memory scraping or parsing of some specific processes. It then relays this information back to the command and control (C&C) systems for the malware.
more here..........http://h30499.www3.hp.com/t5/HP-Security-Research-Blog/POS-malware-a-look-at-Dexter-and-Decebal/ba-p/6654398#.VEmr6vnF-Sp