"Banhammer" nails down Halo 2 abusers and hackers; fourth auto-update available now and required for online play.
Master Chiefs have battled Elites, Brutes, and even the parasitic Flood, but none of these enemies have been as deadly as some of the foes encountered in Halo 2's online play. These opponents can seemingly jump over Covenant dropships in a single bound, pass flags through walls, and even become invisible.
These undefeatable foes aren't some new alien species that have invaded the ruckus created by Bungie. These are the work of hackers and modders, gamers who spend time improving their stats with cheats at the expense of others. As with any high-profile title, cheaters will run rampant in an effort to "pwn n00bs" (defeat newbies, for the non-l337 speakers) and generally frustrate those who play fairly.
News source: GameSpot