September 1993. Before then, the internet was primarily a university thing, and in university settings, fall semester starts in September, so you had a whole freshman class getting their first networked computer access and often doing rude things with it, especially in the eyes of the Sys Admins who had to deal with it. The problem was, in 1993, you started having the WorldWideWeb, and thus there would always be an influx of new users who continue to behave in ways Sys Admins consider rude. And that influx never stopped. — TheSeptemberThatNeverEnded