Digital Resilience Pays Off
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Point Of Sale systems are usually facing customer and operated by non technical retail customer service or cashiers. These systems can be difficult to reach and service, they also need to be always up, some of them on leased hardware/software, rarely upgraded or patched and easily accessible by operators. These systems are also usually serviced remotely in part because of their large numbers, and distance in between many of large or small retail locations.
The above conditions can pretty much explain why it is so difficult to protect these systems and its data. The relationship between cost benefit, operability, availability and user training, forces owners to do the best they can and harden their systems without losing revenue or spending too much in training of personnel with high turnover. It also forces them to rely on third party management in many cases.
The process of a retail transaction using a POS system also involves many participants as well including but not limited to, cardholder, merchant, software vendor, hardware manufacturer, gateway processor, acquirer, card brand, and issuer. The merchant is the most vulnerable part of this equation because it is facing the public directly in multiple locations and at multiple POS*.
On the second part of this blog series we will delve into the relationship of the above chain of elements with a multi contextual and evolving threat landscape.
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