Hackers around the world, often teenagers, are making thousands by creating and selling games cheats to a growing market.
The most recent survey suggests that around a third of gamers admit to using them to improve their chances online.
Cyber-security reporter Joe Tidy went to play a game with a cheat hacker to find out how the 17-year-old makes thousands of dollars a month through his underground business.
Last week, in China, four alleged hackers were arrested for similar offences.
Cyber-security reporter: Joe Tidy
Video journalist: Harriet Bradshaw