| CPC G06Q 20/4016 (2013.01) [G06Q 20/1085 (2013.01); G07F 19/203 (2013.01); G07F 19/207 (2013.01)] | 20 Claims |

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19. A system comprising:
a self-service terminal (SST) including a user interface for receiving transaction instructions from users and a transaction execution unit for carrying out the transaction instructions;
a control unit housed within the SST and comprising a processor and a memory, the memory storing instructions that, when executed by the processor, cause the control unit to:
record transaction instructions and corresponding transaction outcomes to form a transaction record;
compare the transaction record to a set of predefined criteria indicative of transaction integrity;
assess transaction risk based on a comparison, wherein the transaction risk is indicative of potentially fraudulent activity; and
modify transaction execution parameters of the transaction execution unit based on the assessed transaction risk to mitigate potentially fraudulent activity;
wherein modifying the transaction execution parameters includes placing a dispenser of the SST in a suspend mode to prevent execution of dispense commands.
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