Chat flows naturally at a certain speed and anything in excess of that (2x+) is likely a spam attack. Should pass global chat messages, if not ALL chat messages, through a throttle that prevents more than 5 messages per second or so.
Throttling should be done in a window of time, e.g. trigger throttle if 15 messages within 3 seconds, to account for instances of quick replies or whatever. Anything outside that is probably spam or is otherwise worth suggesting that the sender join a channel.
Chat flows naturally at a certain speed and anything in excess of that (2x+) is likely a spam attack. Should pass global chat messages, if not ALL chat messages, through a throttle that prevents more than 5 messages per second or so.
Throttling should be done in a window of time, e.g. trigger throttle if 15 messages within 3 seconds, to account for instances of quick replies or whatever. Anything outside that is probably spam or is otherwise worth suggesting that the sender join a channel.