It’s not an actual crime, but If it’s an online multiplayer game it is a violation of the terms of service. Add to that it tends to ruin other people’s enjoyment of the service, thus negating the main purpose of the service. I think people who cheat in online games are pretty sad, pathetic, and selfish.
Yeah, even in single player today. Can't let the idea having fun in a game or having control over a game spoil the statistics of "achievements" for the Achiever players anymore. (Sigh.)