Simple answer: Yes, there are cheats out for GR.
I've been to and researched some cheat sites, and they do include the "aimbot" and "wallhack" type cheats, among others. Some sites are run by what I call "anarchists," offering cheats for free and intentionally ruining games for the public. Others are more "profiteer" in nature, run by those who are looking to make a buck, customizing the cheats for you for a fee.
Cheaters die!
[edit] but yeah, stay out of UBI... not just to avoid the hacked games, but also because the general immaturity present will lower your IQ