I haven't taken a look at the code, but the HC/Owner of the MUD I'm coding on modified socketing a little bit, and one of the things he did was check to see if two people are logged in from the same IP. If they are, it flags. Since we have limited multiplay, it isn't a problem. As for the spamming, we have an emote checker piece of code. It saves your last 20 emotes and if you repeat, it flags. Same with excessive color coding, etc. But checking for multiplay is iffy. If you have shell access anywhere that's an extra IP/host. There are tests that humans can run, but they have to be evaluated by humans.
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