The solution to your problem is smart and secure channels to transmit data from the poles of the system to the processor.
In addition to that, you need secure data storage facilities with encryption enabled. This would add more layers of the security to the data that is generated by the poles.
All of these features are provided in MS Dynamics 365.
In addition, if you feel that the you still have a doubt, you can relay that in detail on the fraud protection sub forum.
I hope this helps.
Regards.