[Danieru]

Remembering my chats with loss prevention at Walmart while I worked there: by volume customers are the worst overall, but employee theft are the worst per person. Thus catching one employee thief represents several thousand in losses. Meanwhile customer theft is dealt with in a more bulk-like fashion.

Left unchecked employee theft can scale. Think of a cashier skimming cash, or customer service person colluding with a friend to return junk. Both customer and employee theft require stoppage, but employees are tough because they are trusted by default.