There has been an explosion in POS malware in the last year. At Morphick, Jeremy Humble and I found 2 undiscovered families in 2014 and we just found our first new family of 2015. This new malware which we're calling LogPOS has several notable differences from recent POS malware.
more here........http://morphick.net/blog/2015/2/27/mailslot-pos
more here........http://morphick.net/blog/2015/2/27/mailslot-pos