The scheme involved 7,000 $94 toothbrushes, according to law enforcement. "The scam works by intentionally sending a company more goods than it ordered and billing for it. On Amazon, every product is given a unique identifier, a string of numbers called an Amazon Standard Identification Number. They are part of an item's listing in Amazon's catalogue. Vendors have the ability to change listings, to make sure things like product descriptions are accurate." Louise Matsakis explores in WIRED magazine.