How many of us have a policy about fraud, outlining prevention and discussing detection?
Here's an example of a policy statement that prevents or at least seems to prevent fraud:
"Accepting or seeking anything of material value from contractors, vendors, or persons providing services/materials to the Company. Exception: Gifts less than $50 in value."
Detection by others (besides self reporting) would be built into a whistleblower policy.
Do you have something like this?