According to a post over on Rockstar Games' site, the next title update to Red Dead Redemption will bring with it "measures to counter hacking and cheating" on both the Xbox 360 and PlayStation 3.
Furthermore, a handful of "anti-grief" features will be added to the game's Free Roam online mode. Apparently, cowpokes enduring repeated harassment from other online players will be given the choice to jump to another point (of their choosing) on the map. The culprits doing all the griefing will get branded as such after six consecutive kills, earning them a Most Wanted status and wrangling the game's NPCs against the offender.
Rockstar also promises to continue monitoring online play for those doing bad deeds after said title update goes live "within the next month."