Sergio Flores works at the drive-through window of Big & Bad Burgers. Occasionally, when a drive-through customer orders, Sergio fills the order and pockets the customer’s money. He does not ring up...

Sergio Flores works at the drive-through window of Big & Bad Burgers. Occasionally, when a drive-through customer orders, Sergio fills the order and pockets the customer’s money. He does not ring up the order on the cash register.

Identify the internal control weaknesses that exist at Big & Bad Burgers, and discuss what can be done to prevent this theft.