Payment card data is highly sought after by cybercriminals, who have in recent years targeted very large organizations that handle card data. Target, Home Depot and many others have reported large data breaches over the years. Some payment processors were also hit. FireEye says it has discovered a type of malware designed to steal payment card data that can be very difficult to detect and remove.But even if an infection is detected, “re-installing the operating system after a compromise is no longer sufficient. System administrators should perform a complete physical wipe of any systems compromised with a bootkit and then reload the operating system,” it wrote. Hence you need to know where your data is, monitor it and protect it.