POS compromises are increasingly common in the commercial sector but remain rare in the government sector. The POS is the location where money transfers from the buyer to the seller at a retail store. Compromises can include physical tampering with pinpads or cash registers, complicit employees, or computer viruses. The compromise may affect the cash register or the computer that processes the credit card payments, and may target debit cards and pin numbers or credit card information. When multiple victims share a single financial commonality, a POS compromise is the most likely culprit. For more information, see http://www.darkreading.com/attacks-breaches/point-of-sale-system-attack-campaign-hits-more-than-40-retailers/d/d-id/1141247? .
