Via Schneier, the head of security for the marketing firm running the game stole the million-dollar game pieces:
[FBI Special Agent Richard] Dent’s investigation had started in 2000, when a mysterious informant called the FBI and claimed that McDonald’s games had been rigged by an insider known as “Uncle Jerry.” The person revealed that “winners” paid Uncle Jerry for stolen game pieces in various ways. The $1 million winners, for example, passed the first $50,000 installment to Uncle Jerry in cash. Sometimes Uncle Jerry would demand cash up front, requiring winners to mortgage their homes to come up with the money. According to the informant, members of one close-knit family in Jacksonville had claimed three $1 million prizes and a Dodge Viper.
When Dent alerted McDonald’s headquarters in Oak Brook, Illinois, executives were deeply concerned. The company’s top lawyers pledged to help the FBI, and faxed Dent a list of past winners. They explained that their game pieces were produced by a Los Angeles company, Simon Marketing, and printed by Dittler Brothers in Oakwood, Georgia, a firm trusted with printing U.S. mail stamps and lotto scratch-offs. The person in charge of the game pieces was Simon’s director of security, Jerry Jacobson.
Dent thought he had found his man. But after installing a wiretap on Jacobson’s phone, he realized that his tip had led to a super-sized conspiracy. Jacobson was the head of a sprawling network of mobsters, psychics, strip-club owners, convicts, drug traffickers, and even a family of Mormons, who had falsely claimed more than $24 million in cash and prizes.
The longish read is worth the time.