Title update in the next month to address cheating.
July 21, 2010
"We'd just like to let all fans and players of Red Dead Redemption Multiplayer know that we're aware a few rotten apples persist in the online world, trying to make the experience unpleasant for everyone else," the publisher said.
"Obviously, these Multiplayer modes can be great fun when everyone is on the up-and-up, so to ensure we preserve the integrity of gameplay for all online, we are actively working on new features to counter against the isolated incidents of abuse that go on."
If you're caught cheating or hacking "beyond a shadow of doubt" you will be banned from Red Dead's online world for a period of Rockstar's discretion.