Ron Harris: The Gaming Control Agent Who Rigged Keno Machines

Ron Harris had a problem. He was a gambling addict. Not a casual player. An addict. He owed money. The debt was growing.

Harris also had access. He worked for the Nevada Gaming Control Board as a computer security officer. He had clearance to access gaming systems. He knew how machines worked. He knew how to exploit them.

In December 1994, Harris decided to exploit his access. He modified the software of a keno game at the Primm Valley Casino (about 40 miles south of Las Vegas). He installed a back-door program that let him manipulate the outcome.

The keno machines were linked to a network. Harris had remote access. He could trigger winning hands from anywhere.

How the Rigging Worked

Keno is a game where players pick numbers (1-80) and the machine draws 20 numbers. If your picks match, you win. The payout depends on how many matches and how much you wagered.

Harris modified the drawing algorithm. He added code that checked for a specific sequence of bets. If those bets matched his signature, the machine would favor those bets.

Most accurately: Harris could make winning draws happen at will. He'd signal the machines (through his computer), and they'd generate winning hands for him or his associates.

The system was sophisticated for 1995 technology. It exploited the fact that gaming authorities trusted their own employees not to cheat.

The Scope of Theft

Over several months, Harris rigged the keno machines and collected winnings. The total: approximately 12 million dollars.

Harris thought he was safe. The Gaming Control Board wouldn't suspect him. The machines were secure from outside threat, so investigation would assume the machines were working correctly.

He was wrong on both counts.

How He Got Caught

Greed caught him. Harris wanted more. He encouraged associates to play bigger games, bigger bets, to collect bigger winnings. The larger wins created suspicious patterns.

Machine analysis showed that keno wins at Primm were wildly higher than expected. Specifically, wins matching Harris's signature patterns were statistically impossible.

Auditors investigated. They traced the pattern to Harris's network access and his bets. The conclusion: Harris had modified the machines.

The Prosecution

Harris was arrested in May 1995. He was charged with computer fraud and theft. The trial was straightforward: the machines showed he'd modified them, and the bets showed he'd profited.

Harris was convicted in 1997 and sentenced to seven years in federal prison.

What It Revealed

The Harris case showed that gaming security systems were vulnerable to insider threats. The Gaming Control Board employed the person who rigged the machines. They trusted him completely.

After the Harris conviction, Nevada (and other states) implemented stronger oversight. Gaming systems now have multiple layers of authentication. No single employee can access critical systems alone. Audit trails are reviewed constantly.

The case also revealed that gambling addiction can make intelligent people do stupid things. Harris earned a good salary. He had a secure job. But his addiction to gambling drove him to risk everything.

The Honest Take

Ron Harris was not unique in his dishonesty. He was unique in his access. Casinos and gaming systems everywhere have people trying to cheat. Most lack the technical knowledge or access.

Harris had both. For a few months, he got away with it. But systems designed well enough eventually catch cheaters. Harris's error was assuming he was smarter than the auditors.

He was wrong.