GAMOA has been made aware of a scheme by which thieves are adding credits to your games through an external device known as an EMP. To prevent your machines and customers from being at risk, you need to make sure there is NO coin wire attached to the harness. Typically, the wire(s) are attached in pin 18 or 19. You can either cut the wire or use a pin extractor to push out of the edge connector.
This only affects games with the standard 36-pin edge connector.